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Orders placed before 4 pm are shipped on the same day
Plasma Boost by ATS Labs is a hard-hitting non-stimulant pre-workout designed for athletes who want to maximise pump, blood flow, and hydration — without relying on caffeine. Whether you’re training late, cycling off stimulants, or stacking with a stim-heavy formula, this product delivers serious support for fullness, volume, and endurance. The formula is built around generous clinical doses, with thoughtful additions that take it beyond the usual pump product.
Plasma Boost is ideal for:
Our opinion
We were genuinely surprised by how strong this formula hits for a non-stimulant. The pump comes on quickly and holds throughout the session, and the muscle fullness is real, not just a marketing claim. It stacks perfectly with high-stim pres but also works great on its own. For anyone looking to cut out caffeine without cutting back performance, this is one of the better formulas we’ve tested in a long time.
Plasma Boost by ATS Labs is a hard-hitting, non-stimulant pre-workout designed to maximise pump, blood flow, and hydration without caffeine. Each full serving is 2 scoops (22g), built around clinical doses of key pump ingredients.
No. Plasma Boost is completely stimulant-free, making it ideal for evening training, stim-sensitive individuals, those cycling off caffeine, or athletes stacking it with a stimulant-based pre-workout.
Plasma Boost is formulated to support maximum pump, blood flow, intracellular hydration, muscle fullness, and endurance. The formula uses clinical doses to deliver meaningful pump and volume support beyond the standard non-stim pre-workout.
Plasma Boost contains a substantial 10,000mg of pure L-Citrulline per full 2-scoop serving. This is a high dose well above standard pump formulas, designed to maximise nitric oxide production, blood flow, and muscle fullness.
Plasma Boost contains 2,000mg of Glycerol Powder (65% yield) per serving. Glycerol supports intracellular water retention, keeping muscles hydrated and full throughout training, which can also help improve endurance and reduce the sensation of fatigue.
In addition to L-Citrulline and Glycerol, Plasma Boost contains Agmatine Sulfate and other supporting pump compounds to further enhance nitric oxide signalling, vasodilation, and the overall pump experience during training.
Take 2 scoops (22g) mixed with water before training for the full serving dose. It can be used as a standalone pump pre-workout or stacked with a stimulant-based formula for a comprehensive pre-training stack.
Yes. As a stimulant-free formula, Plasma Boost is specifically designed to be stackable with caffeine-containing pre-workouts. Adding it to a stim-heavy product enhances pump and hydration without increasing the stimulant load.
Plasma Boost suits evening trainers, stim-sensitive users, athletes cycling off caffeine, and those who want to build a multi-product pre-workout stack. It also works well for anyone prioritising pump, hydration, and muscular volume over energy stimulation.
ATS Labs Plasma Boost is available through Cross The Limits, an authorised UK retailer. Orders placed before 4pm are dispatched the same day, with free UK shipping on orders over £89.
ATS Labs is built for lifters who have already done the basics and need something more targeted. If you are eating well, training hard, and still hitting the same ceiling, the problem is usually specificity: your supplements are not matched closely enough to the demands of your training.
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