Transparent Labs PUMP
Outstanding
Overview
Transparent Labs PUMP is the gold standard for stimulant-free pre-workouts. Living up to their name, every ingredient and dose is fully disclosed on the label — no proprietary blends here. With 8g of citrulline, 4g of GlycerPump, and 2.5g of betaine, this formula is specifically engineered for maximum muscle pumps and vascularity without any caffeine. It’s perfect for evening workouts or caffeine-sensitive individuals who still want peak performance.
Key Ingredients
Full clinical dose for maximum nitric oxide production and vasodilation.
Patented glycerol powder for cellular hydration and sustained pumps.
Clinical dose for power output and osmolyte-driven cell volumization.
Supports hydration, reduces cramping, and aids recovery.
Beneficial addition for immune function and muscle recovery.
Pros & Cons
✅ Pros
Full 8g citrulline dose — no shortcuts
Zero caffeine — perfect for PM training
Fully transparent label, no proprietary blends
Excellent pump and vascularity
No artificial colours or preservatives
❌ Cons
Premium price point at £39.99
Only available online (not in UK shops)
No focus-enhancing ingredients
Taste is functional rather than delicious
Our Verdict
Transparent Labs PUMP is the best stimulant-free pre-workout available in the UK. The formula is meticulously dosed with clinical amounts of every key pump ingredient, and the full label transparency gives you complete confidence in what you’re consuming. If you train in the evening, are sensitive to caffeine, or simply want the best pump-focused supplement money can buy, this is it.
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