Tazzle 20 mg is a medication used to treat erectile dysfunction (ED) in men. It contains tadalafil, an active ingredient that belongs to a group of medicines called PDE-5 inhibitors. It works by relaxing blood vessels and improving blood flow to the penis, helping men achieve and maintain an erection during sexual stimulation. Tazzle 20 mg generally starts working within 30–60 minutes and may remain effective for up to 36 hours. However, sexual stimulation is still necessary for an erection. It does not directly increase sexual desire or Tazzle 20 mg performance anxiety. Common side effects include headache, facial flushing, indigestion, nasal congestion, back pain, muscle aches and dizziness. Tadalafil 20 mg is generally the maximum recommended on-demand dose. Do not take it more than once in 24 hours or combine it with sildenafil medicines such as Fildena or Manforce. Avoid nitrate medications and recreational poppers. Consult a doctor before using Tazzle, particularly if you have heart or blood pressure problems. Seek emergency medical attention for chest pain, sudden vision or hearing loss, or an erection lasting longer than four hours.