Advertisement / Sponsored content Updated 14 May 2026
Sophie Clarke
Health & wellness writer · London · Tested for 90 days · Verified purchase
My honest, unfiltered review
I tried NutriBoost for 3 months — here’s what actually happened
More energy, better sleep, fewer cravings? I tested every claim myself so you don’t have to guess.
Based on my personal 90-day trial
“After three months with NutriBoost, the difference in my daily energy levels is real and consistent. It’s not a miracle — but it genuinely works.”
— Sophie C., tested since February 2026
I’ll be honest: I was sceptical. Supplements in the UK are a crowded market and most don’t justify the price. But NutriBoost caught my attention because of its ingredient transparency — and after 90 days, I’m convinced it’s one of the few that actually delivers.
The formula combines Vitamin D3, Ashwagandha KSM-66®, Omega-3 (EPA+DHA), and Zinc bisglycinate — all at clinically studied dosages. No proprietary blends hiding weak doses. No fillers.
What’s inside — key ingredients
| 🌿 Ashwagandha KSM-66® 600 mg/day Stress & cortisol reduction | ☀️ Vitamin D3 2,000 IU/day Energy & immune support | |
| 💧 Omega-3 (EPA+DHA) 1,000 mg/day Heart & brain health | ⚡ Zinc bisglycinate 15 mg/day Immunity & testosterone |
My week-by-week experience
W1 | Week 1–2 No dramatic changes yet. Easy to swallow, no digestive issues. Took it with breakfast as recommended. |
W3 | Week 3–4 Noticeably less mid-afternoon fatigue. I stopped reaching for my 3pm coffee most days. |
W6 | Week 5–6 Sleep quality improved significantly. Waking up more refreshed. Mood felt more even too. |
W12 | Week 7–12 Effects plateaued but held steady. No diminishing returns. Still taking it and planning to continue. |
Pros & cons
✓ What I liked ✓ No artificial additives or fillers ✓ UK-compliant, EU-certified production ✓ Noticeable effects from week 3 ✓ 60-day money-back guarantee ✓ High bioavailability forms ✓ Full ingredient transparency | ✕ Worth noting ✕ Premium price point ✕ Online-only purchase ✕ Large capsule size ✕ Results vary individually ✕ Takes 3–4 weeks to kick in |
My scores by category
How it compares
What other UK customers say
“I’ve tried five different supplements this year. NutriBoost is the only one where I genuinely notice a difference if I stop taking it.”
— James T., Manchester · Verified purchase · 4 months use“Sceptical at first — but the 60-day guarantee convinced me. By week 4, my sleep quality was noticeably better.”
— Emma W., Edinburgh · Verified purchase · 6 months use“Solid product. Takes patience — don’t expect results in week one. Once it kicks in, it’s consistent.”
— David K., Bristol · Verified purchase · 3 months useFrequently asked questions
from £34.90 / month
Free delivery · 60-day money-back guarantee · Cancel anytime
Most customers order a 3-month supply to see full results.
✓ GMP certified · ✓ Free UK delivery · ✓ Secure checkout · ✓ Vegan & GMO-free · ✓ Cancel anytime
* This article contains sponsored content in accordance with the UK CAP Code and ASA guidelines. The views expressed are the author’s own, based on personal experience. Food supplements are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. Always consult a healthcare professional before starting a new supplement. Under the Consumer Contracts Regulations 2013, you have the right to cancel within 14 days of purchase.