Always inform your doctor about all medications you take, including over-the-counter drugs, supplements, and herbal remedies, before starting Cialis. This ensures your safety and helps prevent potential adverse effects.
Nitrates are strictly contraindicated. Combining Cialis with nitrates (found in medications for chest pain) can cause a dangerous drop in blood pressure.
Alpha-blockers, used to treat high blood pressure and enlarged prostate, can increase the risk of low blood pressure when taken with Cialis. Your doctor may need to adjust dosages or choose alternative medications.
Certain antifungal medications, such as ketoconazole and itraconazole, can increase Cialis levels in your blood, potentially leading to side effects. Your doctor might recommend a lower Cialis dose.
CYP3A4 inhibitors, a class of drugs that affect how your liver processes medications, can also elevate Cialis blood levels. Examples include ritonavir and erythromycin. Close monitoring and potential dose adjustments are necessary.
Grapefruit juice inhibits the same liver enzymes, so avoid consuming it while taking Cialis. This can lead to elevated Cialis concentrations and increased side effects.
This information is not exhaustive. Consult your doctor or pharmacist for a complete list of potential drug interactions and personalized advice.


