Acyclovir and Petechiae - a phase IV clinical study of FDA data

Summary:

Petechiae is reported as a side effect among people who take Acyclovir (acyclovir), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Synthroid, and have Multiple myeloma.

The phase IV clinical study analyzes which people have Petechiae when taking Acyclovir. It is created by eHealthMe based on reports of 53,484 people who have side effects when taking Acyclovir from the FDA, and is updated regularly.

What is Acyclovir?

Acyclovir has active ingredients of acyclovir. It is often used in herpes simplex. eHealthMe is studying from 54,961 Acyclovir users. Check the latest studies of Acyclovir.

What is Petechiae?

Petechiae (a small red or purple spot caused by bleeding into the skin) is found to be associated with 1,088 drugs and 1,872 conditions by eHealthMe. Check the latest studies of Petechiae.

On Nov, 25, 2025

53,484 people reported to have side effects when taking Acyclovir.
Among them, 122 people (0.23%) have Petechiae.

Among these 122 people:

* Approximation only. Some reports may have incomplete information.

Do you take Acyclovir and have Petechiae?

- Check whether Petechiae is associated with a drug or a condition (FREE)
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Related studies:

Effectiveness of, long term effects of, and alternative drugs to Acyclovir:

Acyclovir (54,961 reports)

Petechiae treatments and more:

Petechiae (15,174 reports)

How severe was Petechiae and when was it recovered:

Petechiae in Acyclovir

Expand to all the drugs that have ingredients of acyclovir:

Petechiae and drugs with ingredients of acyclovir (91 reports)

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Common Acyclovir side effects:

Acyclovir side effect: Fever (3,828 reports)

Browse all side effects of Acyclovir:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Common drugs associated with Petechiae:

Browse all the drugs that are associated with Petechiae:

Petechiae (1,088 drugs)

Common conditions associated with Petechiae:

Hypertension: 640 reports
Blood pressure - high: 634 reports
Chronic lymphocytic leukaemia: 486 reports
Rheumatoid arthritis: 437 reports
Atrial fibrillation/flutter: 390 reports
Pain: 342 reports
Pain relief: 333 reports
Ms hug: 319 reports
Depression: 260 reports
Itp: 259 reports

Browse all the conditions that are associated with Petechiae:

Petechiae (1,872 conditions)

Drugs similar to Acyclovir and Petechiae :

Valtrex side effect: Petechiae

Related publications that referenced our studies

Choi N, Lee JY, Sunwoo JS, Kwon KI, Roh H, Ahn MY, Lee KB, "Hyponatremia during Acyclovir Treatment of Bell’s Palsy", Journal of the Korean Neurological Association, 2017 Aug .
Choi N, Lee JY, Sunwoo JS, Kwon KI, Roh H, Ahn MY, Lee KB, "Hyponatremia during Acyclovir Treatment of Bell’s Palsy", Journal of the Korean Neurological Association, 2017 Aug .

How the study uses the data?

The study uses data from the FDA. It is based on acyclovir (the active ingredients of Acyclovir) and Acyclovir (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.