H&B Vitamin B3 Niacin Tablets

Category: Energy + Nervous System Support

Servings: 120 (1 tablet daily)

Key Active: Niacin (as Nicotinamide – 100 mg, 625% NRV)

⚡ Quick Summary
Holland & Barrett’s Vitamin B3 supplement offers a straightforward, high-dose niacin (nicotinamide) formula aimed at supporting energy production, fatigue reduction, and nervous system health. It’s a simple, vegan-friendly option — but at 100 mg per tablet, it pushes far beyond typical dietary needs, risking mild flushing or tingling in sensitive users. A functional but heavy-handed supplement for energy and skin support, better suited to short courses than continuous use.

🧠 Necessity — 13 / 20
Niacin (Vitamin B3) is crucial for metabolism, energy release, and nervous system function. However, most people obtain sufficient B3 through diet (meat, eggs, grains, legumes). Supplementation is generally only necessary in cases of deficiency, high stress, fatigue, or poor diet. While it can be beneficial in specific wellness or energy-support stacks, it’s not essential for most users.

⚙️ Effectiveness — 16 / 20
The 100 mg dose (625% NRV) ensures robust B3 replenishment. Users may notice improved energy and reduced fatigue if previously low in niacin. Nicotinamide (the non-flushing form) avoids the harsh skin flushing associated with nicotinic acid. However, the benefits plateau quickly at lower doses, so 100 mg daily may be excessive for long-term use. Still, it delivers exactly what it claims — potent B3 support with reliable bioavailability.

🌿 Ingredients — 12 / 20
Minimal formulation but not pristine. The core active is good — pure nicotinamide — yet it’s padded with common tableting agents: microcrystalline cellulose, magnesium stearate, and silicon dioxide. These are harmless but non-functional, reducing purity points. The product is vegan and allergen-free, though not “clean-label.” A more refined product would eliminate unnecessary binders or use natural coating alternatives.

🛡️ Safety — 14 / 20
Generally safe for healthy adults at one tablet daily. Nicotinamide avoids the intense flushing typical of high-dose niacin, but 625% NRV daily is excessive for maintenance and may cause mild headaches or stomach discomfort in sensitive individuals. High doses of B3 are linked to liver strain when used long-term. Suitable for short-term energy support but should be cycled rather than taken continuously.

💷 Value — 17 / 20
At £11–£14 for 120 tablets, this delivers a 4-month supply at under 12p per serving — excellent value for potency. H&B’s brand markup is minor here, making it cost-effective for short-term supplementation. Still, cheaper generic equivalents exist with identical formulations. Good value for branded simplicity, but not a standout.

⭐ At a Glance

🧠 Necessity — 13 / 20 Useful for deficiency, not essential

⚙️ Effectiveness — 16 / 20 High-dose, fast-acting, potent

🌿 Ingredients — 12 / 20 Basic tablet with unnecessary fillers

🛡️ Safety — 14 / 20 Safe short-term, avoid prolonged overuse

💷 Value — 17 / 20 Good price-to-potency ratio

🔍 Key Takeaways

Pros
✔ High-dose niacin for strong energy and metabolism support
✔ Non-flushing nicotinamide form
✔ Vegan, allergen-free, and inexpensive
✔ Long-lasting 120-tablet supply

Cons
✖ Overdosed for long-term use (625% NRV)
✖ Contains standard bulking and anti-caking agents
✖ May cause mild side effects if taken daily for months
✖ Generic formula with limited additional benefits

⚖️ Verdict
A solid, no-nonsense vitamin for targeted use — ideal for tackling fatigue or topping up B3 levels after illness, dieting, or stress. Effective, affordable, and well-tolerated in the short term, but too high-dose for casual or ongoing use. Functional, not fancy.

🧭 Suppervised.com Final Score:

72 / 100

Comments: “Strong dose, low price, and reliable — but not an everyday essential. Best used periodically or for specific B3 support.”