Always inform your doctor about all medications you are taking, including over-the-counter drugs, herbal supplements, and vitamins, before starting Cialis. This includes nitrates, commonly used to treat chest pain (angina). Combining these can cause a dangerous drop in blood pressure.
Alpha-blockers, frequently prescribed for high blood pressure or enlarged prostate, may interact and increase the risk of low blood pressure when taken with Cialis. Your doctor might adjust your dosages or suggest alternatives.
Certain antifungal medications, such as ketoconazole and itraconazole, can increase Cialis levels in your blood, potentially leading to side effects. Discuss this with your doctor to manage potential risks.
Cimetidine, a medication for ulcers and heartburn, can also affect Cialis metabolism, possibly resulting in higher blood levels. Your healthcare provider can help determine the safest approach.
Grapefruit juice can also interfere with Cialis metabolism, increasing its concentration in the body. Avoid grapefruit juice while taking Cialis.
This list isn’t exhaustive. Consult your doctor or pharmacist for a complete list of potential drug interactions and to ensure safe medication use.


