BioTechUSA One-A-Day is a thorough multivitamin built to help you maintain energy levels and support daily immune health, thanks to a mix of essential vitamins and minerals. Key active ingredients include B vitamins for energy and fatigue relief, along with a vitamin D for immune support and vitamin C with zinc for antioxidant protection. BioTechUSA uses pharmaceutical-grade forms like retinyl acetate and DL-alpha-tocopheryl acetate, together with chelated minerals to aid absorption and everyday wellbeing. Quality you can truly feel today.

Available Sizes & Variants:

100 tablets multivitamin – Daily support in one daily tablet.

Benefits & Features:

• Boosts daily energy and helps reduce tiredness through a balanced B vitamin complex.
• Supports immune health with vitamins A, C, D and zinc for resilient daily defence.
• Chelated minerals maximise absorption and provide gentle, steady energy support across multiple body systems.
• Lactose-free, gluten-free and vegan friendly for many.
• Daily supplementation with this one a day helps cover nutritional gaps, so you can focus on your workouts, work, and family life day in day out without worrying about micronutrient shortfalls.

BioTechUSA has a long standing, tried and trusted focus on practical daily nutrition. This One-A-Day multivitamin packs 12 vitamins and 10 minerals into a single tablet, designed to help prevent nutrient gaps and support energy, immunity and everyday vitality. The formula uses lactose-free, gluten-free and vegan-friendly ingredients, with chelated minerals for better absorption and pharmaceutical-grade forms like retinyl acetate and DL-alpha-tocopheryl acetate. Quality you can feel.

Bulking Agent (Cellulose Gel), Calcium Salts of Orthophosphoric Acid, Magnesium Oxide, L-Ascorbic Acid, Coating Material (Stabilisers (Polyvinyl Alcohol-Polyethylene Glycol-Graft-Co-Polymer, Polyvinyl Alcohol), Anti-Caking Agents (Talc, Mono- and Diglycerides of Fatty Acids), Colour (Titanium Dioxide)), Anti Caking Agents (Magnesium Salts of Fatty Acids, Silicon Dioxide), Ferrous Fumarate, Dl-Alpha-Tocopheryl Acetate, Nicotinamide, Zinc Oxide, Retinyl Acetate, Manganese Sulphate, D-Pantothenate, Calcium, Cholecalciferol, Thiamin Mononitrate, Pyridoxine Hydrochloride, Riboflavin, Pteroylmonoglutamic Acid, Potassium Iodide, Chromium (III) Chloride, Sodium Molybdate, Sodium Selenite, D-Biotin, Cyanocobalamin,

• GTIN: 5999076244737
• Manufacturer: BioTechUSA
• Categories: Best SellersBioTechUSA SupplementsSports SupplementsSubscribe & Save Products
• Best buy: 6 - 24 months+

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched next working day).

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Take 1 tablet daily with a glass of water during your meal. Do not exceed the recommended daily amount. Dietary supplements do not replace a varied and balanced diet and healthy lifestyle. Keep out of reach of small children. Store in a cool, dry place away from direct sunlight.

Please consult the product packaging for accurate instructions on how to use the product.

Vitamin D3 is basically a fat-soluble vitamin that’s essential for healthy bones and immune function.

This form of vitamin D is supplied in a standard supplement format and is recognised for its part in supporting bodily calcium handling and immune system activity.

What Does Vitamin D3 Do?

Vitamin D3 helps to support calcium absorption and contributes to keeping bone mineral density up, aligning with EFSA guidance on how vitamin D supports bone health. It also takes part in immune system function as part of a balanced nutrient mix.

In this multivitamin, Vitamin D3 teams up with other nutrients to support overall metabolic and immune health, without giving dosage details.

This product isn’t meant to diagnose, treat, cure or prevent any disease.

Vitamin A: 1650 µg, Vitamin C: 120 mg, Vitamin D: 10 µg, Vitamin E: 13.4 mg, Thiamin: 3 mg, Riboflavin: 3 mg, Niacin: 30 mg, Vitamin B6: 3 mg, Folic Acid: 400 µg, Vitamin B12: 9 µg, Biotin: 15 µg, Pantothenic Acid: 10 mg, Calcium: 120 mg, Iron: 17 mg, Phosphorus: 105 mg, Iodine: 150 µg, Magnesium: 100 mg, Zinc: 15 mg, Selenium: 10 µg, Manganese: 4 mg, Chromium: 15 µg, Molybdenum: 15 µg

BioTechUSA has been chosen by Welzo for its sturdy, all-encompassing daily multivitamin approach and commitment to premium ingredient forms. This brand consistently uses pharmaceutical-grade vitamin forms and chelated minerals, which helps absorption and reliable nutrient delivery. The One-A-Day formula is made lactose-free, gluten-free and vegan-friendly, matching a wide spectrum of dietary needs and reinforcing Welzo’s focus on accessibility and inclusivity.

The brand’s reliability shows in its established portfolio of complete nutrient profiles, focusing on delivering essential vitamins and minerals in balanced amounts for daily wellness. This alignment with Welzo’s quality standards is underscored by our team of medical experts evaluating the product against our internal criteria, and by the brand’s transparent approach to ingredient quality. For customers seeking a well‑rounded daily multivitamin, BioTechUSA One-A-Day stands out for its thoughtfully technical formulation and dietary versatility, making it a strong fit within our curated offering. This brand was evaluated by our team of medical experts for compliance with our supplement quality standards.