What are the Side Effects of Viagra?

Headache, flushing, and indigestion

Nasal congestion, back pain, nausea, and dizziness are also common

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Common Viagra Side Effects

The most common side effects of Viagra include a headache, flushing, and dyspepsia (indigestion). Other side effects include:

  • Nasal Congestion
  • Abnormal vision (aka “blue-tinted” vision)
  • Back pain
  • Muscle pain
  • Nausea
  • Dizziness
  • Rash

Viagra Side Effects: Dose Size

The starting dose of Viagra is usually 50 mg. But your doctor may change your dose to 25 mg or 100 mg based on two main factors:

  1. How well the medication works (e.g. Is your dose of Viagra giving you an erection?)
  2. Do you have side effects, and how severe are they?

Side Effects: Viagra vs. Cialis

Everyone reacts to erectile dysfunction medications differently. That usually means effectiveness (getting an erection). But it can also mean the frequency or severity of side effects. These side effects are why some guys prefer Viagra over Cialis.

One of the main differences between Viagra and Cialis is how quickly the medication leaves your system. Viagra stays in your system for up to 8 hours, while Cialis is effective for up to 36 hours. 36 hours is a lot of extra time for spontaneity in the bedroom. But it’s also a long time to deal with headaches, nasal congestion, or other side effects of ED drugs if they occur.

How Often do Side Effects Happen with Viagra?

Adverse reactions to Viagra can happen, depending on a number of factors. Talk to your doctor right as soon as you experience any side effects. But you should stop using Viagra and seek immediate medical care if you experience any of the following side effects:

  • Vision loss
  • Sudden hear loss
  • Lightheadedness
  • Erections lasting longer than 4 hours (priapism)

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