Pump boosters for your strength training: compare powders and capsules from GN Laboratories, Gods Rage, Big Zone and Dedicated by formula and amount per serving. Whether you want to avoid caffeine, choose pure L-citrulline instead of citrulline malate or skip mixing a drink, these are the differences that matter when making your choice.
Pump boosters are pre-workout supplements taken before training. They often contain citrulline, arginine or glycerol and are also known as NO boosters. The names alone do not tell you the full formula or whether a product contains caffeine.
“Pump” does not automatically mean “caffeine-free”. Check the plant extracts too. Caffeine-free and free from all stimulants are not the same thing. If you train in the evening and want to avoid caffeine, Narc Pump, Fenrir White Pump and Bloodstorm 2.0 are options. You can find the broader selection of products to take before exercise in our workout supplements.
When comparing products, focus on the ingredient form and amount per serving. Citrulline malate contains both citrulline and malate, a component of malic acid. The stated amount is therefore not equivalent to the same amount of pure L-citrulline. L-arginine also comes in different compounds, such as hydrochloride, abbreviated to HCl, or nitrate. Narc Pump and Fenrir White contain L-citrulline malate and L-arginine hydrochloride; Bloodstorm combines citrulline DL-malate with arginine nitrate.
| Product | Powder per serving | Citrulline compound | Arginine compound |
|---|---|---|---|
| Narc Pump | 23 g | 6,000 mg citrulline malate | 4,000 mg arginine HCl |
| Fenrir White Pump | 26 g | 8,000 mg citrulline malate | 4,000 mg arginine HCl |
| Bloodstorm 2.0 | 20 g | 6,400 mg citrulline DL-malate 2:1 | 3,000 mg arginine nitrate |
The milligram amounts refer to the compounds listed, not to pure citrulline or arginine in each case. A higher number alone therefore does not tell you which formula suits you better.
Unstoppable Pump, by contrast, contains 6,000 mg of L-citrulline per 13.5 g of powder. The suggested use specifies 13.5 g or 27 g of powder. The 6,000 mg refers to the smaller serving.
Glycerol also deserves a closer look. Narc Pump and Bloodstorm each contain 2,000 mg of glycerin powder per serving, while Fenrir White contains 1,500 mg. The glycerin powder in Narc Pump contains silicon dioxide as a carrier alongside glycerin. The 2,000 mg of glycerin powder is therefore not equivalent to 2,000 mg of pure glycerin. All three formulas also include taurine. Always compare the complete formula, rather than just one ingredient.
You mix the powders with water. Flavour options vary by product: Narc Pump comes in Blood Orange and Red Berries, Fenrir White in Orange and Sour Bulls, and Bloodstorm 2.0 in Peach. These three powders contain sweeteners.
If you do not want to mix a drink, capsules are an option. Vaso Grow combines betaine nitrate with grape seed and pine bark extracts. The form of betaine also differs: Unstoppable Pump contains anhydrous betaine instead of betaine nitrate. Choose the formula you want first, then the format. Capsules are not simply the same powder blend without water.
The amount of powder and water you need for your drink, and when to take it before your training session, depend on the product:
Weigh the powder if you want to measure the gram amount accurately. Scoops differ between products. Also follow the full instructions on your tub; the directions for one booster do not automatically apply to another.
