Side-by-side comparison
Pick two or three substances to compare user results, effects, side effects and research.
| Modafinil Medication | Caffeine Substance | |
|---|---|---|
| User score | 46 | 52 |
| Verdict | Mixed | Mixed |
| Reports | 551 | 761 |
| Research | AResearch: Strong | AResearch: Strong |
| Meta-analyses / RCTs | 155 / 297 | 680 / 2,072 |
| Mainly used for | FocusEnergyMood | EnergyFocusAnxiety |
| Weight loss % reporting improvement | 100% (3) | — |
| Focus % reporting improvement | 90% (249) | 84% (229) |
| Energy % reporting improvement | 94% (158) | 83% (305) |
| Sleep % reporting improvement | 21% (39) | 16% (74) |
| Anxiety % reporting improvement | 21% (33) | 19% (120) |
| Mood % reporting improvement | 57% (56) | 70% (74) |
| Memory % reporting improvement | 85% (13) | 64% (14) |
| Performance % reporting improvement | 80% (10) | 95% (20) |
| Digestion % reporting improvement | — | 33% (3) |
| Libido % reporting improvement | 20% (5) | — |
| Heart & lipids % reporting improvement | 0% (2) | 0% (4) |
| Common side effects | insomnia, anxiety, headache, tolerance | anxiety, jitteriness, insomnia, headache |
| Typical dose reported | as needed | 100-150 mg / daily |