A box of tadalafil tablets is around $120 to $225. The main ingredient of tadalafil tablets is tadalafil. Clinically, it is mainly used for the treatment of male erectile dysfunction. The price is affected by many factors such as manufacturers, sales channels, specifications, packaging, imported or domestic and so on, and is not fixed. Currently, its selling price for a box ranges from 120 yuan to 225 yuan. The specific price is subject to local pharmacies and medical institutions. However, this medicine is a prescription drug, and its purchase requires a doctor’s prescription and the use of medicines under the guidance of a medical professional. The use of tadalafil may cause adverse reactions such as headache, back pain, and indigestion. Tadalafil is contraindicated in people who are allergic to any of the ingredients in this product, patients who are taking any form of nitrates, guanylate cyclase stimulators, women, children and other people.