Caffeine may blunt some creatine effects
An older study suggested caffeine could interfere with creatine's performance benefits, though more recent research is mixed. Any effect is likely modest and dose-dependent. Both are widely co-supplemented in pre-workouts without obvious problems.
If you want to be conservative, take creatine post-workout and caffeine pre-workout. For most people co-timing is fine.
Optional: space 2+ hours apart
Caffeine may blunt some creatine effects. If you want to be conservative, take creatine post-workout and caffeine pre-workout. For most people co-timing is fine.
Optional: space 2+ hours apart
This interaction is rated “Caution” by Formulate. An older study suggested caffeine could interfere with creatine's performance benefits, though more recent research is mixed. Any effect is likely modest and dose-dependent. Both are widely co-supplemented in pre-workouts without obvious problems.
The free checker lets you add any combination of supplements and medications at once. Formulate's desktop app goes further — every stack change surfaces interaction alerts automatically.
Medical disclaimer. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.