Both sildenafil and tadalafil are generally well-tolerated. Most side effects are mild and temporary. Understanding potential side effects helps you make an informed decision about treatment.
| Side Effect | Sildenafil | Tadalafil |
|---|---|---|
| Headache | Common (10-15%) | Common (10-15%) |
| Flushing | Common | Less common |
| Upset stomach | Common | Common |
| Nasal congestion | Common | Less common |
| Back pain | Rare | Common (5-10%) |
| Muscle aches | Rare | Common |
| Vision changes | Uncommon | Rare |
| Dizziness | Uncommon | Uncommon |
Most men experience no side effects or only mild ones that resolve within a few hours. If side effects persist or become bothersome, contact your healthcare provider.
Blood pressure medications including nitroglycerin, isosorbide dinitrate, and others. Combining with ED meds can cause dangerous blood pressure drops.
May enhance blood pressure lowering effects. Monitor closely and adjust doses as needed.
Certain antifungal medications (ketoconazole, itraconazole) can increase ED medication levels in blood.
Some HIV medications can interact with ED drugs. Your clinician will determine safe dosing.
During your consultation, provide complete information about all medications, supplements, and health conditions. This ensures our clinicians can safely prescribe the right treatment for you.
Only use telemedicine services that require a licensed clinician review. Never skip the medical consultation.
Only purchase FDA-approved generic medications from licensed pharmacies. Avoid foreign equivalents or "herbal" alternatives.
Seek emergency care if you experience: chest pain, severe dizziness, nausea, vision loss, or an erection lasting more than 4 hours (priapism).
Never take more than one dose per day. Taking excessive amounts increases side effect risk without improving effectiveness.
Our licensed clinicians are available to discuss any concerns about medication safety, interactions, or side effects.