Side effects of Acyclovir

Headache after taking meds

Common side effects of Zovirax include:

  • nausea
  • diarrhea
  • headache or vomiting.

If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she have determined that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these side effects occur (less common):

  • dizziness
  • drowsiness
  • signs of kidney problems (such as changes in the amount of urine, unusual back / side pain)
  • mental changes
  • trembling
  • unsteady movement
  • difficulty speaking.

This medicine can rarely cause a life-threatening disorder that affects blood cells, kidneys, and other parts of the body. This disorder is more likely to occur if you have conditions related to a weakened immune system (such as HIV disease, bone marrow transplantation, kidney transplantation). Seek emergency medical attention if any of these rare but serious side effects occur: extreme tiredness, slow / rapid / irregular heartbeat, bruising / bleeding, high fever, bloody / dark urine, severe stomach / abdominal pain, eyes / skin Yellowing, changes in vision, loss of consciousness, seizures.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching / swelling (especially of the face / tongue / throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.



I have a herpes simplex virus in my blood, however, I never complained of a cold on my lips, and after giving birth, because of the hormonal adjustment, I’ve got this ((.
Waking up for the morning, my lips ached painfully, as if I had bitten it all night, when I looked at myself in the mirror, just gasped. Exactly in the middle on the upper lip appeared white bubbles and condensation.
The whole morning I went about my business and only looked at myself in the mirror again during the day, and was horrified when only my lip managed to spread it so. It was Friday, no one will let me go to the doctor, I had to go online and look for funds against this nightmare! I decided to try Zovirax, ran to the pharmacy.
I have some kind of allergy to Acyclovir, after several hours of use, my lips exploded even more, by the evening she was sticking out for 2cm, and my lip ached terribly, almost all night I did not sleep.
But, at the end of the second day, at last, the lip began to slowly decrease. Now it remains only to wait until it passes completely. Tired of walking along the street in the gauze bandage.