Brand: USN - compare every USN product
From £9.99 across 4 UK retailers.
Categories: Endurance Fuel, Pre-Workout (Stim), Caffeine, BCAA, Powder
Serving size: 11 g
USN BCAA powder delivers a complete blend of leucine, isoleucine, valine, glutamine, citrulline and vitamin B6 in a flavored, mixable format sold in multiple 400 g flavours.
+ All key amino‑acid doses are fully disclosed, offering clear transparency. + Includes 5 mg Bioperine per serve to support nutrient absorption. + Provides 500 mg L‑citrulline (as citrulline malate in the Blue Raspberry flavour). + Mid‑range price tier across the 400 g range, with larger packs generally giving better value.
- Contains artificial sweeteners (sucralose, acesulfame‑K). - Includes colourants and anti‑caking agents, which some users may wish to avoid.
The USN line stands out in its category by pairing a full BCAA profile with added L‑citrulline and Bioperine, and by disclosing every active dose—a rarity among similar powders. Both Tangerine and Blue Raspberry share the core amino‑acid blend and sweetener base, but the Blue Raspberry variant uniquely incorporates L‑citrulline malate, while the Tangerine version adds colourants not present in the other flavour. All variants use anti‑caking agents to improve mixability.
| Retailer | Price | Availability | Link |
|---|---|---|---|
| I Wonder What's Next | £9.99 | In stock | View |
| Nutricircle | £13.98 | In stock | View |
| London Supplements | £22.99 | Out of stock | View |
| The Box Supplements | £23.99 | Out of stock | View |