Nexus PER4M - Sour Apple, 400g (50 Serves)

Nexus PER4M Blue Sour Straps is an 400g high stimulant pre-workout from Nexus, built for lifters who train hard and want a single scoop to cover energy, pumps and focus at once. Each 8g serve carries 200mg of caffeine alongside 3000mg of L-citrulline malate, and the 400g tub runs to 50 single scoops or 25 full 16g hardcore serves. It is aimed at anyone training sessions that demand more than a coffee can deliver.

How Nexus Pre-Workout works

The caffeine anhydrous in Nexus PER4M Blue Sour Straps is what most people notice first: it blocks adenosine receptors in the brain, which is the mechanism behind feeling more alert and less fatigued once a session gets underway. Layered under that is L-citrulline malate, the amino acid your body converts to L-arginine and then nitric oxide, which relaxes and widens blood vessels so more blood, oxygen and nutrients reach working muscle during a set.

Beta alanine plays a different role. It raises muscle carnosine levels over time, and carnosine buffers the acid that builds up in muscle tissue as reps add up, which is why lifters use it to push volume later into a session. Alpha GPC contributes choline, a precursor the brain uses to produce acetylcholine, the neurotransmitter tied to mind muscle connection and sustained concentration mid-set.

Why choose Nexus PER4M

Nexus PER4M Blue Sour Straps is dosed to be used, not just labelled. A few reasons it holds up against a lighter pre-workout:

• 200mg caffeine per 8g scoop, with a 400mg option in the 16g hardcore serve for lifters who have built tolerance.
• 1600mg beta alanine per serve, enough to support extra reps once fatigue usually sets in.
• Only 5 calories and 0.7g carbohydrate per 8g serve, so it slots into a cut without denting a calorie target.

The scoop-to-scoop consistency across all 50 serves in the tub means the same dose every session, not a guess.

Getting the most from it

Mix one 8g scoop of Nexus PER4M Blue Sour Straps with water around 20 to 30 minutes before you start lifting, giving the caffeine and citrulline time to take effect before your first working set. First-time users are better starting with a single 8g scoop before stepping up to the 16g hardcore serve, given how much caffeine that full dose carries. On heavier training blocks, some lifters pair it with a creatine from /collections/creatine for the strength side of the equation, or keep electrolytes from /collections/electrolytes on hand for longer sessions in the heat. If you are building a full stack, the wider /collections/pre-workout range covers other Nexus PER4M flavours alongside complementary aminos at /collections/amino-bcaa, so you can rotate flavours without changing what is actually in the scoop.

Nutrition per serving. Per serving (8g (1 scoop)): 0.5 g sugar. Key ingredients: Caffeine Anhydrous, L-Citrulline Malate, Beta-Alanine, Taurine, Tyrosine, Alpha-GPC. Flavour: Sour Apple.