An Overview of Acyclovir - Its Uses, Dosage and Side Effects

 Acyclovir, or more commonly known as Zovirax ®, is an antiviral medication used to treat the herpes simplex virus, shingles (herpes zoster) and other types of herpesvirus infections including cold sores, fever blisters and lesions. Although it cannot cure herpes, Acyclovir does decrease soreness and itching and reduces the severity of outbreaks. It can be taken orally, although this is only recommended for patients with severe symptoms due its potential for adverse side effects.  

Dosage

Acyclovir can be administered through, ointment, pill, liquid and intravenous form. Acyclovir dosage will vary depending on which form has been prescribed. Ointment is usually applied every three hours, six times a day for up to a week. The pills come in either 800 mg or 200 mg doses. It is important to always read the label and stick to the recommended dosage. When symptoms are particularly severe, and a course of treatment taken orally has been ineffective, then Acyclovir may be taken intravenously. Within a few days of treatment, the sores usually begin to crust over and heal. Always store medications in their original packaging in a dry, safe place away from children.   

Side Effects

Acyclovir side effects are fairly uncommon, owing to its good toxicity profile, although they can occur. Always consult your doctor if the following side effects persist:

• Upset stomach
• Nausea
• Headache
• Burning and stinging when the ointment is applied
• Diarrhea
• Possible hair loss from long-term use

To help reduce stoamach upset, it is recommended that you eat dry salted crackers. Also, try to refrain from lying down after you eat. Aspirin or painkillers can help alleviate a headache and Compazine, Reglan or Phenergan can reduce nausea.