Viagra, generally referred to as sildenafil citrate tablets, goes into a state of weakness after ejaculation and is usually not erect. If the erection lasts for more than 4 hours it is an abnormal erection and should be consulted.
Sildenafil citrate tablets are mainly used for the treatment of erectile dysfunction, men taking this drug will enter a period of inactivity after ejaculation, and usually will not have an erection all the time. A small number of prolonged erections (more than 4 hours) and abnormal erections (painful erections for more than 6 hours) have been reported with this medication.
If there is no weakness after ejaculation and the erection persists for more than 4 hours, the patient should be taken seriously and seen immediately. If not treated immediately, penile tissue will likely be damaged and may result in permanent loss of erectile function.
The drug may cause adverse reactions such as headache, flushing, abnormal vision, nausea, dizziness, and rash after use. It is contraindicated for those who are allergic to the drug and should not be used by women as well as children.
It is advisable to consult a doctor if you need to use the drug and always read the instructions carefully before use to avoid adverse reactions.