Consult your doctor before taking Cialis, especially if you have pre-existing conditions.
Common side effects include headache, flushing, nasal congestion, and upset stomach. These usually are mild and temporary. More serious, though rare, side effects include vision changes (blurred vision, sudden vision loss), hearing loss, and prolonged erection (priapism). Seek immediate medical attention if you experience any of these.
Cialis can interact with certain medications. Specifically, it should be avoided with nitrates (used to treat chest pain) due to a risk of dangerously low blood pressure. Similarly, interactions may occur with alpha-blockers (used to treat high blood pressure or enlarged prostate), resulting in dizziness or fainting. Discuss all medications, including over-the-counter drugs and supplements, with your physician before starting Cialis.
| Nitrates | Dangerously low blood pressure |
| Alpha-blockers | Dizziness, fainting |
| CYP3A4 inhibitors (e. g., ketoconazole, ritonavir) | Increased Cialis levels in the blood |
| CYP3A4 inducers (e. g., rifampin, St. John’s wort) | Decreased Cialis levels in the blood |
Grapefruit juice can also affect Cialis metabolism; avoid consuming it while taking the medication. Remember to inform your doctor about any allergies or health issues you have.
This information is not a substitute for professional medical advice. Always seek the guidance of your doctor or pharmacist for any questions about Cialis or its use.
