Happilong shares the same active ingredient as Cialis—both contain Tadalafil, which primarily assists men in achieving an erection.
 
The 5mg option is a low-dose, "once-daily" formulation designed to maintain a stable drug concentration in the body. This eliminates the need to deliberately time your dosage right before sexual activity, allowing for greater spontaneity and a more natural rhythm.
 
Indications:It is indicated for the treatment of male erectile dysfunction (ED) and impotence, as well as the alleviation of lower urinary tract symptoms associated with benign prostatic hyperplasia (BPH), such as frequent urination and difficulty urinating.