Jingo is the trade name, generic name of sildenafil citrate tablets, mainly has the function of promoting penile erection, the main treatment of erectile dysfunction, the specific use of medication as prescribed by the doctor. Sildenafil citrate tablets is an orally available phosphodiesterase type 5 selective inhibitor drug, through selective inhibition of PDE5, enhance the nitric oxide (NO)-cGMP pathway, elevate the cGMP level and lead to the relaxation of penile cavernous smooth muscle, so that patients with erectile dysfunction to the sexual stimulation of the erection of the natural erectile response. Therefore, this drug is suitable for the treatment of male erectile dysfunction. Note that sildenafil citrate tablets should be contraindicated in people who are taking nitrate drugs, people who are using guanylate cyclase agonists (e.g., leucovorin), people who are allergic to any of the components of the product, and used with caution in patients with risk of cardiovascular disease. Common adverse reactions after taking the drug include dyspepsia, myalgia, headache, visual abnormalities, nasal congestion, back pain, flushing, nausea, and dizziness, which are mild to moderate and usually last only briefly. Specific medications should be administered under the guidance of a specialist.