Always inform your doctor about all medications you’re taking, including over-the-counter drugs, herbal supplements, and recreational drugs. This includes nitroglycerin or other nitrates for chest pain, as combining them with Viagra can cause a dangerous drop in blood pressure.
Certain medications for high blood pressure can interact negatively. Talk to your doctor if you use alpha-blockers (like terazosin or doxazosin), or medications to treat high blood pressure or an enlarged prostate.
Some antifungals (like ketoconazole or itraconazole) can increase Viagra’s levels in your blood, potentially leading to side effects. Similarly, protease inhibitors used to treat HIV can increase Viagra’s concentration.
Consult your doctor before combining Viagra with medications that affect liver function, as this can alter Viagra’s metabolism and increase the risk of side effects. This includes many antibiotics and some other prescription drugs.
| Nitrates | Dangerous blood pressure drop | Avoid combining with Viagra. |
| Alpha-blockers | Increased risk of low blood pressure | Inform your doctor before taking Viagra. |
| Antifungals (ketoconazole, itraconazole) | Increased Viagra levels in blood | Discuss alternative treatment options with your doctor. |
| Protease Inhibitors | Increased Viagra levels in blood | Discuss dosage adjustments with your doctor. |
| Medications affecting liver function | Altered Viagra metabolism | Inform your doctor about all medications you are taking. |
This information is not exhaustive. Always seek professional medical advice before starting or stopping any medication.
