
Introduction
Thiamine deficiency may be rare in developed countries, but it can still cause health problems if you don’t eat enough. It’s important to know the recommended daily amounts of this essential nutrient, as explained by the National Institutes of Health. This helpful guide shares important information about vitamin B1, how it affects your body, how much you need each day, and the possible issues that can arise from not getting enough.
Understanding Vitamin B1 (Thiamin)
Vitamin B1, or thiamin, is very important for a healthy nervous system and good heart function. If you don’t get enough thiamin, you can develop serious problems like beriberi, which affects muscle weakness and glucose metabolism. To stop this deficiency, you should eat enough vitamin B1 from different food sources like whole grains, brown rice, and fortified cereals. Knowing how vital vitamin B1 is for your diet can help you stay healthy and avoid issues linked to its deficiency.
The Essential Role of Vitamin B1 in the Body
Vitamin B1 has a key role in how our bodies use energy. It helps change carbohydrates into glucose, which is the main energy source for our body. This change leads to the making of ATP, the energy currency for our cells.
Thiamine is also very important for the nervous system. It helps create and maintain myelin, which is a protective layer around nerve fibers. This ensures that nerve signals move quickly and effectively.
This important B vitamin is also needed to process branched-chain amino acids. These amino acids are vital for muscle growth and repair. Having enough thiamine is necessary for good muscle function and to keep muscle fatigue away.
How Vitamin B1 Impacts Energy Metabolism
Thiamine helps our body make energy mainly through its active form, thiamine pyrophosphate (TPP). TPP is important because it works as a helper for important enzymes involved in glucose metabolism, which is how we break down glucose to make energy.
One key enzyme called pyruvate dehydrogenase needs TPP to work properly. This enzyme changes pyruvate, which we get from glycolysis, into acetyl-CoA. Acetyl-CoA then goes into the citric acid cycle, also known as the Krebs cycle. This cycle is crucial for producing energy in our cells.
In short, thiamine acts like a helper, making sure these processes run smoothly. If we don’t get enough thiamine, our ability to break down glucose and make energy decreases. This can lead to lower energy levels and possible health problems.
Health Benefits of Vitamin B1

Thiamine is mostly known for its role in energy production and helping the nervous system. However, it has many other benefits for our health. For instance, it helps keep the heart healthy and supports how our brain works.
Getting enough thiamine brings a lot of good effects. It plays an important part in different metabolic processes. Because of this, thiamine affects our well-being in many ways. Let’s look at the specific health benefits of this important nutrient.
Supports energy metabolism and ATP production
As we talked about before, thiamine helps with energy metabolism. It plays an important role in turning food into energy that the body can use. This process helps make ATP, which is the energy that powers every cell in the human body.
The body mainly uses glucose for energy. Thiamine is crucial for turning this glucose into ATP. The enzyme called pyruvate dehydrogenase needs thiamine pyrophosphate (TPP) to help with this process.
Without enough thiamine, glucose metabolism does not work well, and ATP production drops. This can lead to signs like fatigue, muscle weakness, and problems with thinking.
Essential for nerve function and brain health
Thiamine is important not only for energy production but also for keeping the nervous system healthy. Nerve cells need a constant amount of glucose for energy, and thiamine helps with this. It also helps create and maintain myelin, which is the protective layer around nerve fibers.
Myelin works like insulation for the nerves. It helps transmit nerve signals quickly and effectively. If myelin is damaged, which can happen with thiamine deficiency, it can lead to problems in how nerves communicate. This may result in various neurological issues.
When thiamine deficiency gets severe, it can cause brain damage and serious nerve problems that can’t be reversed. Wernicke-Korsakoff syndrome is a severe brain issue linked to long-term alcohol abuse. It is often caused by a lack of thiamine and can lead to confusion, memory loss, and even coma.
Helps prevent Beriberi (a severe deficiency disease)
Beriberi is a serious disease caused by a lack of Vitamin B1. This important nutrient helps keep your nervous system and heart healthy. If you do not get enough Vitamin B1, you could develop beriberi. Common signs include muscle weakness, nerve damage, and even heart failure. To protect yourself from this disease, make sure you have enough Vitamin B1 in your diet or through supplements. Eating food sources that are high in Vitamin B1 is a good way to prevent beriberi and keep your overall health in check.
Role in heart health and muscle function
Thiamine is important for heart health because it helps produce energy. The heart muscles need a steady flow of energy to keep pumping blood properly.
If someone has a thiamine deficiency, it can harm heart function. This may lead to congestive heart failure, where the heart finds it hard to pump blood. This happens because the heart muscle weakens and cannot keep its regular rhythm.
One sign of thiamine deficiency is muscle weakness, showing how vital this vitamin is for muscle function. Muscles depend much on glucose metabolism for energy. When thiamine is low, it can make it hard for muscles to contract and relax well.
Potential cognitive and neurological benefits
Emerging research suggests that thiamine may help with cognitive health and could lower the risk of neurodegenerative diseases like Alzheimer’s disease. While more studies are needed, early results point to possible benefits for thinking skills.
Research shows that older adults with mild cognitive problems often have lower thiamine levels. Taking thiamine may improve cognitive function in these people.
It’s important to understand that taking thiamine alone may not cure Alzheimer’s disease or other types of dementia. Still, getting enough thiamine from food and supplements may help maintain brain health as we age.
Daily Requirements and Dietary Recommendations
Knowing how much thiamine you should take each day is important. This helps make sure your body gets enough of this key nutrient. The amount of thiamine needed can change based on age, sex, whether you are pregnant, and if you are breastfeeding.
The next part lists the daily recommendations for vitamin B1. This guide will help you add this important nutrient to your diet.
Determining Your Vitamin B1 Needs
Dietary reference intakes (DRIs) for essential nutrients, like thiamine, are set up to help you get enough and avoid deficiencies. These suggestions change based on your age, sex, and life stage. Checking your thiamin status and talking to a healthcare professional can help you see if you are getting what you need.
The daily value (DV) for thiamine is shown on food labels. It gives a general idea of the amount in one serving. But, your personal needs may differ from this standard because of your diet and health. Things like pregnancy, breastfeeding, and some health issues can raise your need for thiamine.
Keeping an eye on your diet and eating foods high in thiamine can help you get enough. If you think you might have a deficiency or have special dietary concerns, it’s a good idea to speak with a healthcare professional for tailored advice.
Recommended Daily Allowance (RDA) for Various Age Groups
For adults, the recommended dietary allowance (RDA) for Vitamin B1 (Thiamin) is about 1.2 mg per day for men and 1.1 mg for women. Children usually need between 0.5 and 1 mg daily, based on their age. Pregnant and breastfeeding women need a bit more, about 1.4 mg per day. These RDA values are important for good health, especially for heart function and nerve health. It is important to eat foods that are rich in Vitamin B1 to meet these levels and support what your body needs.
Identifying Vitamin B1 Deficiency

It is important to know the signs and symptoms of vitamin B1 deficiency. This can help in taking action early and avoiding serious problems later. Even though this deficiency is uncommon in developed countries, some things can raise the risk. These include poor eating habits, chronic alcohol use, and issues with nutrient absorption.
If you notice any warning signs, it is key to get medical help quickly. This can help reduce the long-term health issues that come from low thiamine levels.
Common Symptoms and Warning Signs
The signs of vitamin B1 deficiency, also known as thiamine deficiency, can be very mild at first. They often look like signs of other health problems, making it hard to notice them. Many people might ignore these early signs. However, as the deficiency gets worse, the symptoms become clearer and can show a serious health issue.
A key sign is peripheral neuropathy, which means feeling tingling, numbness, or pain in the hands and feet. This happens because of nerve damage from not getting enough thiamine. You might also notice muscle weakness, feeling very tired, or losing your appetite, often along with unexpected weight loss.
Problems with thinking can happen too. This includes memory loss, confusion, or having trouble focusing. In serious cases, people might find it hard to walk, lose their coordination, or may even have heart troubles.
Long-Term Health Implications of Deficiency
Prolonged and untreated thiamine deficiency can cause serious health issues. Thiamine is important for many body functions. A long-term lack of it can harm overall health and lead to chronic diseases.
The nervous system suffers greatly from thiamine deficiency. In severe cases, it can cause permanent nerve damage, affecting how people feel sensations and move. This can result in ongoing pain, numbness, and trouble moving. Additionally, chronic thiamine deficiency can raise the risk of heart failure. This is a condition where the heart weakens over time and cannot pump blood well.
Thiamine deficiency doesn’t only affect the nervous and cardiovascular systems. It can also disturb how the body creates energy in its cells. This can hurt the body’s ability to work well and may lead to a decline in health and well-being.
At-Risk Groups for Vitamin B1 Deficiency
Thiamine deficiency is not very common, but some groups of people are more at risk. This is due to different reasons that affect how well they can absorb and use this important nutrient. It is important to find out who these at-risk groups are. This helps put in place measures to prevent issues and make sure their diets have what they need.
By understanding why these groups may lack thiamine, healthcare workers can give better advice. This can help lower the chances of serious problems caused by a lack of this nutrient.
Chronic Alcohol Consumers
Chronic alcohol use greatly raises the chance of getting thiamine deficiency. This happens for many reasons, such as not getting enough good food, poor thiamine absorption in the gut, and the body not using thiamine well.
People who drink alcohol heavily are very at risk for Wernicke encephalopathy. This is a serious brain disorder caused by thiamine deficiency. It usually shows signs like confusion, loss of coordination (ataxia), and problems with eye movement. If not treated, it can lead to Korsakoff syndrome.
Korsakoff syndrome is a long-lasting memory disorder. It leads to severe memory loss, trouble learning new things, and confabulation, which means making up false memories to cover gaps. Both disorders often happen together and form a range of brain damage from alcohol known as Wernicke-Korsakoff syndrome.
Individuals with Malabsorption Issues
People with digestive problems, especially those affecting the small intestine, have a higher chance of not getting enough thiamine. This is where thiamine is mostly absorbed. Malabsorption can happen because of different gut disorders.
For example, Crohn’s disease and celiac disease can hurt the small intestine lining, making it hard to absorb nutrients. Also, people who have had bariatric surgery, like gastric bypass, may face malabsorption due to changes in their digestive system.
These issues can stop the body from absorbing thiamine from food. This means they might need to adjust their diet or take supplements to avoid a deficiency. It may also be important to regularly check thiamine levels for those with long-term malabsorption problems.
People with Certain Chronic Conditions
People with certain long-term conditions may be more likely to have low thiamine levels. For example, diabetes can raise the risk because it can lead to more thiamine being lost in urine. Those who have diabetes should check their thiamine levels regularly, especially if they have trouble controlling their blood sugar.
Chronic alcoholism, as mentioned before, raises the chance of getting Wernicke-Korsakoff syndrome, a serious brain disorder caused by not having enough thiamine. People who have abused alcohol should be carefully checked and may benefit from taking thiamine supplements.
Congestive heart failure is often linked to low thiamine. Addressing this nutrient shortage, along with normal treatments, is important. Making sure people with heart failure get enough thiamine could help them manage their health better.
Best Natural Food Sources of Vitamin B1

Eating foods rich in thiamine is the best way to get enough of this important nutrient. Luckily, there are many tasty and easy-to-find food sources to help you get your daily intake.
You can choose from plant-based options like whole grains and legumes. Animal-based foods like meat and poultry are also good choices. It’s easy to have a balanced diet that is high in thiamine.
Top Animal-Based Foods
For people who eat animal products, there are many good food sources of thiamine that can fit into a balanced diet. These foods give you thiamine and other important nutrients, making them great for your meals.
Pork, especially lean cuts, is one of the best sources of thiamine. A normal serving offers a good amount of your daily needs. Beef liver is another option; it has a lot of thiamine, though some may not like it.
You can also find thiamine in other animal-based foods. Fish like trout and tuna are great choices, along with poultry such as chicken and turkey. Moreover, breast milk is a source of thiamine, showing how important this nutrient is for the growth and development of infants.
Plant-Based Sources
Plant-based diets can be full of thiamine. This gives many choices for people who eat vegetarian or vegan. By adding different plant-based foods to your meals, you can meet your daily thiamine needs easily.
Whole grains, such as brown rice, oats, and quinoa, are great sources of thiamine. This is especially true when you eat them unrefined. They also give you fiber, minerals, and other B vitamins. This makes them a healthy addition to any diet.
Legumes, like beans, lentils, and peas, should also be on your plate for their good thiamine content. Plus, nuts and seeds, including sunflower seeds, flaxseeds, and macadamia nuts, provide a good amount of this important nutrient.
Fortified Foods
Fortified foods, especially enriched grains, are important for helping with thiamine deficiency. This is especially true in places where people may not get enough thiamine from their diet. Food fortification means adding needed nutrients to foods we eat often. This helps make sure these nutrients are available to more people.
White rice is a common food in many cultures. However, it goes through a refining process that takes away most of its natural thiamine. To help with this loss, thiamine is added back into white rice. This makes it an easy source of thiamine.
Other foods that are often fortified include breakfast cereals, bread, pasta, and flour. These foods offer a simple and convenient way to increase your thiamine intake, particularly for people who do not get enough from what they usually eat.
Here’s a comparison table summarizing the best natural food sources of Vitamin B1 (Thiamine) across different categories:
Comparison of Natural Food Sources of Vitamin B1 (Thiamine)
Category | Food Sources | Thiamine Content (mg per serving) | Additional Benefits |
---|---|---|---|
Animal-Based Foods | Pork (lean cuts) | 0.8–1.1 mg per 3 oz (85g) | High in protein, B vitamins, and iron |
Beef Liver | 0.2–0.3 mg per 3 oz (85g) | Rich in iron, vitamin A, and folate | |
Fish (trout, tuna, salmon) | 0.1–0.4 mg per 3 oz (85g) | High in omega-3 fatty acids | |
Chicken & Turkey | 0.05–0.15 mg per 3 oz (85g) | Good source of lean protein | |
Eggs | 0.02 mg per large egg | Provides healthy fats and choline | |
Plant-Based Sources | Whole Grains (brown rice, oats, quinoa, whole wheat bread) | 0.1–0.3 mg per serving | High in fiber and other B vitamins |
Legumes (lentils, black beans, chickpeas, peas) | 0.2–0.5 mg per cup cooked | Rich in protein, fiber, and minerals | |
Nuts & Seeds (sunflower seeds, flaxseeds, macadamia nuts) | 0.5–1.2 mg per 100g | High in healthy fats and antioxidants | |
Vegetables (peas, asparagus, Brussels sprouts, spinach, potatoes) | 0.1–0.3 mg per cup cooked | Provides fiber, antioxidants, and minerals | |
Fortified Foods | White Rice (enriched) | 0.3–0.6 mg per cup cooked | Easy to digest, staple in many diets |
Breakfast Cereals (fortified) | 1.2–1.5 mg per serving | Often fortified with multiple vitamins | |
Bread (enriched white or whole wheat) | 0.2–0.5 mg per slice | Convenient and widely available | |
Plant-Based Milk (fortified almond, soy, oat milk) | 0.2–0.4 mg per cup | Dairy-free alternative with added nutrients | |
Nutritional Yeast (fortified) | 4–10 mg per 2 tbsp | High in protein, great for vegans |
The Importance of Vitamin B1 in Diet Planning
When making a healthy diet, it’s important to focus on getting enough thiamine. This vital B vitamin helps with many body functions and is key for good health.
Adding foods high in thiamine to your meals is easy. By knowing where to find these foods and using them in your cooking, you can increase your thiamine intake easily and enjoy its many health benefits.
Integrating Thiamin-Rich Foods into Daily Meals
Planning a balanced diet that is rich in thiamine means you need to eat various food sources every day. This will help your body get enough of this important nutrient, which is good for your health and stops deficiencies.
Breakfast, which many call the most important meal of the day, is a great time to eat thiamine-rich foods. Starting your morning with a bowl of fortified cereal or oatmeal with nuts and seeds can give your thiamine levels a good jump right at the start.
For lunch and dinner, try to include lean protein like fish, chicken, or beans. Eating these with whole grains or legumes will help increase your daily thiamine intake. Pairing your meal with some steamed vegetables or a salad will also make it more nutritious.
Meal Planning Tips for Optimal Vitamin B1 Intake
When you plan your meals, keep an eye on portion sizes and what foods you combine. This can help you get more thiamine. Look at dietary supplement labels too. They can help you know how much thiamine is in fortified foods.
Start by adding different thiamine-rich foods to your shopping list each week. Try various grains, legumes, and proteins to make tasty and different meals. Use leftovers in new ways to cut down on waste and make sure you eat foods high in thiamine all week.
If you worry about your thiamine levels, talking to a registered dietitian or nutritionist can help. They can look at your diet, find any issues, and help make a meal plan just for you to get the best nutrients.
Vitamin B1 Supplements: When Are They Necessary?

Getting nutrients from a balanced diet is the best way to go. However, some situations may require using vitamin B1 supplements. These supplements come in different forms and can help when you are not getting enough through your food.
It is very important to talk to a healthcare professional before you start taking any supplements. They can check your needs, suggest the right dosage, and make sure there are no issues with your current medications or health problems.
Choosing the Right Supplement
Navigating dietary supplements can be confusing because there are many options out there. When you choose a thiamine supplement, it is important to understand the different types. You should select a good brand that meets quality standards.
Thiamin supplements usually come in two forms: thiamine hydrochloride or thiamine mononitrate. Both are useful, but it’s best to follow what your doctor says about which one and how much to take. Always check the expiration date and pick a supplement that is stored in a cool, dry place.
The Drug Administration (FDA) does regulate dietary supplements. However, it is very important to choose products from companies that follow Good Manufacturing Practices (GMP). These practices help ensure the quality, purity, and strength of the supplement while reducing the risk of contamination or wrong dosages.
Feature | Thiamine Hydrochloride (HCl) | Thiamine Mononitrate |
---|---|---|
Pros | Highly water-soluble, fast absorption | More stable, longer shelf life |
Effective for rapid deficiency correction | Less acidic, gentler on digestion | |
Used in medical treatments & IV solutions | Common in multivitamins & food fortification | |
Cons | Less stable, degrades faster in moisture | Slightly slower absorption than HCl |
Can have an acidic taste | Not as commonly used in medical treatments | |
Requires careful storage to maintain potency | May be less effective for severe deficiencies |
Dosage and Safety Considerations
Determining the right amount of thiamine supplements depends on each person’s needs and health. You should always talk to your healthcare provider to find the proper dose for you. Taking too much can lead to unwanted effects.
Thiamine is usually safe, but taking more than the upper intake level for a long time can cause side effects. These can include nausea, upset stomach, and allergic reactions. In very rare cases, high doses of thiamine given through an IV might lead to serious problems.
Make sure to follow the dosage instructions given by your healthcare provider or what’s on the product label. If you notice any strange symptoms after taking thiamine supplements, stop using them and talk to your healthcare provider right away.
The Link Between Vitamin B1 and Chronic Diseases
Research is still showing how vitamin B1, or thiamine, may help prevent or manage some long-term diseases. It’s not a quick fix for everything, but keeping thiamine levels steady seems to support overall health and could be helpful.
This nutrient may play a role in managing diabetes and possibly lowering the risk of heart disease. Knowing more about this connection gives us important information about the wide effects of this often-ignored nutrient.
Preventive Role in Diabetes Management
Thiamine does not directly cure diabetes, but some studies show it may help prevent the disease and assist in managing it. Keeping good thiamine levels seems to help glucose metabolism. This could lead to better blood sugar control for people with diabetes.
When someone is low on thiamine, it can make diabetic issues worse, especially nerve damage (diabetic neuropathy). This is a common problem for those who have high blood sugar that isn’t controlled. By making sure to get enough thiamine, people with diabetes could protect themselves from nerve damage.
Also, research shows thiamine may help manage blood pressure, which is very important for diabetes care. While more research is needed, early results suggest that having the right thiamine levels might improve heart health for people with diabetes.
Vitamin B1 Deficiency and Heart Disease Risk
The connection between not having enough thiamine and a higher risk of heart disease is clear. Thiamine is very important for how the heart works. When there is not enough thiamine, it can harm heart health and lead to problems with the heart.
Heart failure is a condition where the heart finds it hard to pump blood well. This can happen because a long-term lack of thiamine makes the heart muscle weaker. A weak heart muscle cannot contract and relax the way it should.
Keeping thiamine levels high can help improve overall heart health. Eating a good diet or taking supplements can help people lower their chances of getting heart disease and may help their heart work better.
Vitamin B1 and Neurodegenerative Diseases
Emerging research shows a possible link between thiamine status and the risk of neurodegenerative diseases, especially Alzheimer’s disease. While we need more studies, early results suggest that thiamine could help protect our brain health as we get older.
Research has found that people with Alzheimer’s disease often have lower thiamine levels in their brains than healthy people. This has caused scientists to look into whether a lack of thiamine could help cause or worsen the disease.
Although taking thiamine supplements won’t cure Alzheimer’s disease, making sure we get enough thiamine in our diet, and possibly through supplements, could help support brain health and slow down cognitive decline as we age.
Innovative Recipes Rich in Vitamin B1
Adding foods rich in thiamine to your meals can be fun and exciting. You can make tasty dishes that are good for your health and also please your palate with some creativity.
You can enjoy many different types of meals, from energizing breakfasts to filling dinners.
Breakfast Ideas to Kickstart Your Day
Jumpstart your metabolism and boost your day with these breakfast ideas full of thiamine. These recipes are easy to make. They give you a healthy start without losing taste.
Option 1: Overnight oats with chia seeds, flaxseeds, and berries. Mix rolled oats, chia seeds, flaxseeds, and your favorite milk in a jar. Let it sit overnight. In the morning, enjoy a creamy and filling breakfast. Add fresh berries on top for extra antioxidants and flavor.
Option 2: Whole-wheat toast with avocado and scrambled eggs. Whole-wheat toast is a great source of thiamine and fiber. Spread mashed avocado for healthy fats. Add scrambled eggs for protein and more thiamine.
Energizing Lunches and Dinners
These lunch and dinner ideas will help keep you energized during the day. They use a mix of foods that are high in thiamin to make tasty meals.
Lunch Idea: A quinoa salad with black beans, corn, and a lime-cilantro dressing. This salad is full of protein, fiber, and great taste. Quinoa has a good amount of thiamine. Black beans add even more fiber and good nutrients. The lime-cilantro dressing gives a fresh and zingy taste.
Dinner Recipe: Baked salmon with roasted vegetables. Salmon is an excellent source of thiamine and omega-3 fatty acids, which are good for your heart. Roasting vegetables like broccoli, Brussels sprouts, and carrots brings out their natural sweetness and gives you important vitamins and minerals.
Overcoming Barriers to Adequate Vitamin B1 Intake

Getting enough thiamine can be hard even if you really want to. This might be due to things like diet choices, money issues, or just not knowing how important thiamine is.
But don’t worry. These problems can be tackled. By knowing what the challenges are and finding easy ways to deal with them, you can make sure you get enough thiamine and enjoy its many health benefits.
Addressing Dietary Restrictions
Dietary limits, whether from allergies, intolerances, or personal choices, should not stop people from getting enough thiamine. Luckily, there are plenty of substitutes and options to ensure good thiamine intake, even with these restrictions.
For those who are sensitive to gluten, choosing gluten-free grains like rice, quinoa, and buckwheat can give them a decent amount of thiamine. Those who cannot have lactose can pick plant-based milk alternatives such as almond milk or soy milk. Many of these options are fortified with thiamine.
Being aware of allergens helps people with food allergies enjoy meals rich in thiamine without risking their health. Properly labeling food items and sharing dietary needs when eating out are important actions to prevent allergic reactions.
Solutions for Budget-Conscious Eaters
Eating healthy without spending a lot of money is possible, even if you want to get enough thiamine. There are many cheap sources of thiamine that you can use for meals and still stay within budget. If you plan ahead, buy in bulk, and check out local farmers’ markets, you can make your food money last longer.
Legumes like lentils, beans, and peas are great low-cost sources of thiamine. They are also packed with protein and fiber. If you buy them dried, they are even cheaper. Plus, you can cook a lot at once.
Another good way to save money is to pick seasonal fruits and vegetables. They are usually cheaper and taste better. Adding thiamine-rich foods like spinach, potatoes, and oranges to your meals can help you get more nutrients without spending too much.
Conclusion
In conclusion, it is important to understand how Vitamin B1 (Thiamin) helps keep us healthy. It supports energy use, nerve function, and can prevent diseases caused by not getting enough. To make sure you get enough Vitamin B1, include food sources that are rich in it in your diet. You can also think about taking supplements if needed. By knowing the signs of deficiency and looking out for risk factors, you can protect your health. Using new recipes and meal plans can help you add Vitamin B1 to your diet in a fun and lasting way. Stay updated on the benefits of Vitamin B1 to support your health and energy in the long run.
Frequently Asked Questions
If you are using high doses of thiamine supplements or vitamin B complex, you should see a doctor before trying betel nut. This is important because betel nut can affect how your body absorbs thiamine. It might also lead to some adverse effects.
There isn’t a specific “best” time to take thiamin supplements. Eating thiamin-rich foods like whole grains during meals can help your body absorb it better. In the end, making sure you get the right daily value each day is more important than when you take it.
Clinical trials have not shown major problems with taking small amounts of thiamin on an empty stomach. However, people who have thiamin deficiency or worry about their thiamin status might do better by taking supplements with food. This can help improve absorption.
Taking too much vitamin B1 usually doesn’t cause side effects, but it could lead to nausea, sweating, and feeling restless. The National Institutes of Health state that no harmful effects have been linked to high doses of thiamine when taken through food.
Vegetarians can get their needed amount of vitamin B1 by adding plant-based foods to their meals. They should include whole grains, legumes, nuts, and fortified foods in their diet.
Both food sources and thiamin supplements give you vitamin B1. However, how well the body uses them can differ. For the general population, eating food sources is usually enough. But people with thiamine deficiency may want to use supplements to get more benefit.