Tadalafil Tablet is a kind of medication for treating erectile dysfunction and pulmonary hypertension in men, under normal circumstances, the effect of taking this product can be seen in about 30 minutes, and the maximum blood concentration can be reached in about two hours. Tadalafil tablets, whether used for the treatment of sexual dysfunction or for the treatment of pulmonary arterial hypertension, are effective in about 30 minutes after the drug is administered, and the average maximum blood concentration can be reached in about two hours. However, it should be noted that the use of tadalafil may cause adverse reactions such as headache, back pain, and indigestion. Note on taking tadalafil, 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. Taking tadalafil tablets should always be done under the guidance of a medical professional to avoid adverse reactions.