HSDD can also be treated through sex therapy, lifestyle changes, switching or discontinuing medications and hormone therapy. Mexican drugs are of just a good a quality as the U. The medication will be effective for up to 36 hours. There is no Cialis for women; only men should take it and its generic unbranded version, Tadalafil. Your doctor will probably tell you not to take tadalafil if you are taking nitrates. Cialis should be taken at least 30 minutes before sex with or without food.Mexican pharmacies offer prescription medications at lower prices than pharmacies in the United States. The price difference is so great that some Americans travel to Mexico to take advantage of the savings. In addition, some prescription medications in the U.S. are sold over the counter in Mexico. Here is a list of the most expensive drugs taken by people over 50, their average price in the U.S. and the price in Mexico. I was surprised to discover that many people come to this site for the cost of certain drugs in Mexico. headache. indigestion. back pain. muscle pain. flushing. stuffy nose. Patients who get back pain and muscle aches usually get them 12 to 24 hours after taking Cialis and these usually go away by.