Always inform your doctor about all medications you take, including over-the-counter drugs, vitamins, and herbal supplements. This helps avoid potentially dangerous interactions.
Nitrates: Combining Cialis with nitrates (found in some heart medications) can cause a dangerous drop in blood pressure. This combination is strictly prohibited.
Alpha-blockers: Concurrent use with alpha-blockers (used to treat high blood pressure and enlarged prostate) may significantly lower blood pressure, potentially leading to dizziness or fainting. Your doctor may adjust your dosage or prescribe alternatives.
CYP3A4 inhibitors: Medications that inhibit the CYP3A4 enzyme (like ketoconazole and ritonavir) can increase Cialis levels in your blood, potentially increasing side effects. Your doctor might recommend a lower Cialis dose.
CYP3A4 inducers: Conversely, medications that induce CYP3A4 (like rifampin and St. John’s Wort) can decrease Cialis effectiveness. Dosage adjustments may be necessary.
Alcohol: While moderate alcohol consumption usually doesn’t pose a significant problem, excessive alcohol can worsen Cialis side effects, particularly dizziness and low blood pressure.
Grapefruit juice: Avoid grapefruit juice while taking Cialis. It contains compounds that inhibit CYP3A4, leading to increased Cialis levels in the blood.
This information is not exhaustive. Consult your physician or pharmacist for a complete list of potential drug interactions and personalized advice. They can assess your individual health status and medication profile to ensure safe and effective Cialis use.
