1. Acyclovir is an antiviral drug made use of to address the herpes infection. It could be prescribed for people with fever blisters, poultry pox, shingles and genital herpes. When taken as soon as the initial indicators of the infection ended up being noticeable, this medication is most reliable. Acyclovir enters breast milk and could influence the wellness of a nursing infant. If you are taking acyclovir, Make sure you chat to your physician prior to nursing. Moderate side effects you could experience when taking this medication include tummy discomfort, lightheadedness, frustration, swelling of your feet and hands, reduction of hunger, vomiting and queasiness.