Active B Complex offers bioactive B vitamins for quick, steady energy support, and helps you stay focused and metabolically balanced in everyday life. Active B Complex uses bioactive coenzyme forms designed to improve absorption and cellular use. The mix includes Metafolin for folate, methylcobalamin for B12, and pyridoxal phosphate for B6. Klaire Labs focuses on purity and professional grade quality, so you get a vegan, gluten free formula free from major allergens.

Available Sizes & Variants:

60 capsules – a convenient daily dose for steady support

Benefits & Features:

• Helps energy production and metabolism, keeping you focused and alert every day.
• Bioactive forms, including Metafolin for folate and methylcobalamin, bypass common genetic roadblocks, making B complex vitamins easier for your body to use and supporting energy production, mood, and nerve health.
• Vegan capsules support plant-based diets while keeping everyday wellness simple.
• Free from common allergens and artificial additives.
• Designed for daily use with food, these high-potency capsules fit into your morning routine and keep nutrient support steady.

Active B Complex stands out for its bioactive coenzyme forms, Metafolin for folate, methylcobalamin for B12, benfotiamine for thiamin, and pyridoxal phosphate for B6, so nutrients are ready to be used by cells. Klaire Labs prioritises purity with vegan, gluten-free capsules free from major allergens and artificial additives. It's designed with professional use in mind. This blend supports energy and metabolism in busy lives. It also pairs well with a vitamin D supplement and probiotics as part of a holistic wellness routine.

(other) Vegetarian capsule (hydroxypropyl methylcellulose, water), microcrystalline cellulose, ascorbyl palmitate, and silicon dioxide.

• GTIN: 828054001848
• Manufacturer: Klaire Labs
• Categories: Klaire LabsNew ArrivalsPopular Supplement Brands
• 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.

Take one capsule daily with food, or follow your healthcare professional's instructions. Take 2 capsules\, 2 times daily with food or as directed by a healthcare professional

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

The Primary Benefit Is: Energy Metabolism Support

Energy metabolism support covers how your body turns food into cellular energy. Bioactive B vitamins are described as enabling pathways that energy production relies on, contributing to normal metabolic function.

This formula includes bioactive folate and methylated B vitamins, which are meant to help absorption and cellular utilisation. Researchers note that bioactive forms bypass common metabolic conversion steps, supporting efficient use within cells.

How Does This Support Energy Metabolism?

The combination of bioavailable B vitamins aids in normal energy production and metabolic functioning, aligning with EFSA-style function claims. In studies, Dr. Scaglione of the University of Florence found that bioactive B vitamins can support metabolic processes involved in energy utilisation.

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

Klaire Labs has made its spot as Welzo Selected partner thanks to a longstanding focus on high quality, specialist B vitamins and a dedication to bioavailable forms. The brand is recognised for its professional heritage and focus on practitioner-led formulations, aligning with Welzo’s standards of reliability and scientific rigour. This heritage and a committed approach to micronutrient science underpin our confidence in Klaire Labs as a reliable, trusted supplier for this complex B‑vitamin blend.

Our medical team reviews Klaire Labs’ credentials, including their use of bioactive forms such as benfotiamine, methylcobalamin and L-5‑MTHF in Active B Complex, which supports efficient absorption and cellular utilisation. We’ve encompassed this evaluation within Welzo’s vetting process, and our experts weigh the brand against our quality criteria to ensure safety and consistency. For a detailed view of how we assess products and brands, visit our medical team and our ingredient quality and purity standards.

Ultimately, Klaire Labs’ quality focus, vegan-friendly formulation, and alignment with our product fit for bioactive B vitamins make this brand a natural Welzo Selected partner for Active B Complex.