The Cialis postmarketing reports of consumers contain the most common side effects which were chosen due to their seriousness, frequency, lack of clear alternative causation. The volunteers taking part in postmarketing experience were of different age and can be grouped as almost healthy and having certain medical health conditions. The postmarketing reports on side effects are not the same as reported from the clinical trials. Postmarketing experience does not allow reliably estimating the frequency of side effects and relating them to the drug consuming.
Serious cardiovascular events such as myocardial infarction, cardiac death of sudden character, stroke, chest pain, and tachycardia were reported in relation with the use of Cialis. Lots of these events happened during or after sexual activity.
Migraines, seizures and seizure recurrence were the most common answers from the nervous system.
Visual defects, retinal occlusion were the ophthalmologic side effects, reported mostly by those who have been suffering from certain eye diseases before taking the drug.
Sudden decrease of hearing loss has been reported postmarketing in temporal relation with the use of Cialis. The experts however say that it is not possible to determine if this reported side effect is related directly to the use of Cialis or to the patient’s underlying risk factor for loss of hearing.