How do regulatory agencies ensure the safety and efficacy of medications like Viagra?

May 1, 2023 ... Other side effects. Viagra, Cialis and Levitra and any durgs in this class also can cause vision problems, headaches and upset stomach, among ... Nov 22, 2023 ... Cocaine and Viagra, however, can cause serious repercussions. In some instances, the combination has even proved to be deadly. Mixing different ... Feb 25, 2020 ... Sildenafil, sold under the brand name Viagra, is ... Side effects most often emerge in men with other underlying health conditions. The significance of these effects in dogs and cats is unknown. This short-acting medication should stop working within 24 hours, although can last longer in ... Viagra (Sildenafil) has ... Kloner, R.A.. Cardiovascular effects of the 3 phosphodiesterase-5 inhibitors approved for the treatment of erectile dysfunction. Jun 11, 2008 ... Such increased blood flow is not as helpful during competitive sports. Scientific studies have shown, however, that the vasodilation effects of ... Apr 16, 2020 ... P02.278 Effects of sildenafil (viagra®) on cardiovascular autonomic function (CAF) in man: Preliminary results - Volume 15 Issue S2. In men with stable CAD, sildenafil had no effect on symptoms, exercise duration, or presence or extent of exercise-induced ischemia, as assessed by exercise ... Viagra works to treat ED by helping you get and maintain an erection. The drug does this by improving blood flow into your penis when you're sexually aroused. Viagra is unlikely to impair common visual tasks, except under conditions of reduced visibility when objects are already near visual threshold.