ED medications like sildenafil (Viagra), vardenafil (Levitra), and talafil (Cialis) can cause side effects, like flushing and heaches, which can be me worse when combined with alcohol. Some ED treatments don’t involve medications and may be safer for you to use while drinking alcohol.For treatment of erectile dysfunction: For oral dosage form tablets : Adults up to 65 years of age—50 milligrams mg as a single dose no more than once a day, 1 hour before sexual intercourse. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine. Side Effects Along with its needed effects, a medicine may cause some unwanted effects. Knowing this, you might be using Viagra to help a problem to which alcohol has contributed. Proper Use Use sildenafil exactly as directed by your doctor. However, the dose is usually not more than 80 mg 3 times a day. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.Viagra and alcohol Drinking alcohol in moderation seems to be safe when you take Viagra. There seems to be no clear sign that the risks of alcohol use are me worse by Viagra. A study. There’s no known interaction between Viagra and alcohol. However, drinking alcohol while taking Viagra could worsen some of the drug’s side effects. Examples include flushing, nausea, and. Sildenafil, Viagra’s principal active ingredient, helps improve blood flow to the penile area. Now, Sildenafil might interact with food and beverages like grapefruit, grapefruit juice, and alcohol. Let’s take a closer look at how Sildenafil and alcohol might interact and influence your health. Relation between alcohol and Sildenafil.Although not all of these side effects may occur, if they do occur they may need medical attention. Different brands may not work the same way. Funnily enough, drinking in moderation may have a positive effect on your ability to get hard. Do not press on the plunger of the syringe. May make this condition worse.