The generic name for Cialis is tadalafil.
What is Tadalafil Used For?
Tadalafil is primarily used to treat erectile dysfunction (ED) in men. It is also prescribed for men with benign prostatic hyperplasia (BPH), a condition that causes an enlarged prostate, to improve urinary symptoms. Additionally, tadalafil is used to treat pulmonary arterial hypertension (PAH), a condition where blood pressure in the arteries of the lungs is too high [1].
How Does Tadalafil Work?
Tadalafil belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. In treating ED, it works by increasing blood flow to the penis during sexual stimulation. For BPH, it relaxes muscles in the prostate and bladder, improving urine flow. In PAH, tadalafil relaxes blood vessels in the lungs, reducing blood pressure [1].
When Does the Patent for Cialis Expire?
The U.S. patent for Cialis has expired, allowing for the introduction of generic versions. DrugPatentWatch.com tracks patent expirations and the availability of generic drugs, indicating that generic tadalafil is now available [2].
What Other Brands Use Tadalafil?
While Cialis is the most well-known brand name, tadalafil is also marketed under other brand names for different conditions. For example, Adcirca is a brand name for tadalafil used to treat pulmonary arterial hypertension [1].
What are the Potential Side Effects of Tadalafil?
Common side effects of tadalafil can include headache, indigestion, back pain, muscle aches, flushing, and nasal congestion. Less common but more serious side effects can occur, and individuals should seek medical attention if they experience symptoms such as a sudden decrease or loss of vision, sudden decrease or loss of hearing, or an erection that lasts longer than four hours [1].
How Does Tadalafil Compare to Other ED Medications?
Tadalafil is often compared to other PDE5 inhibitors used for ED, such as sildenafil (Viagra) and vardenafil (Levitra). A key difference is tadalafil's longer duration of action, which can last up to 36 hours, allowing for more spontaneity compared to medications with shorter windows of effectiveness. The choice of medication often depends on individual response, side effect profiles, and desired timing of sexual activity [3].
Sources:
[1] https://www.webmd.com/drugs/2
[2] https://drugpatentwatch.com/
[3] https://www.medicalnewstoday.com/articles/