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Doctor’s Best Fully Active B-Complex with Quatrefolic
Doctor’s Best Fully Active B-Complex with Quatrefolic is a comprehensive B vitamin formula using active forms, including Quatrefolic folate. B vitamins contribute to normal energy-yielding metabolism and the reduction of tiredness and fatigue. Available in 2 sizes.
Description
Doctor’s Best Fully Active B-Complex with Quatrefolic – Active B Vitamins
Doctor’s Best Fully Active B-Complex with Quatrefolic brings together the full family of B vitamins in vegetable capsules, using active forms where possible. Folate comes as Quatrefolic, a branded form of (6S)-5-methyltetrahydrofolate, rather than standard folic acid. The Fully Active range from Doctor’s Best is designed for people who prefer nutrients already in the forms the body uses, all in a single daily capsule.
Key Benefits of Doctor’s Best Fully Active B-Complex
- Energy metabolism – B vitamins such as B6, B12, niacin and riboflavin contribute to normal energy-yielding metabolism.
- Less tiredness – vitamins B6, B12 and folate contribute to the reduction of tiredness and fatigue.
- Quatrefolic folate – a branded active form of folate rather than folic acid.
- Full B spectrum – the family of B vitamins in one product.
- Vegetable capsules – a plant-based capsule shell.
Who Is It For?
Ideal for people who want a premium, active-form B complex, including those who prefer methylfolate to folic acid, busy professionals, gym-goers and anyone looking for everyday support with tiredness and energy.
Flavours & Sizes
Available in 30 vcaps and 60 vcaps. Both contain the same Fully Active formula; choose the size that suits how often you want to reorder.
FAQs
What is Quatrefolic?
Quatrefolic is a branded form of (6S)-5-methyltetrahydrofolate, an active form of folate, used in place of standard folic acid.
Will it change my urine colour?
Yes, riboflavin (vitamin B2) is naturally bright yellow, so a brighter urine colour is normal.
Why Shop With Lotty8 Supps?
- Genuine, factory-sealed products – sourced through established UK sports-nutrition wholesale distribution. Never repackaged, never grey-market.
- Fast dispatch – orders placed before 1pm on a working day are dispatched the same day with Royal Mail Tracked 48.
- Low-cost UK delivery – £3.99 per order, free on orders over £100. See our Delivery & Returns page.
- Hassle-free returns – full details on our Delivery & Returns page.
- Top brands in one place – Applied Nutrition, BioTechUSA, SciTec, NOW Foods, Doctor’s Best and many more.
- Real people, real help – questions about a product or your order? Contact the Lotty8 team.
Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. Do not exceed the recommended daily intake. Keep out of reach of young children. Formulations and packaging can change – always read the label on the product you receive before use.
Take one vegetable capsule a day, or the amount stated on the label, with a meal and a glass of water, ideally in the morning. Check the total B vitamins in any other supplements you take to avoid doubling up. If pregnant or planning a pregnancy, speak to your GP or midwife first.
Always follow the directions on the product label. Do not exceed the recommended daily intake.
- Brand: Doctor's Best
- Product: Doctor's Best Fully Active B-Complex with Quatrefolic
- Sizes available: 30 vcaps, 60 vcaps
- Country of origin: United States
Country of origin: United States
Best before: shown when you choose an option.
Additional information
| Weight | N/A |
|---|---|
| Size | 30 vcaps, 60 vcaps |
| Country of Origin | United States |










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