Tadalafil vs. Sildenafil
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Tadalafil and sildenafil are both PDE5 inhibitors, but their pharmacokinetics differ significantly — making one a better fit than the other depending on your lifestyle and preferences.
Tadalafil's longer half-life makes it ideal for flexibility (or daily use). Sildenafil's shorter window makes it better for defined occasions. Efficacy is roughly equivalent — the choice is primarily about lifestyle fit.
Side-by-Side Comparison
| Feature | Tadalafil | Sildenafil |
|---|---|---|
| Half-life | ~17 hours | ~4 hours |
| Duration of effect | Up to 36 hours | 4–6 hours |
| Daily dosing option | Yes (2.5–5mg) | No |
| Interaction with food | Minimal | High-fat meals delay absorption |
Common Questions
Which has fewer side effects?
Both have similar side effect profiles. Headaches, flushing, and nasal congestion are the most common with both. Tadalafil is more commonly associated with back/muscle aches due to PDE11 inhibition.
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