This is the brand product by Eli Lilly
Oral Uses: Tadalafil is used to treat male sexual function problems (impotence or erectile dysfunction) by blocking a certain enzyme (phosphodiesterase-PDE5) in the body. In combination with sexual stimulation, tadalafil helps blood flow into the penis to achieve and maintain an erection. Tadalafil may also be used for purposes other than those listed in this medication guide.
Please consult your physician before taking any medication.