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Dr Clare Morrison

Article by Dr Clare Morrison

Should I Drink Alcohol With Viagra or Cialis?


Two of the most popular erectile dysfunction drugs are Viagra and Cialis.

Although both medications are similar in many ways, they also have their differences – Viagra takes approximately 30 minutes to take effect, whereas Cialis takes 15 minutes.  In addition, Viagra lasts for approximately four hours, whereas Cialis can last up to 36 hours.

A popular question asked about these medications is whether or not they can be taken with alcohol. After all, alcohol interacts with the majority of medicines, as it thins the blood and can lead to them being broken down much quicker.

These means that the drugs aren’t absorbed as well and won’t work properly.

Viagra with alcohol

Normally, when alcohol is consumed, it stops the natural erection process. Therefore, when taking Viagra and drinking alcohol, the same concept applies leading to erectile dysfunction. This is more likely to happen if alcohol is consumed in large amounts.

There is not enough evidence to prove that the consumption of a small amount of alcohol can lead to erectile dysfunction.

Cialis with alcohol

There is not enough evidence to prove it’s safe to drink alcohol with Cialis. However, excessive amount should definitely not be consumed as it will most likely lead to erectile dysfunction.

Side effects of Viagra and Cialis:

–          Nausea

–          Vomiting

–          Headache (including migraine)

–          Flushing

–          Dizziness

–          Indigestion (heartburn)

Patients taking either of these medicines should not:

  • Take nitrates (because Viagra and Cialis can enhance the effect of nitrates, which can lead to a significant drop in blood pressure)
  • Be taken by patients who have had a recent stroke, suffer from myocardial infarction (heart attack), or suffer from unstable angina

For more information, contact one of MedExpress’ friendly team. 

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Dr Clare Morrison
Dr Clare Morrison
Experienced General Practitioner in Hampshire since 1995, with particular interest in Nutrition, Obesity and Smoking Cessation.
Originally published February 17 2014, updated March 10 2020