If you have a reaction to any of the ingredients in Vigora 100 Red Tablet 4, you should not take it. You should also abstain from taking this medication if you use nitrate-containing or guanylate cyclase-stimulating medications. Before using this drug, you should also talk to your doctor if you have cardiac issues. This medication may lead to uncomfortable erections, and it may interfere with other heart-related medications.
Before using Vigora 100 if you have been given a prescription for it, talk to your doctor about any potential adverse effects. Eye injury is one of the drug's major negative effects. If the erection lasts longer than a few minutes, men should see their doctors right away.