The generic name of Viagra drug is Sildenafil Citrate Tablets, diabetes is not a contraindication for Sildenafil Citrate Tablets, diabetic patients can use Sildenafil Citrate Tablets under doctor’s supervision. Sildenafil Citrate Tablet is used for the treatment of erectile dysfunction, adverse reactions include headache, flushing, dyspepsia, abnormal vision and myalgia. This drug should not be taken with nitrates and is contraindicated in people who are allergic to Sildenafil Citrate Tablets. It should also be noted that Sildenafil Citrate Tablet may cause vasodilation in the body circulation, which may enhance the antihypertensive effect of other antihypertensive drugs. Sildenafil Citrate Tablets should be taken under the guidance of a doctor and should not be taken by oneself.