Life Extension Vitamin B3 Niacin is a high dose supplement designed to support energy production and healthy cholesterol metabolism for daily wellness. The key active ingredient, niacin, supports energy production and cardiovascular health. Life Extension is an award-winning brand known for science led formulations and strict quality standards, with rigorous quality control and independent testing to verify potency and purity. This vitamin d supplement provides additional support for bone and immune health as part of a balanced daily routine.

Available Sizes & Variants:

100 capsules - high potency niacin capsule for daily use.

Benefits & Features:

• Supports energy production by helping the body convert carbohydrates, fats and proteins.
• Promotes healthy cholesterol metabolism by supporting lipid processing in the liver.
• Ideal for daily use, supporting energy and heart health.
• Niacin acts as a precursor to NAD+, helping convert carbohydrates, fats and proteins into energy while supporting endothelial health and overall metabolic function.
• Manufactured to strict quality standards with independent testing to verify potency and purity.

Life Extension has built a reputation on science led formulations and rigorous quality control. This niacin capsule is quickly and easily absorbed, produced under cGMP guidelines and tested by independent labs to confirm potency and purity. The brand’s heritage means you get a straightforward, well proven option that health conscious customers value for predictable everyday support. Niacin plays a key role in cellular energy and cholesterol management, which helps explain why this product is a trusted staple in many wellness routines. Creatine may be used alongside this vitamin b3 niacin routine by some users seeking additional athletic support.

Other Ingredients - gelatin, vegetable stearate
Free From - Gluten

• GTIN: 737870372103
• Manufacturer: Life Extension
• Categories: Best SellersCholesterol Lowering SupplementsNew ArrivalsSubscribe & Save ProductsVitamin B Complex Supplements & TabletsVitamin B3 (Niacin) 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.

Take one capsule daily with food, or as advised by a healthcare provider.

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

The Active Ingredient Is: Vitamin B3 (Niacin)

Vitamin B3, known as niacin, is a water-soluble vitamin essential for cellular energy production. This formulation delivers niacin as the sole active ingredient in the capsule.

Niacin acts as a precursor to NAD+, supporting metabolic processes and cardiovascular function. This source provides a straightforward form of the nutrient to support normal energy production and vascular health.

What Does Vitamin B3 Do?

Niacin helps regulate energy production by supporting NAD+-dependent metabolism and plays a role in maintaining normal cardiovascular function. Dr. Guyton of Johns Hopkins University found that niacin can significantly improve blood lipids when used at appropriate doses.

In addition, niacin contributes to cellular energy processes and supports endothelial health as part of a balanced metabolic profile.

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

Dietary supplements are not a replacement for a balanced diet. Do not take more than the recommended amount. Keep in a cool, dry area away from light and heat. Ensure they are out of children's reach and view.

Life Extension Vitamin B3 Niacin is Welzo Selected because Life Extension leads with a heritage of scientifically formulated, high‑quality supplements. This brand has earned recognition as an award‑winning staple in the industry, repeatedly highlighted for reliability and customer trust by independent assessments. Their commitment to research‑driven development is reflected in a long‑standing reputation for robust product quality and clinical relevance, underscoring why we partner with them for precision‑dosed nutrients.

This brand stands out in our evaluation for its rigorous quality standards and testing philosophy. Life Extension manufactures to cGMP compliance and employs both in‑house and independent third‑party testing to verify identity, potency and purity, aligning with our own quality certification process. Our medical team reviews brand practices as part of our due diligence, and you can see how we collaborate on safety and standards by visiting our medical team and reviewing our quality certification process.

Product‑wise, Niacin is a well‑defined single active ingredient, ensuring a clear, high‑dose approach to support energy production and cholesterol metabolism, which aligns with Life Extension’s strategic focus on precise nutrient formulations. This alignment, combined with Life Extension’s established reputation and stringent testing, made them the optimal partner for this supplement.