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 per day
Stress & cortisol reduction
☀️ Vitamin D3
2,000 IU per day
Energy & immune support
💧 Omega-3 (EPA+DHA)
1,000 mg per day
Heart & brain health
⚡ Zinc bisglycinate
15 mg per day
Immunity & testosterone
My week-by-week experience
Week 1–2
No big changes yet
Easy to swallow, no digestive issues. Took it with breakfast as recommended.
Week 3–4
Energy started shifting
Noticeably less mid-afternoon fatigue. I stopped reaching for my 3pm coffee most days.
Week 5–6
Sleep quality improved
Waking up more refreshed each morning. Mood felt more even and stable.
Week 7–12
Effects held steady
No diminishing returns. Consistent improvement. Still taking it — 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 used
- 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. The ingredient quality is clearly better.”
— James T., Manchester · Verified purchase · 4 months use
★★★★★
“Sceptical at first — but the 60-day guarantee convinced me to try. By week 4, my sleep quality was noticeably better. Renewed my subscription without hesitation.”
— Emma W., Edinburgh · Verified purchase · 6 months use
★★★★☆
“Solid product. Takes patience — don’t expect results in week one. But once it kicks in, it’s consistent. Wish it were a bit cheaper, but the quality justifies it.”
— David K., Bristol · Verified purchase · 3 months use
Frequently asked questions
✓ Now available · Free UK delivery
from £34.90 / month
Free delivery · 60-day money-back guarantee · Cancel anytime
Most customers order a 3-month supply to see full results — that’s the recommended trial period.
✓ 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, and do not replace a balanced diet. 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.