Always inform your doctor about all medications you’re taking, including over-the-counter drugs, herbal supplements, and recreational drugs. This includes nitrates, often used for chest pain. Combining Viagra with nitrates can cause a dangerous drop in blood pressure.
Specific Medication Interactions
Alpha-blockers: These medications, used to treat high blood pressure and enlarged prostate, can interact with Viagra, potentially leading to dizziness or fainting. Your doctor may adjust your dosages or suggest alternatives.
Blood thinners: While not a direct contraindication, using Viagra with blood thinners increases the risk of bleeding. Monitor for any unusual bleeding and report it to your healthcare provider immediately.
CYP3A4 inhibitors: Medications that inhibit the CYP3A4 enzyme (like ketoconazole and ritonavir) can increase Viagra’s levels in your blood, potentially increasing side effects. Your doctor may recommend a lower Viagra dose.
Other Important Considerations
Grapefruit juice: Avoid grapefruit juice while taking Viagra. It contains compounds that interact with the same liver enzymes as Viagra, resulting in elevated blood levels of the drug.
Alcohol: Excessive alcohol consumption can worsen Viagra’s side effects, such as dizziness and headaches. Moderate alcohol intake is generally acceptable, but it’s best to discuss this with your doctor.
This information is not exhaustive. Consult your physician or pharmacist for personalized advice based on your specific health situation and medications.
