Cialis, or tadalafil, works by inhibiting phosphodiesterase-5 (PDE5), an enzyme that breaks down cyclic guanosine monophosphate (cGMP). Increased cGMP levels relax blood vessels in the penis, allowing for improved blood flow and facilitating erections. This mechanism explains its primary use in treating erectile dysfunction (ED).
Improved Blood Flow and Erectile Function
Beyond ED, Cialis demonstrates potential benefits in treating benign prostatic hyperplasia (BPH). By relaxing the smooth muscles in the prostate and bladder neck, it can ease urinary symptoms associated with BPH, such as frequent urination and weak urine stream. Studies suggest Cialis improves urinary flow rates and reduces symptom scores in many men with BPH. This dual action makes it a valuable option for men experiencing both ED and BPH.
Beyond Erectile Dysfunction and BPH
Research also explores Cialis’s potential role in treating pulmonary arterial hypertension (PAH). By improving blood flow to the lungs, it can alleviate symptoms like shortness of breath and chest pain. While not a first-line treatment for PAH, it shows promise as an additional therapy for certain patients.


