Head swelling should refer to dizziness and headache, a common side effect of Sildenafil Citrate, which is usually relieved after rest.
Sildenafil citrate is mainly used in clinic to treat erectile dysfunction in men, which can increase the hardness of erection and so on, and improve the sex life effectively. Common side effects of this drug include headache, dizziness, indigestion, nausea, back pain, visual abnormalities, etc. They can usually be relieved on their own after about 24 hours of rest and do not require special treatment. It is contraindicated for those who are allergic to this drug and cannot be combined with nitrate.
In addition, dizziness and headache may be due to sexual activity or other reasons. If the discomfort is not relieved by itself after rest, it is necessary to consult a doctor in time.