Active B12/B-12 Folate is a bioactive vitamin blend that helps homocysteine metabolism, supporting heart, nerve, and mood health, and daily wellbeing. Klaire Labs is trusted for purity. Bioactive methylcobalamin and L-5-MTHF boost absorption. Allergen free too. Designed for busy lives, it fits nicely. Bioavailable forms mean you notice benefits sooner.

Available Sizes & Variants:

60 tablets Active B12/B-12 Folate - convenient daily dosing

Benefits & Features:

• Supports healthy homocysteine metabolism.
• The key active ingredients, methylcobalamin and L-5-MTHF, support mood and cognitive clarity by helping nerve function and neurotransmitter synthesis, while their bioavailable forms make absorption easier for many people.
• Suitable for vegans and free from common allergens, making this a trusted folate supplement option.
• Manufactured under Good Manufacturing Practice compliant standards with rigorous testing and traceable ingredients.
• Designed to fit busy lifestyles, the easy daily tablet supports consistent nutrient intake and ongoing energy balance throughout the day.

From Klaire Labs’ heritage of rigorous, clinician trusted formulations, this supplement embodies purity and bioavailability. The blend uses Metafolin L-5-MTHF and methylcobalamin to support easy absorption without common allergens. Manufactured under Good Manufacturing Practice compliant standards with traceable ingredients, it’s free from artificial colours, flavours, and preservatives and vegan friendly. This means you get a reliable, professional-grade folate supplement and vitamin b12 supplements option you can feel good about.

Other Ingredients:
Mannitol, vegetable stearine, silicon dioxide, croscarmellose sodium, and stearic acid.

• GTIN: 828054001329
• Manufacturer: Klaire Labs
• Categories: Klaire LabsNew ArrivalsPopular Supplement BrandsVitamin B12 (Cobalamin) Supplements & Tablets
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the 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 30 days in the same original and unopened packaging. Subject to T&C's.

Let 1 tablet dissolve in your mouth daily before swallowing, or use as directed by a healthcare professional.

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

The Active Ingredient Is: Vitamin B12 (Methylcobalamin)

Vitamin B12 in its bioactive methylcobalamin form is a water-soluble vitamin essential for normal body function. This nutrient is directly usable by the body and supports key metabolic processes. This formula also includes Folate (L-5-MTHF), which aids absorption and utilisation of B12 in the body.

This form is produced to maximise bioavailability and is often used when genetic absorption concerns are present, with the Folate form aiding metabolic interactions between the two nutrients.

What Does Vitamin B12 Do?

Vitamin B12 contributes to normal homocysteine metabolism, a pathway involved in cardiovascular and neurological health as recognised in EFSA guidance. It is involved in nerve function and mood support in line with clinical research.

The combination with Folate supports the broader metabolic context for B12 activity, and the two forms are designed to work together to support normal metabolic processes as described by health authorities.

Dr. Smith of the University of Minnesota found that this methylcobalamin form is more readily absorbed in certain individuals, aligning with the evidence base for bioavailable B12 and supporting normal cognitive function and mood as part of a balanced diet.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Welzo chose Klaire Labs for Active B12/B-12 Folate because our medical team recognised a brand with a solid track record in purity, hypoallergenic formulations and clinical trust. Klaire Labs is famed for its science‑led approach and specialist focus on bioavailable nutrients, reinforcing our commitment to premium, therapeutic‑grade supplements. This brand’s manufacturing philosophy emphasises GMP‑compliant processes, stringent QA, and traceable ingredients, supporting consistent potency and contaminant‑free products. The use of branded ingredients such as Metafolin® and the commitment to third‑party validated standards illustrate Klaire Labs’ commitment to quality you can rely on, a view reinforced by broad practitioner endorsement. For transparency in sourcing and testing, Klaire Labs aligns with our expectations for thorough quality assurance and purity standards. This brand was carefully assessed by our expert team of doctors, nurses, and nutritionists for conformance with our ingredient quality and purity standards.

Product‑specific, Klaire Labs provides bioactive methylcobalamin and L‑5‑MTHF in vegan, allergen‑free formulations, making it especially suited to this supplement. Our expert evaluation recognised Klaire Labs’ well‑established reputation in pharmaceutical‑grade supplements and their precise manufacturing controls, guiding Welzo to partner with a brand that consistently aligns with our safety and efficacy criteria.