Start with the Nexus brand and exact product name
“Nexus pre workout” needs a brand and version before it can support an ingredient comparison. This guide covers the Australian Nexus Nutrition pre-workout range: PER4M, PER4M 2.0 and the separately marketed non-stimulant AMP3D 2.0. It does not define a generic “Nexus-style” formula or assume every similarly named supplement is the same product.
Original PER4M: what the official listing confirms
The official Blue Sour Straps PER4M page identifies a caffeinated powder, and its product photograph shows a 400 g tub marked 50 serves. The ingredient list includes citrulline malate 2:1, beta-alanine, taurine, caffeine anhydrous, Alpha GPC 50%, theobromine and bitter-orange extract, among other ingredients.
A complete quantitative panel was not displayed in that page’s nutritional-facts section during this review. Consequently, this guide does not assign original PER4M a caffeine amount or copy quantities from PER4M 2.0. The front-label arithmetic, 400 g divided by 50, is 8 g per advertised serve; that calculation alone does not establish the scoop instructions or any ingredient dose.
PER4M 2.0: the 50-serving claim needs its column
The official Cola Crush PER4M 2.0 page promotes 32 g quantities while also displaying 50 servings. Its manufacturer nutrition and composition image resolves the distinction: the 800 g container has 50 portions at 16 g or 25 at 32 g.
- 16 g, one scoop: 250 mg caffeine anhydrous, 5,000 mg L-citrulline, 2,500 mg beta-alanine and 1,500 mg creatine.
- 32 g, two scoops: 500 mg caffeine anhydrous, 10,000 mg L-citrulline, 5,000 mg beta-alanine and 3,000 mg creatine.
These are label comparisons, not instructions to use the larger portion. A comparison combining “50 servings” with the two-scoop ingredient figures would overstate how many of those portions the tub contains. The separate per-100-ml column is also not a scoop column.
Keep the caffeine-free option separate
Nexus identifies AMP3D 2.0 as a different caffeine-free product. That description does not make it an ingredient-for-ingredient substitute for PER4M. Confirm its own flavor-specific panel instead of deleting caffeine from another formula on paper.
What to check before comparing products
Record the complete brand name, version, flavor, net weight, country of sale and gram-based serving. Ask for the actual package label if a seller’s description combines versions or leaves quantities unclear. Match every number to the same serving column before comparing caffeine or container value.
The FDA’s caffeine guidance notes substantial differences in individual sensitivity. The 500 mg two-scoop figure exceeds its 400 mg daily reference for most adults; that reference is not a personal target or clearance for a stimulant blend.
This is a label-based identification guide. Manufacturer energy, focus and no-crash claims are not firsthand test results, and a larger ingredient list does not establish a better workout.
Product pages and existing offers
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Sources and review notes
Reviewed October 13, 2026. Nexus Nutrition pre-workout range. Nexus Nutrition original PER4M Blue Sour Straps. Nexus Nutrition PER4M 2.0 Cola Crush. Nexus Nutrition PER4M 2.0 quantitative label. Nexus Nutrition AMP3D 2.0 range. FDA caffeine guidance. This is editorial guidance based on identified labels and sources, not a report of personal product testing. Product versions and offers can change.
