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B1 (Thiamine)

Vitamin B1 (Thiamine) is essential for energy production, brain function, and a healthy nervous system. It helps the body break down carbohydrates and supports muscle function. Since the body does not store B1, regular intake through diet or supplements is important. Foods like whole grains, meat, and nuts provide Thiamine, but some people may need extra support. If you experience fatigue, nerve issues, or difficulty concentrating, a Vitamin B1 supplement may help. Explore our selection of high-quality B1 supplements to support your energy levels and overall health.

Vitabiotics Menopace Max is the most complete nutritional supplement in the Menopace range, created to give advanced support through every stage of menopause. It combines essential vitamins, minerals and active botanical extracts to help with hormone balance, tiredness, bone strength, skin and hair ..
€39.01
Ex Tax:€31.72
Sona Multiplus Iron Free Capsules are a complete daily multivitamin designed for adults who want full nutritional support without added iron. This formula is ideal for people who already get enough iron from their diet, those who feel sensitive to iron supplements, or anyone advised by a healthcare ..
€13.50
Ex Tax:€11.89
Salus Haus Floravital Liquid is a gentle, highly absorbable iron supplement specially formulated for people who want to support energy levels without gluten, yeast or added sugars. It contains easily digested iron in the form of ferrous gluconate, along with essential B vitamins and natural herbal e..
€22.50
Ex Tax:€19.82
Ingredients in Revive Magnesium ComplexEach serving (two capsules) contains: Magnesium Citrate 200 mg Magnesium Bisglycinate 200 mg Magnesium Malate 100 mg Vitamin B6  Pyridoxine Hydrochloride: 2.8mgVitamin B1  Thiamine Hydrochloride: 0.44mgSuitable for veganUses of Revive..
€23.00
Ex Tax:€20.26
A loaded daily formula for people who feel wrecked, foggy, physically drained or running on empty. With amino acids, beta glucans, vitamins and minerals.This Product also comes with a free 7 day pack of Revive Zest Omega. Ingredients in Revive Active Zestper sachet:Baker’s Yeast Extract: 2..
€36.80
Ex Tax:€32.42
A loaded daily formula for people who feel wrecked, foggy, physically drained or running on empty. With amino acids, beta glucans, vitamins and minerals.Ingredients in Revive Active Zestper sachet:Baker’s Yeast Extract: 250mgTaurine: 1,000mgL-Glutamine: 1,000mgL-Lysine: 1,000mgL-Theanine: 100mg..
€11.38
Ex Tax:€9.25
A loaded daily formula for people who feel wrecked, foggy, physically drained or running on empty. With amino acids, beta glucans, vitamins and minerals.Ingredients in Revive Active Zestper sachet:Baker’s Yeast Extract: 250mgTaurine: 1,000mgL-Glutamine: 1,000mgL-Lysine: 1,000mgL-Theanine: 100mg..
€32.50
Ex Tax:€28.63
More than a teenagers multivitamin, with probiotics, prebiotic fibre, vitamins and minerals in one sachet. For Teenagers that need more than a basic tonic.Ingredients in Revive Active TeenTeen Revive ingredients per sachet:Chicory Root Extract: 1,000mgBaker’s Yeast Extract: 100mgBacillus Coagul..
€19.75
Ex Tax:€17.40
More than a teenagers multivitamin, with probiotics, prebiotic fibre, vitamins and minerals in one sachet. For Teenagers that need more than a basic tonic.Ingredients in Revive Active TeenTeen Revive ingredients per sachet:Chicory Root Extract: 1,000mgBaker’s Yeast Extract: 100mgBacillus Coagul..
€18.80
Ex Tax:€16.56
More than a multivitamin, this is a serious daily formula for energy, blood flow, immunity and recovery.Ingredients in Revive Active Orange & MangoEach Sachet contains:L-Arginine: 3,000mgChicory Root Extract: 3,000mgCitrulline DL-Malate: 2,000mgL-Arginine Alpha-Ketoglutarate: 1,000mgTaurine..
€19.75
Ex Tax:€17.40
More than a multivitamin, this is a serious daily formula for energy, blood flow, immunity and recovery.Ingredients in Revive Active Orange & MangoEach Sachet contains:L-Arginine: 3,000mgChicory Root Extract: 3,000mgCitrulline DL-Malate: 2,000mgL-Arginine Alpha-Ketoglutarate: 1,000mgTaurine..
€54.95
Ex Tax:€48.41
Revive Active Calm Capsules (60) Revive Active Calm Capsules (60)
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Revive Active Calm Capsules is a premium daily supplement developed to support relaxation, emotional balance and nervous system health. The formula combines well-researched plant extracts with amino acids, vitamins and minerals to help the body cope with everyday stress and tension. Calm is designed..
€27.09 €28.66
Ex Tax:€22.02
Melissa Dream Restful Sleep tablets are a thoughtfully formulated sleep support supplement designed for adults who find winding down challenging or struggle with occasional sleep disruption.The blend of lemon balm extract, chamomile, the amino acid L-theanine, magnesium and a B-vitamin complex works..
€11.80
Ex Tax:€10.40
MAG365 Kids is a fruit-flavoured multi-mineral drink formulated for children, combining ionic magnesium citrate with calcium, zinc, vitamin C, vitamin B6, vitamin D3 and vitamin K2 as MK-7. Ingredients in Mag365 KidsMagnesium (as citrate) 140 mg: helps relax muscles and the nervous system, key for s..
€36.50
Ex Tax:€32.16
CoQ10 boosts energy in your cells, strengthens heart function and replaces what statins drain, often behind ongoing fatigue.Most multivitamins give you a long list of nutrients at token doses. Macánta Multi-Complex takes a different approach, combining over 30 active ingredients at meaningful levels..
€34.95
Ex Tax:€30.79
What Life Boost B-Complex Does Life Boost One A Day B-Complex & B12 is designed to support steady energy levels, healthy nerves and normal red blood cell formation. B vitamins are involved in almost every energy-producing process in the body, so when intake is low, tiredness, poor concentr..
€7.70
Ex Tax:€6.26
Plant sterols at 1,500mg to 2,400mg daily are clinically proven to reduce LDL cholesterol by 7% to 12%This is a cholesterol-lowering supplement from fabU, the Irish brand formulated by pharmacist Laura Dowling. Each three-tablet daily serving gives1,500mg of plant sterols alongside Shiitake mushroom..
€23.99
Ex Tax:€21.14
Vivioptal Capsules are a high-strength multivitamin and multimineral supplement designed to support daily energy, immunity, brain function and overall wellbeing. This formula combines essential vitamins, minerals and antioxidants that help maintain vitality during busy lifestyles, physical activity,..
€10.85
Ex Tax:€9.56
Vitabiotics Wellwoman 50+ is a complete daily multivitamin designed specifically for the nutritional needs of women aged 50 and above. As the body changes with age, it requires targeted support for energy, immunity, bones, heart, brain function and hormone balance. Wellwoman 50+ provides a carefully..
€17.10
Ex Tax:€15.07
Vitabiotics Wellteen For Him is a complete multivitamin designed specifically to support the nutritional needs of teenage boys and young men aged 13–19. The teenage years involve rapid physical growth, busy study schedules, sports performance and hormonal changes, all of which increase daily nutriti..
€13.50
Ex Tax:€11.89
Vitabiotics Wellman is a complete daily multivitamin designed specifically to support the nutritional needs of men. Busy schedules, training, work pressure and lifestyle can place extra demands on the male body. Wellman provides targeted vitamins and minerals to support energy, immunity, muscle func..
€15.00
Ex Tax:€13.22
Vitabiotics Pregnacare Plus 28 Tablets Vitabiotics Pregnacare Plus 28 Tablets
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Vitabiotics Pregnacare Plus is an advanced pregnancy multivitamin designed to support women from pre-conception through all stages of pregnancy and while breastfeeding. This dual-pack formula combines the trusted Pregnacare Original micronutrient tablet with a high-purity Omega-3 capsule to provide ..
€27.00 €30.00
Ex Tax:€23.79
Vitabiotics Pregnacare Original Tablets is a trusted daily pregnancy multivitamin designed to support women who are trying to conceive, already pregnant or breastfeeding. Developed with expert nutritional research, this formula provides the exact vitamins and minerals recommended for pregnancy, incl..
€9.50
Ex Tax:€8.37
Vitabiotics Pregnacare Plus is an advanced dual-pack pregnancy supplement designed to support women who are trying to conceive, are pregnant or are breastfeeding. It combines the scientifically developed Pregnacare Original micronutrient tablet with a high-purity Omega-3 capsule to provide complete ..
€32.40
Ex Tax:€28.55
Vitabiotics Perfectil Plus Skin is an advanced beauty supplement formulated to support clear, radiant and hydrated skin from the inside out. It combines the original Perfectil skin, hair and nail formula with additional skin-focused nutrients, including extra collagen, omega-3, omega-6 and key antio..
€31.00
Ex Tax:€27.31
Vitabiotics Perfectil Plus Nails Extra Supportis a specialist beauty supplement designed to give targeted support for strong, healthy and resilient nails. It combines the original Perfectil skin, hair and nail formula with extra nail-specific nutrients, including additional selenium, zinc, cysteine ..
€33.90
Ex Tax:€29.87
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What are the benefits of taking Vitamin B1 (Thiamine)?

Vitamin B1 helps convert food into energy, reducing tiredness and supporting metabolism. It is essential for nerve function and brain health, improving concentration and reducing brain fog. Thiamine also supports muscle function, helping to prevent weakness and cramping. A lack of B1 can lead to fatigue, mood changes, and nerve problems. People who consume a lot of refined carbohydrates, alcohol, or have certain medical conditions may need extra B1. Taking a supplement ensures a steady intake, helping to maintain energy levels, mental clarity, and a well-functioning nervous system.


Who should take Vitamin B1 (Thiamine) supplements?

People at risk of B1 deficiency include those with high carbohydrate diets, excessive alcohol intake, or certain medical conditions affecting absorption. Older adults, pregnant women, and individuals with digestive disorders may also need additional Thiamine. Athletes and active individuals use more B1 for energy production and may benefit from supplementation. If you experience tiredness, memory problems, or nerve pain, a Thiamine supplement could help. Since the body does not store B1, daily intake is important to maintain optimal health. Consulting a healthcare professional can help determine if supplementation is necessary.


Can I get enough Vitamin B1 from food?

Yes, Vitamin B1 is found in whole grains, meat, fish, dairy, nuts, and legumes. However, cooking methods and processed foods can reduce Thiamine content. People with restricted diets, poor absorption, or high energy needs may struggle to get enough from food alone. Alcohol consumption can also interfere with B1 absorption. If you do not consume enough Thiamine-rich foods or experience symptoms of deficiency, a supplement may be a practical way to ensure your body gets the B1 it needs.


What happens if I don’t get enough Vitamin B1?

A B1 deficiency can cause fatigue, muscle weakness, and mental fog. Severe deficiency may lead to nerve damage, poor coordination, and a condition called beriberi, which affects the heart and nervous system. Long-term deficiency is linked to Wernicke-Korsakoff syndrome, a brain disorder commonly associated with alcohol misuse. Symptoms can include confusion, difficulty walking, and memory loss. Ensuring a consistent intake of Thiamine through diet or supplements helps maintain energy levels, brain function, and a healthy nervous system.


Can I take too much Vitamin B1?

Vitamin B1 is a water-soluble vitamin, meaning excess amounts are usually excreted through urine. This makes toxicity rare. However, very high doses may cause mild side effects, such as stomach discomfort. Most people can safely take Thiamine supplements within recommended guidelines. If you are unsure about the right dosage, it is best to seek advice from a healthcare professional to ensure you are getting the right amount for your needs.