Acyclovir / Aciclovir

Acyclovir (also Aciclovir) is an antiviral medicine that belongs to a class of

medicines called nucleoside analogues. It’s commonly used to treat viral infections caused by the herpes virus family, including cold sores (herpes labialis), genital herpes, shingles (herpes zoster), and chickenpox (varicella). Acyclovir helps control outbreaks and reduce the severity and duration of symptoms, though it does not completely cure the infection or prevent it from spreading to others. Acyclovir works by blocking the virus’s ability to multiply inside your body. After being absorbed, it is converted into an active form inside infected cells, where it interferes with the virus’s DNA replication. In simple terms, it “stops the virus from copying itself,” allowing your immune system to control the infection more effectively and helping sores heal faster. Common side effects include nausea, headache, dizziness, tiredness, and mild stomach upset. Avoid alcohol while taking Acyclovir, as it may increase dizziness or dehydration. Drink plenty of fluids to protect your kidneys, especially if you’re on a higher dose or using Acyclovir long-term. If you have kidney disease, neurological conditions, or are elderly, your doctor may adjust your dose. Avoid driving or operating machinery if you feel dizzy or sleepy after taking it.