Familiarize yourself with the ingredients before taking the medication to make sure that none of them will cause allergic reactions. In case any symptoms of an allergic reaction are experienced after you started taking the medication, stop the course and seek medical attention immediately.
Common side effects of Acyclovir include nausea, vomiting, headache, pain in the abdominal section, dizziness and slightly swollen limbs. However, if any of these symptoms persist over time, consult a medical professional.
Similarly, contact a doctor if you experience any of the more dangerous side effects such as significant changes in urine volumes, pain in the lower back, inclination to easy bruising, increased bleeding, disorientation and utmost fatigue.
This list of side effects is not complete. To get more detailed information about possible risks involved in taking Acyclovir in your individual case, consult your doctor.