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Famciclovir and Heart Palpitations: What Users Say

Heart palpitations: mentioned by 5 users (7.1%)

Based on user experiences from 70 Famciclovir reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

headaches 20.0%
nausea 10.0%
heart palpitations 7.1%
pain 7.1%
swelling 5.7%
diarrhea 4.3%
itching 4.3%
tingling 4.3%
tiredness 4.3%

Reviews for Famciclovir

Showing 5 reviews tagged with "heart palpitations". Clear filters to view all 70 reviews.
Commonly mentioned side effects
  • Lav...
  • September 23, 2017

For Cold Sores "The side effect of heart palpitations was really scary. I could describe it to be like a bad ecstasy pill at a rave. I had to pull the car over, get out, and lie on the side of the road, lasting all up one hour. Other than that... cold sore GONE a day later! Was it worth lying in the gutter for? YES!"

8 / 10
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45 Report
  • Hay...
  • Taken for less than 1 month
  • August 19, 2019

For Cold Sores "Had 2 cold sores on my lip, Dr. and chemist recommended taking Elovax (famciclovir 500 mg) 3 tablet dose. Within 30 minutes of taking it, I started to have severe heart palpitations, severe diarrhea, nausea, and restlessness. After a few hours, I started to get a headache, within 5 hours, my headache had become unbearable and I was rushed to the hospital. Placed on 2 drips and monitored for a few hours. Over the next few days, I am still unwell with stomach pains and a headache. My cold sores did improve BUT NEVER, NEVER AGAIN... DID I MENTION NEVER AGAIN... My experience was awful. I would not recommend taking this medication and wish I hadn't."

9 / 10
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19 Report
  • Anonymous
  • September 16, 2020

For Cold Sores "First time I took it, I got an intense headache, but I figured it was worth it to prevent a cold sore. But the second time, I had horrible heart palpitations. I felt dizzy and weak, and it was so unpleasant I will never take it again."

1 / 10
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8 Report
  • ELO...
  • November 9, 2021

For Cold Sores "Took Elovax (famciclovir) one dose. 3 tabs to be taken all at once. I took them for the beginnings of a cold sore that was just starting on my lip. Half an hour after I took them, I had the worst heart palpitations I have ever had. It actually frightened me as my heart rate was incredibly fast. It took a while for it to slow back down. I feel okay now but don't think I will be taking that again."

4 / 10
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3 Report
  • Anonymous
  • Taken for less than 1 month
  • February 4, 2021

For Cold Sores "Gave me heart palpitations."

1 / 10
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8 Report

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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.