Thorne

Basic B Complex

£25.00

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.

  • Supports cellular energy metabolism via coenzyme activity
  • Provides methylated folate — relevant for MTHFR variants
  • Covers B12 shortfall common in vegan and vegetarian diets
  • May support nervous system function and mood regulation
  • Broad-spectrum B support in a single daily capsule
1
ThorneBasic B Complex
1

recommended alongside

Vitamin D3 + K2 liquid drops

Vitamin D3 + K2 Liquid Drops deliver two fat-soluble nutrients that are commonly considered together: D3 as cholecalciferol — the form most readily converted a…

Welzo Akkermansia 60 Billion AFU Ultra Purity

60 billion AFU of Akkermansia muciniphila plus 64 billion CFU of Lactobacillus acidophilus, 700 mg berberine, 200 mg inulin, 2.4 mg astaxanthin, and chromium i…

Interested in more
personalised recommendations?

Set up your WA\ Profile to connect your wearables, biomarkers and test results. Create a bespoke plan based on your unique biology. Expert-led, evidence-based.

Set up Profile now

about this product.

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.

B1, B2, B3, B5, B6, B12, Folate, Biotin

how to take it

i.

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.

frequently asked.

Why choose a B complex rather than individual B vitamins?

B 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.

Is this suitable for vegans?

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.

What does methylated folate mean and why does it matter?

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.

Can I take this alongside other supplements or medications?

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.

How long before I notice a difference?

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.

you may also like

AEKE

AEKE K1 AI-Powered Smart Home Gym

Discover

Dryft

Dryft Sleep Mouth Tape Sleep Strips

Discover

Finding your calm in a stressful environment

We offer physician-led talks and events to help you learn more about how to deal with stress through movement, mindfulness, and refocusing.

Learn about our next event

Customer reflections

Overall sentiment

4.837 reflections
1 – 6 of 37 reflections
QQVerified Buyer

The first adrenal support that made a quick difference.

4 days ago

Gentle on a sensitive stomach, and I feel like myself again. I had tried two other glandulars before this and neither sat right.

MRVerified Buyer

Steadier mornings within a fortnight.

1 week ago

I was sceptical about glandulars, but my mid-afternoon crash has genuinely eased. One capsule with breakfast and I forget about it.

ALVerified Buyer

Subtle, but real.

2 weeks ago

Not a stimulant, which is exactly what I wanted. It took about ten days, then I realised I wasn’t dreading the afternoon any more.

SKVerified Buyer

My clinician recommended it.

3 weeks ago

Bought after a blood panel flagged a flat cortisol curve. Easy to take, no jitters, and the sourcing is refreshingly transparent.

TPVerified Buyer

Recovery feels faster.

1 month ago

Training hard through a stressful stretch and this has helped me bounce back between sessions. Already on my second bottle.

DVVerified Buyer

Does what it says.

1 month ago

No frills, one ingredient, a sensible dose. I appreciate that it is designed to be used for a season rather than forever.

shop by selection

test before you supplement.

A blood test is the only way to know what your body actually needs. We’ll tell you which of these supplements is right for you.

Find your panel

more from thorne. View all