Overdose
In the case of treatment of erectile dysfunction, the drug is used when needed, so it is mostly not overused. It is also imperative that you follow your doctor’s instructions. In the case of treatment of pulmonary artery hypertension, if a dose is missed, use the drug as soon as you remember. If it is close to the time for the next tablet, do not double dose; instead, skip the dose and continue the medication normally. Double dosing can lead to fatal symptoms like troubled breathing, seizure, and chest pain. Seek medical help if any of these symptoms are noticed.