Interactions with Other Medications and Substances

Always inform your doctor about all medications you’re taking, including over-the-counter drugs, supplements, and herbal remedies, before starting any new treatment. This includes nitrates, which can cause a dangerous drop in blood pressure when combined with sildenafil.

Nitrates and Sildenafil

Combining sildenafil with nitrates (found in medications for chest pain) is extremely risky and can lead to life-threateningly low blood pressure. This interaction is a serious concern and must be avoided.

Other Medications

    Alpha-blockers: These medications, often used to treat high blood pressure or enlarged prostate, can also lower blood pressure. Combining them with sildenafil may cause excessive blood pressure drops. CYP3A4 Inhibitors: These medications (like ketoconazole, ritonavir) can increase sildenafil levels in your body, potentially leading to side effects. CYP3A4 Inducers: Conversely, these medications (like rifampin, St. John’s wort) can decrease sildenafil levels, reducing its effectiveness. Antihypertensives: Many blood pressure medications can interact with sildenafil, potentially causing hypotension (low blood pressure).

Alcohol and Sildenafil

Excessive alcohol consumption can worsen sildenafil’s side effects, including dizziness and headaches. Moderate alcohol intake is generally acceptable, but consult your doctor for guidance.

Grapefruit Juice

Grapefruit juice inhibits the enzyme that metabolizes sildenafil, leading to higher blood levels of the drug and increased risk of side effects. Avoid grapefruit juice while taking sildenafil.

Drug Interactions: A Personalized Approach

This information is not exhaustive. The potential for interactions depends on individual factors, including your overall health, other medications you are taking, and the specific dose of sildenafil. Your doctor can provide personalized advice about potential drug interactions based on your unique situation.

Always Consult Your Doctor

Discuss all medications and supplements with your physician before starting sildenafil. Report any unexpected side effects immediately to your doctor. Follow your doctor’s instructions carefully regarding dosage and administration.