Assassin Pre Workout
vs OMMI Pre Workout
Ingredient & Score Comparison
Last updated: Feb 2026
PwrRanks Verdict
Score Comparison
Objective scores based on ingredient dosing — 0 to 1 scale
OMMI Pre Workout delivers more performance per dollar than Assassin Pre Workout — based on how both products compare to the broader pre-workout market.
Ingredient Comparison
Assassin vs OMMI — dosing per serving
| Ingredient | Objective | Assassin | OMMI |
|---|---|---|---|
| Eria Jarensis | Energy | 600mg | — |
| Theobromine | Energy | 600mg | 500mg |
| Caffeine Yield | Energy | 600mg | 388mg |
| Alpha Yohimbine | Energy | 3mg | 3mg |
| L-Citrulline | Pump | 10g | — |
| L-Citrulline Malate | Pump | — | 8g |
| Betaine Anhydrous | Pump | 5g | 2.5g |
| Glycerol | Pump | — | 2g |
| Taurine | Pump | — | 1g |
| Sodium | Pump | 200mg | 500mg |
| AstraGin | Pump | 50mg | — |
| L-Tyrosine | Focus | 5g | 2g |
| Alpha-GPC | Focus | 1g | 600mg |
| Acetyl L-Carnitine HCl | Focus | — | 1g |
| Huperzine | Focus | 400mcg | 200mcg |
| Beta-Alanine | - | 6.4g | 3.2g |
| Beta PEA | - | 750mg | — |
| Synephrine HCl | - | 120mg | 200mg |
| Juniper Berry Extract | - | — | 200mg |
| CognatiQ | - | 150mg | — |
| Vincamine | - | 20mg | — |
Who Should Buy Each
Matching products to training goals and stim tolerance
Choose Assassin If…
- ✓You want euphoric, mood-elevating formula
- ✓You want maximum intensity and train in the morning
Choose OMMI If…
- ✓You want a high energy formula without exotic stimulants
- ✓Pump and vascularity are a priority in your training
Frequently Asked Questions
Common questions about these two pre-workouts
Assassin Pre Workout has 600mg total caffeine per serving compared to 388mg in OMMI Pre Workout.
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.