Interactions with Other Medications and Substances

Always inform your doctor about all medications you are taking, including over-the-counter drugs, herbal supplements, and recreational drugs. This includes nitrates (used for chest pain), alpha-blockers (used for high blood pressure or prostate problems), and certain antifungals. Combining Cialis with these can cause a dangerous drop in blood pressure.

Grapefruit juice inhibits the enzymes that metabolize Cialis. Avoid grapefruit juice while taking Cialis, as this can increase the drug’s concentration in your blood, potentially leading to side effects.

Some medications can affect Cialis’s effectiveness or increase the risk of side effects. These include medications for HIV/AIDS (like ritonavir or indinavir) and some antibiotics. Your doctor can advise on safe combinations.

Alcohol can intensify Cialis’s side effects, particularly dizziness and headaches. Limit alcohol consumption while taking Cialis.

Medication Type Potential Interaction Recommendation
Nitrates Dangerous blood pressure drop Avoid combining with Cialis.
Alpha-blockers Increased risk of low blood pressure Discuss with your doctor before combining.
HIV/AIDS medications (ritonavir, indinavir) Increased Cialis levels Dosage adjustment may be necessary.
Grapefruit juice Increased Cialis levels Avoid grapefruit juice.
Alcohol Increased side effects Limit alcohol consumption.

This information is not exhaustive. Consult your doctor or pharmacist for a complete list of potential interactions and personalized advice.