⚕️ Full Prescribing Information

For complete safety information, warnings, and dosage guidelines:

View FDA Label (PDF) →

📋 Overview

Cialis (tadalafil) is a longer-acting PDE5 inhibitor used to treat erectile dysfunction and symptoms of benign prostatic hyperplasia. Effects can last up to 36 hours.

How It Works

Cialis works by relaxing blood vessels and increasing blood flow to the penis. It also relaxes muscles in the prostate and bladder, improving BPH symptoms.

✓ FDA Approved Uses

  • Treatment of erectile dysfunction (ED)
  • Treatment of benign prostatic hyperplasia (BPH)
  • Treatment of both ED and BPH together

🧪 Required Lab Monitoring

Your healthcare provider will order these tests to monitor your treatment:

Lipid Panel (Cholesterol Test)
Baseline cardiovascular risk assessment
Testosterone Test
If symptoms of low testosterone present

Need to book these tests?

Order Tests Online →

⚡ Common Side Effects

Contact your doctor if these persist or worsen:

  • Headache
  • Indigestion
  • Back pain
  • Muscle aches
  • Flushing
  • Stuffy or runny nose

🚨 Serious Side Effects

Seek immediate medical attention if you experience:

  • Sudden vision loss
  • Sudden hearing loss
  • Priapism (erection lasting more than 4 hours)
  • Chest pain or heart attack symptoms

⚠️ Do Not Use If

  • Taking nitrates for chest pain
  • Taking riociguat for pulmonary hypertension
  • Severe liver or kidney disease
  • Recent stroke or heart attack

📢 Important Warnings

  • Do not use with nitrate medications
  • May cause a sudden drop in blood pressure
  • Effects may last up to 36 hours

📚 Sources

Last Reviewed: April 2026