Description
All the pump. None of the caffeine.
Most pre-workouts are built around stimulants. Caffeine hits fast, you feel wired, and then you crash. If you train in the evening, stack other caffeine sources, or just don’t want to depend on stimulants to perform — you need something different.
The Stinger is a fully stimulant-free pump pre-workout with 12 active ingredients at meaningful doses. 3,000 mg L-Citrulline, 3,200 mg Beta-Alanine, 3,000 mg Stabilised Glycerol — all in one 17 g serving. Every ingredient listed. No proprietary blends. No caffeine.
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Zero caffeine
No jitters, no crash, no stimulant dependency
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17 g per serving
12 active ingredients — every dose listed
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3,000 mg L-Citrulline
Nitric oxide support for serious pump
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3 flavours
Electric Red, Tropical Punch, Unflavoured
What’s in it and what each ingredient does
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Beta-Alanine — 3,200 mg
Buffers acid build-up in muscles during high-intensity sets. More reps before the burn forces you to stop. Research-backed dose — right in the effective 3–6 g daily range. Note: may cause temporary tingling on the skin — harmless and subsides over time.
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L-Citrulline (Free Form) — 3,000 mg
Converts to arginine in the kidneys, raising nitric oxide levels and widening blood vessels. Better blood flow means more oxygen to working muscles and a fuller, more vascular pump. Free form is more bioavailable than citrulline malate.
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Stabilised Glycerol Powder — 3,000 mg
Draws water into muscle cells (hyperhydration), increasing cell volume and enhancing the pump. Also supports endurance by improving fluid retention during exercise. Stabilised form prevents clumping — a common issue with cheaper glycerol powders.
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Betaine (40% Nitrate) — 2,500 mg
Supports power output, strength, and endurance. Also a methyl donor involved in homocysteine metabolism — relevant for cardiovascular health during heavy training. The nitrate form adds additional nitric oxide support on top of L-Citrulline.
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Arginine Silicate & Inositol — 1,500 mg
A patented compound that raises plasma arginine levels more effectively than standard arginine. Works alongside L-Citrulline for a combined nitric oxide effect. Inositol supports focus and mood during training.
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N-Acetyl-L-Tyrosine — 1,000 mg
A highly bioavailable form of tyrosine that supports dopamine and norepinephrine production — the neurotransmitters that drive focus, motivation, and mental drive during training. This is what replaces caffeine’s cognitive effect in a stim-free formula.
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L-Taurine — 1,000 mg
Supports muscle function, reduces exercise-induced oxidative stress, and helps regulate hydration within muscle cells. Works alongside glycerol for enhanced cellular hydration and reduced cramping.
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Choline Bitartrate — 500 mg
Supports acetylcholine production — the neurotransmitter responsible for the mind-muscle connection. Better acetylcholine levels mean sharper neuromuscular signalling, which translates to better muscle activation and coordination during lifts.
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Rednite™ (Beta Vulgaris) Extract — 500 mg
Beetroot extract standardised for nitrate content. A natural source of dietary nitrates that converts to nitric oxide in the body — adding another layer of vascular support on top of L-Citrulline and Betaine Nitrate.
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Himalayan Pink Salt — 300 mg
Replaces electrolytes lost through sweat. Sodium is critical for muscle contraction and nerve function — and is depleted faster than most people realise during intense training. Himalayan salt provides sodium alongside trace minerals.
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Maritime Pine Bark Extract — 150 mg
Standardised to 95% proanthocyanins — powerful antioxidants that support nitric oxide production and blood vessel health. Reduces exercise-induced oxidative stress and supports circulation for a sustained pump throughout the session.
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BioPerine™ (Black Pepper Extract) — 5 mg
Clinically studied absorption enhancer standardised to 95% piperine. Increases bioavailability of the other ingredients — the same reason it’s in Shred Mode and Testo Pro. A formula with 12 ingredients works significantly better when they’re properly absorbed.
Works well for
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Evening trainers
No caffeine means no disrupted sleep after a late session. Get the full pre-workout benefit without paying for it at midnight.
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People who already drink coffee
If you’ve had coffee before training and don’t want to stack stimulants, The Stinger gives you the pump and performance support without adding more caffeine on top.
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People sensitive to stimulants
Caffeine causes anxiety, elevated heart rate, or crashes in some people. The Stinger delivers serious performance support without any of those effects.
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Anyone chasing a serious pump
Three overlapping nitric oxide pathways — L-Citrulline, Betaine Nitrate, and Rednite™ — plus Glycerol for cellular hydration. This is one of the most pump-focused formulas available in the UK market.
Product highlights
- 12 active ingredients — every dose fully listed
- 17 g per serving (2 scoops)
- Zero caffeine — stimulant free
- No proprietary blends
- Lab tested. UK made. Transparent label.
- Flavours: Electric Red, Tropical Punch, Unflavoured
Nutritional information
Per 17 g serving (2 scoops):
| Ingredient | Per serving (17 g) |
|---|---|
| Beta-Alanine | 3,200 mg |
| L-Citrulline (Free Form) | 3,000 mg |
| Stabilised Glycerol Powder | 3,000 mg |
| Betaine (Trimethyl Glycine, 40% Nitrate) | 2,500 mg |
| Arginine Silicate & Inositol Compound | 1,500 mg |
| N-Acetyl-L-Tyrosine | 1,000 mg |
| L-Taurine | 1,000 mg |
| Choline Bitartrate | 500 mg |
| Rednite™ (Beta Vulgaris) Extract | 500 mg |
| Himalayan Pink Salt | 300 mg |
| Maritime Pine Bark Extract (95% proanthocyanins) | 150 mg |
| BioPerine™ (Black Pepper Extract, 95% piperine) | 5 mg |
How to use
🏋️ Advanced users
Mix 2 scoops (17 g) with 300–400 ml of cold water. Take 20–30 minutes before training.
🌱 Beginners
Start with 1 scoop to assess tolerance — particularly for the Beta-Alanine tingling. Increase to 2 scoops once comfortable.
Not intended for persons under 18. Not suitable during pregnancy. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied diet. Keep out of reach of children. Store in a cool, dry place.
12 ingredients. Every dose visible. Zero caffeine. Maximum pump.
Choose your flavour. Add to basket.
Glen R. –
This is the second one I have purchased. This supplement is good in that it gives me enough of a boost, without feeling jittery. On some mornings I am up very early to get to the gym, so one small scoop of this roughly 15-20 mins before my workout is enough to get me through my hour-long workout without any ill effects afterward.