See the DrugPatentWatch profile for acyclovir

Acyclovir is an antiviral medication commonly used to treat herpes simplex virus (HSV) infections, including cold sores and genital herpes, as well as varicella-zoster virus (VZV) infections, such as shingles and chickenpox [1]. While generally considered safe and effective, acyclovir can cause neurological side effects in some cases.

Neurological symptoms that can be caused by acyclovir include:

1. Headache: Acyclovir may cause headaches in some individuals, which can range from mild to severe [2].

2. Dizziness: Some people taking acyclovir may experience dizziness or lightheadedness [2].

3. Confusion: In rare cases, acyclovir has been associated with confusion, particularly in elderly patients or those with impaired kidney function [2].

4. Tremors: Acyclovir has been linked to tremors or shakiness, although this side effect is uncommon [3].

5. Seizures: Seizures are a rare neurological side effect of acyclovir, but they have been reported in some cases [3].

6. Hallucinations: In very rare instances, acyclovir has been associated with hallucinations [3].

It is essential to note that these neurological side effects are relatively uncommon, and most people taking acyclovir do not experience them. However, if you experience any of these symptoms while taking acyclovir, it is crucial to contact your healthcare provider immediately [2].

Sources:

[1] "Acyclovir." Drugs.com, www.drugs.com/acyclovir.html.

[2] "Acyclovir (Oral Route) Side Effects." Mayo Clinic, Mayo Foundation for Medical Education and Research, 1 Jan. 2022, www.mayoclinic.org/drugs-supplements/acyclovir-oral-route/side-effects/drg-20062630.

[3] "Acyclovir (Injection Route) Side Effects." Mayo Clinic, Mayo Foundation for Medical Education and Research, 1 Jan. 2022, www.mayoclinic.org/drugs-supplements/acyclovir-injection-route/side-effects/drg-20062631.

[4] "Acyclovir." DrugPatentWatch.com, drugpatentwatch.com/drugs/acyclovir.