1 / 8
Thorne Basic B Complex is a complete B-vitamin supplement providing all eight B vitamins - thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), B6, B12, folate, and biotin - in a single daily capsule.
£25
Thorne Basic B Complex is a complete B-vitamin supplement providing all eight B vitamins - thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), B6, B12, folate, and biotin - in a single daily capsule.
Thorne Basic B Complex is a complete B-vitamin supplement providing all eight B vitamins - thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), B6, B12, folate, and biotin - in a single daily capsule.
Take one capsule daily. B vitamins are water-soluble, so timing is flexible, but taking it with a meal may reduce the mild nausea some people notice on an empty stomach. Follow any additional guidance on the packaging.
Thorne Basic B Complex is a complete B-vitamin supplement providing all eight B vitamins - thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), B6, B12, folate, and biotin - in a single daily capsule. B vitamins act as coenzymes across hundreds of metabolic reactions, most notably in the conversion of carbohydrates, fats, and proteins into usable energy, and in the synthesis and repair of DNA.
This formula suits people whose intake may be compromised by diet - vegans and vegetarians are particularly prone to low B12 - as well as those under sustained stress, in heavy training, or taking medications known to deplete B-vitamin status (metformin and oral contraceptives are two common examples). It is also a practical option for anyone who has confirmed suboptimal B12 or folate on a blood panel and wants a broad-spectrum B supplement rather than individual isolates.
Thorne is a brand with a strong reputation for manufacturing rigour and formulation transparency, and their Basic B Complex uses bioavailable forms of the key vitamins. Folate, for instance, is included as a methylated form rather than synthetic folic acid - a meaningful distinction for individuals with MTHFR gene variants who convert folic acid less efficiently. This is a straightforward, well-composed supplement that earns its place in a nutrition stack when B-vitamin status is a genuine clinical consideration rather than a precaution taken in the dark.
Standard UK delivery included on every order, 1 to 3 working days after dispatch.
Next working day for £25 when you order by 12pm. Orders placed before 12pm on a working day leave the same day. Later orders leave the next working day.
You can return unopened and unused items within 30 days of delivery. This does not affect your statutory rights. Read the delivery and returns terms
Your Profile
Your first order creates it. Add your blood results or a wearable, and a doctor can recommend what suits you.
Sign inB vitamins work closely together in metabolic pathways, so deficiency in one often reflects broader insufficiency. A complex addresses the full picture in one capsule, which is practical for most people unless a specific isolated deficiency has been confirmed by testing.
B12 is found almost exclusively in animal products, making deficiency common in vegan and vegetarian diets. A B complex that includes B12 is a reasonable daily safeguard, though anyone with confirmed deficiency should discuss therapeutic dosing with their doctor.
Methylated folate (5-MTHF) is the active form the body uses directly. Synthetic folic acid requires conversion, and individuals with MTHFR gene variants convert it less efficiently. Using methylated folate sidesteps that bottleneck.
B vitamins are generally well tolerated alongside other supplements. However, if you take medications such as metformin or oral contraceptives — both of which can deplete certain B vitamins — or if you are on any treatment affecting folate metabolism, check with your GP or pharmacist before adding any supplement.
If you have a genuine shortfall, energy and mood improvements may be noticeable within a few weeks. If your levels were already adequate, the effect is less likely to be perceptible. A follow-up blood panel is the most reliable way to confirm your status has improved.
Overall
6 months ago
Been taking this for about six weeks now. Energy in the afternoons feels more consistent — hard to attribute that to any one thing but this is the main thing I added. Swapped from a cheaper supermarket brand and the difference in formulation is noticeable when you actually read the label.
6 months ago
Takes the guesswork out of B vitamins. One capsule, done.
6 months ago
As someone who's been plant-based for years, keeping B12 topped up is always on my mind. My last blood panel flagged it as low-normal so I started this alongside dietary changes. Follow-up test three months later was back in range. Obviously I can't credit this alone but it's part of what I'm doing and I'll keep using it.
6 months ago
Formulation is clearly well thought out — methylated folate rather than folic acid is the kind of thing that matters to me given I have an MTHFR variant. My only gripe is the price for 60 capsules. At one a day it's just over two months' supply and there are cheaper options, even if they're not quite as good.
7 months ago
Take it with breakfast alongside magnesium and omega-3. No nausea, no odd aftertaste, capsule size is fine. Noticed my nails feel a bit stronger but that might be the biotin — hard to isolate variables.
7 months ago
Doctor suggested I look into B vitamins after some fatigue and I ended up here after a bit of research. Happy with the quality. Capsule goes down easily.
Biomarker check, £350MaryleboneSee your vitamin D, iron and B12.At our clinic in Marylebone, London, doctors also offer private blood tests and longevity medicine.
A curated selection of products, tools and rituals, chosen by our doctors.
