Bigfun primary active component is a PDE-5 (phosphodiesterase-5) class inhibitor, which shares a structure with Viagra. It keeps male sexual desire high, relaxes blood vessels and muscles, and improves blood flow to the penis. For the treatment of sexual asthenia and erectile dysfunction (ED), it provides comparable advantages at a reasonable cost. Bigfun pills are used to treat pulmonary arterial hypertension, erection issues, and erectile dysfunction (ED), often known as impotence.