IR8 Pre Workout
vs Kratos Pre Workout
Ingredient & Score Comparison
Last updated: Feb 2026
PwrRanks Verdict
Score Comparison
Objective scores based on ingredient dosing — 0 to 1 scale
Kratos Pre Workout's formula has 6g L-Citrulline and 1g Agmatine, which contribute to a higher pump score.
Kratos Pre Workout's formula has 500mg DMAE and 350mg L-Theanine, which contribute to a higher focus score.
IR8 Pre Workout and Kratos Pre Workout deliver similar performance per dollar — based on how both products compare to the broader pre-workout market.
Ingredient Comparison
IR8 vs Kratos — dosing per serving
| Ingredient | Objective | IR8 | Kratos |
|---|---|---|---|
| Caffeine Yield | Energy | 306mg | 350mg |
| DMHA | Energy | 50mg | 200mg |
| DMAA | Energy | 80mg | 100mg |
| Yohimbine HCl | Energy | 2mg | — |
| L-Citrulline | Pump | 2.3g | 6g |
| L-Citrulline Malate | Pump | 2.3g | — |
| Agmatine | Pump | 500mg | 1g |
| Taurine | Pump | — | 500mg |
| DMAE | Focus | — | 500mg |
| L-Theanine | Focus | — | 350mg |
| Alpha-GPC | Focus | — | 200mg |
| Huperzine | Focus | — | 350mcg |
| Beta-Alanine | - | 3g | 3g |
| Creatine HCl | - | 1g | — |
| Epicatechin | - | 100mg | — |
| Higenamine | - | 45mg | — |
| Synephrine HCl | - | 20mg | — |
| Hordenine | - | 20mg | — |
Who Should Buy Each
Matching products to training goals and stim tolerance
Choose IR8 If…
- No strong differentiators for this product in this comparison.
Choose Kratos If…
- ✓You want sharp mental focus that lasts through the full session
- ✓You want the edge taken off stimulant intensity — focused without feeling wired
- ✓Pump and vascularity are a priority in your training
Frequently Asked Questions
Common questions about these two pre-workouts
Kratos Pre Workout has 350mg total caffeine per serving compared to 306mg in IR8 Pre Workout.
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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.