Always inform your doctor about all medications you are taking, including over-the-counter drugs, supplements, and herbal remedies, before starting Cialis (tadalafil). This includes nitrates, often used for chest pain. Combining Cialis with nitrates can cause a dangerous drop in blood pressure.
Specific Medication Interactions
Cialis can interact negatively with alpha-blockers, medications used to treat high blood pressure and enlarged prostate. This combination may lead to dizziness or fainting. Similarly, certain antifungals, such as ketoconazole and itraconazole, can increase Cialis levels in your blood, potentially intensifying its effects or side effects. Also, protease inhibitors, commonly used to treat HIV, can increase Cialis levels. Discuss these potential interactions thoroughly with your physician to adjust dosages or consider alternative treatment options if necessary.
Grapefruit juice can also increase Cialis levels. Avoid consuming grapefruit juice while taking Cialis.
