Niacinamide capsules fuel your body with high strength vitamin B3 to help skin health, joint comfort, and daily vitality, all while staying gentle and easy on the stomach. This single ingredient capsule keeps the focus on what matters and reliable daily support for energy, skin and joints. Douglas Laboratories stands for purity and quality you can trust.

Available Sizes & Variants:

100 capsules - Daily support for skin, joints and energy.

Benefits & Features:

• Supports skin barrier and general skin health.
• Helps joint comfort by supporting cartilage health.
• Promotes steady energy production for daily vitality.
• Well tolerated form minimises discomfort, making it easier to take daily with meals, while supporting glucose metabolism and antioxidant processes that help protect cells inside your body.
• Produced by Douglas Laboratories, a trusted brand in the vitamin b3 niacin family, this product reflects purity and potency through strict manufacturing standards.

Douglas Laboratories has built its reputation on science led formulations and tight quality controls. This niacinamide capsule is gluten free and non-GMO, with gelatin capsules and inactive ingredients such as microcrystalline cellulose and vegetable stearate. Each bottle holds 100 capsules. The brand states it sticks to the strictest standards for purity and potency, using the highest grade ingredients available, so you can trust what’s in every capsule. If you’re weighing options, niacin riboside is another B3 form shoppers sometimes consider.

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.

2 capsules per day or as directed by your physician.

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

1. Supports Healthy Skin: Niacinamide, also known as vitamin B3, is a key nutrient for maintaining healthy skin. It helps to improve skin barrier function, reduce redness and inflammation, and even out skin tone.
2. Boosts Brain Function: Niacinamide has been shown to support healthy cognitive function by improving blood flow and oxygen delivery to the brain. This can help with memory, concentration, and overall brain health.

The Active Ingredient Is: Niacinamide (Vitamin B3)

Niacinamide is basically a form of vitamin B3, and it acts as a key coenzyme precursor in energy production and cellular repair. This product provides a simple, single-ingredient capsule containing niacinamide in its active form, a nutrient essential for normal metabolism and skin and joint support.

This form is a direct, well-tolerated source of vitamin B3, and the product uses inert ingredients typical for usual supplement capsules to deliver this ingredient in a pure, single-ingredient format.

What Does Niacinamide Do?

Niacinamide plays a role in energy production and cellular maintenance, and is involved in skin barrier function and joint health, according to established nutritional science. Scientific research suggests these roles align with EFSA guidance on vitamin B3 activity and metabolism.

Dr. Draelos of Johns Hopkins University found that niacinamide supports skin barrier function, which is a key demonstration of its biological activity in human tissues.

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

Douglas Laboratories stands out from other manufacturers as a professional-grade brand trusted by healthcare professionals and widely recognised in practitioner channels for its scientific formulation and emphasis on purity. This brand’s reputation rests on a long-standing commitment to high-quality ingredients and rigorous manufacturing standards, which makes it a natural fit for Welzo's evidence-led selection process.

What sets Douglas Laboratories apart is its clear focus on purity and potency, described as sticking to the strictest standards for these qualities and using high-grade ingredients. This aligns with Welzo’s standards for rigorous product evaluation and safety, which you can explore through the standards we enforce.

For this Niacinamide product, Douglas Laboratories delivers a single-ingredient, well-tolerated formulation, chosen because the brand consistently prioritises manufacturing excellence and reliable quality, a combination that supports Welzo’s product-curation approach. Our team of experts reviewed the brand against our vetting criteria, ensuring alignment with our commitment to credibility and safety, alongside our our expert team of doctors, nurses, and nutritionists.