How to take Viagra and Cialis together
Viagra and Cialis should not be taken together. They work in similar ways as PDE5 inhibitors, and combining them can increase the risk of adverse side effects. This is primarily because using two drugs from the same class may intensify effects like low blood pressure and other serious reactions.
Key takeaways
Cialis (tadalafil) and Viagra (sildenafil) are both PDE5 inhibitors that increase blood flow to the penis.
Cialis can last up to 36 hours, while Viagra typically peaks within 30 minutes to two hours.
Combining PDE5 inhibitors increases the risk of hypotension, dizziness, and serious cardiovascular effects.
Comparing Cialis vs. Viagra |
||
|---|---|---|
| Feature | Cialis (tadalafil) | Viagra (sildenafil) |
| Drug class | PDE5 inhibitor | PDE5 inhibitor |
| Duration of effect | Up to 36 hours | Several hours |
| Typical dosing | As needed or once daily | As needed only |
| Can be taken together? | No | No |
| Key risk if combined | Increased side effects | Increased side effects |
Warnings and safety context
Both medications lower blood pressure and share similar drug interactions. Using them together may raise the risk of dangerously low blood pressure, fainting, heart attack, or stroke, especially in people with underlying heart conditions.
Want a deeper look? Read our full analysis: Cialis vs. Viagra: Differences, safety, and costs
Prescription resources
Medical disclaimer: This content is for general informational purposes only and does not constitute medical advice. Always consult your urologist or healthcare provider before making changes to your medication regimen.
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