But these tablets are not without their problems. These medications are harmful to patients taking nitrate-based medicines or alpha-blockers since medicine communication with PDE5 preventions such as Viagra, Cialis, and Levitra can be fatal. An additional drug interaction that hinders the body’s absorption of these PDE5 medications is the harmless food product grapefruit juice. Frequently reported side effects while taking these drugs can vary from migraine, flushing of the face and body, indigestion, dripping nose, 비아그라 처방 palpitations, queasiness, vomiting, muscle mass discomforts, and also vision disruptions. Viagra has also been reported to cause permanently damaged vision and even loss of sight in some clients.