Always inform your doctor about all medications you are taking, including over-the-counter drugs, herbal supplements, and recreational drugs, before starting Cialis. This includes nitrates, often used for chest pain. Combining these can cause a dangerous drop in blood pressure.
Nitrates and Similar Medications
Nitrates, such as nitroglycerin, and similar medications significantly increase the risk of dangerously low blood pressure when taken with Cialis. This combination can lead to serious health consequences. Avoid concurrent use.
Alpha-Blockers
Alpha-blockers, frequently prescribed for high blood pressure or enlarged prostate, can cause a similar drop in blood pressure when combined with Cialis. Your doctor might adjust your dosage or choose alternative medications.
Other Medications
Certain antifungal medications, such as ketoconazole and itraconazole, can increase Cialis levels in your blood, potentially leading to side effects. Similarly, some HIV protease inhibitors can have the same effect. Your doctor may monitor you closely or suggest alternative treatments.
Grapefruit Juice
Grapefruit juice can interact with Cialis, increasing its concentration in your blood. This can heighten the risk of side effects. Limiting or avoiding grapefruit juice while taking Cialis is recommended.
Always Consult Your Doctor
This information is not exhaustive. This is not a substitute for professional medical advice. Discuss any potential drug interactions with your doctor or pharmacist before starting or changing any medications.


