SKULL LABS® Skull Crusher is the hardcore stim pre Skull Labs built when the brief was simple: more pump than a soft daily sipper, with a real caffeine charge so the session hits from the first warm-up — not an energy-drink compromise with a sprinkle of citrulline on top.
Brand positioning is blunt. The launch put Skull Crusher in the pump-first lane next to the brand’s other stim stacks — more actives aimed at muscle pumps, led by a serious citrulline malate load. Retail copy sells the same pitch: explosive energy, massive pumps, intense focus. If you’re done with underdosed “pre” powders that taste loud and train quiet, this is the other tub.
Every ~1 scoop (8.75 g) stacks the training core the label actually prints: 3000 mg citrulline malate (2000 mg citrulline), 1600 mg beta-alanine, 1000 mg taurine and 600 mg betaine. Focus sits on the same scoop — 400 mg L-tyrosine, 250 mg choline bitartrate and 200 mg GABA — the mental-sharpness trio retailers call out beside the pump matrix.
Drive is a straight 200 mg caffeine hit per scoop. Label daily intake runs up to 2 scoops (17.5 g / 400 mg caffeine) when you want the full hardcore charge the brand headlines — with niacin (5 mg NE, 31% NRV) and vitamin B6 (1.4 mg, 100% NRV) contributing to normal energy-yielding metabolism and the reduction of tiredness and fatigue. About 40 servings in the 350 g tub at the 8.75 g scoop.
Mix with 150–200 ml water. One serve in the morning, one ~30 minutes before training. Crush the session. Leave the underdosed pre on the shelf.
Ideal For
- Adults seeking a caffeinated multi-ingredient pre-workout
- Strength and high-intensity training sessions
- Users who tolerate 200–400 mg caffeine around training
- Lifters who want pump actives and stim drive in one scoop
How to Use
- Shake the package well before use.
- Mix ~1 scoop of powder (8.75 g) with 150–200 ml of water.
- Drink 2 servings daily: one in the morning and one ~30 minutes before workout.
- Do not exceed 2 scoops (17.5 g) per day.
Contains caffeine (200 mg per 8.75 g serving; 400 mg per 17.5 g daily serving). Not recommended for children or pregnant women. Do not consume with other products that are sources of caffeine or ingredients with similar effects. The scoop facilitates portioning but does not guarantee precise dosing — prefer a scale.
Ingredients
Active / formula
| Citrulline malate | 3000 mg |
| Beta‑alanine | 1600 mg |
| Taurine | 1000 mg |
| Betaine | 600 mg |
| L‑tyrosine | 400 mg |
| Choline bitartrate | 250 mg |
| γ‑aminobutyric acid (GABA) | 200 mg |
| Caffeine | 200 mg |
| Niacin | 5 mg NE (31% NRV) |
| Vitamin B6 | 1.4 mg (100% NRV) |
Other ingredients
Anti‑caking agent (E551), acidity regulator (E500(ii)), flavourings, salt, red beet juice concentrate, black carrot concentrate, sweeteners (sucralose, acesulfame K, steviol glycosides from Stevia), colours (E160a, E104, E132).
May contain cereals containing gluten, crustaceans, eggs, fish, peanuts, soybeans, milk, nuts, celery, mustard, sesame seeds, sulphur dioxide and sulphites, lupin and molluscs.
Ingredients may vary depending on flavour. Always check the product packaging. Flavours: Mango-Maracuja, Citrus-Peach, Lychee, Dragon Fruit, Blue Raspberry, Grape, Sour Watermelon, Mango-Lemon, Orange-Mango, Fruit Massage, Blackberry-Pineapple, Red Fruit Punch. E104: May have an adverse effect on activity and attention in children.
Supplement Facts
| Citrulline malate | 3000 mg |
|---|---|
| of which citrulline | 2000 mg |
| Beta-alanine | 1600 mg |
| Taurine | 1000 mg |
| Betaine | 600 mg |
| L-tyrosine | 400 mg |
| Choline bitartrate | 250 mg |
| of which choline | 102.5 mg |
| γ-aminobutyric acid (GABA) | 200 mg |
| Caffeine | 200 mg |
| Niacin | 5 mg NE (31% NRV) |
| Vitamin B6 | 1.4 mg (100% NRV) |
Warnings
Do not use if you are allergic to any of the product compounds. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied diet. A varied and balanced diet and a healthy lifestyle are recommended.
Do not use if pregnant or nursing. Keep out of the reach of young children. Do not exceed a dose of 400 mg of caffeine per day from all sources. Do not consume with alcohol. If you take medications, you should consult your doctor before you consume the product.
The measure included in the packet serves to facilitate portioning, but it does not guarantee precise dosing. It is advisable to use scales in order to measure out the exact amount. Shake the package well before use. This product is sold by weight not volume. Some settling of powder may occur during shipping and handling, which may affect density of powder. This product contains the serving indicated when measured exactly by weight.
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