AN Performance Pre Workout
vs Maximus Stim Pre Workout
Ingredient & Score Comparison
Last updated: Feb 2026
PwrRanks Verdict
Score Comparison
Objective scores based on ingredient dosing — 0 to 1 scale
AN Performance Pre Workout and Maximus Stim Pre Workout deliver similar performance per dollar — based on how both products compare to the broader pre-workout market.
Ingredient Comparison
AN Performance vs Maximus Stim — dosing per serving
| Ingredient | Objective | AN Performance | Maximus Stim |
|---|---|---|---|
| Caffeine Yield | Energy | 302mg | 305mg |
| Theacrine | Energy | — | 63mg |
| L-Citrulline | Pump | 6g | 6g |
| Betaine Anhydrous | Pump | 2.5g | 1.5g |
| Taurine | Pump | 2g | 1g |
| Agmatine | Pump | — | 500mg |
| Sodium | Pump | — | 250mg |
| L-Tyrosine | Focus | 1.5g | 1g |
| Citicoline | Focus | 500mg | — |
| Alpha-GPC | Focus | — | 300mg |
| Huperzine | Focus | — | 100mcg |
| L-Ornithine HCl | - | 4g | — |
| Beta-Alanine | - | 3.2g | 3.2g |
| L-Carnitine L-Tartrate | - | — | 1g |
| PeakO2 | - | — | 1g |
| EndoFlo | - | — | 200mg |
| ElevATP | - | — | 150mg |
| Methyliberine | - | — | 125mg |
Who Should Buy Each
Matching products to training goals and stim tolerance
Choose AN Performance If…
- No strong differentiators for this product in this comparison.
Choose Maximus Stim If…
- ✓You want sharp mental focus that lasts through the full session
- ✓Mind-muscle connection is as important to you as raw energy
Frequently Asked Questions
Common questions about these two pre-workouts
They're tied — both have 304mg total caffeine per serving.
More Comparisons
How PwrRanks Scores Pre-Workouts
Our methodology
PwrRanks scores every pre-workout by analyzing its ingredient label algorithmically. We generate four objective scores — Energy, Pump, Focus, and Value — that reflect what's in the tub, not how the product is marketed. Value scores are calculated using live pricing data to reflect real cost-per-serving at time of comparison.