Acyclovir and Maternal exposure during pregnancy - a phase IV clinical study of FDA data

Summary:

Maternal exposure during pregnancy is reported as a side effect among people who take Acyclovir (acyclovir), especially for people who are 30-39 old, have been taking the drug for 1 - 6 months also take Methylprednisolone, and have Migraine.

The phase IV clinical study analyzes which people have Maternal exposure during pregnancy 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 Maternal exposure during pregnancy?

Maternal exposure during pregnancy (use of substance during pregnancy) is found to be associated with 1,327 drugs and 1,529 conditions by eHealthMe. Check the latest studies of Maternal exposure during pregnancy.

On May, 25, 2026

53,484 people reported to have side effects when taking Acyclovir.
Among them, 98 people (0.18%) have Maternal exposure during pregnancy.

Could Acyclovir cause Maternal exposure during pregnancy?

Among these 98 people:

How long have people been on Acyclovir when they have Maternal exposure during pregnancy? *

What is the age of people who have Maternal exposure during pregnancy when taking Acyclovir? *

What are other drugs people take besides Acyclovir? *

What are other side effects people have besides Maternal exposure during pregnancy? *

Abortion Spontaneous (naturally occurring miscarriage): 14 people, 14.29%
Nausea (feeling of having an urge to vomit): 12 people, 12.24%
Drug Ineffective: 9 people, 9.18%
Anaemia (lack of blood): 8 people, 8.16%
Urine Abnormality: 7 people, 7.14%
Lymphocyte Count Decreased: 7 people, 7.14%
White Blood Cell Count Decreased: 7 people, 7.14%
Communication Disorder (speech and language disorder): 7 people, 7.14%
Drowsiness: 7 people, 7.14%
Emotional Disorder: 7 people, 7.14%

What are the existing conditions these people have? *

Relapsing-Remitting Multiple Sclerosis (reoccurrence of an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged): 7 people, 7.14%
Migraine (headache): 7 people, 7.14%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 6 people, 6.12%
Nausea (feeling of having an urge to vomit): 6 people, 6.12%
Status Epilepticus (a life-threatening condition in which the brain is in a state of persistent seizure): 5 people, 5.10%
Seizures (abnormal excessive or synchronous neuronal activity in the brain): 4 people, 4.08%
Asthma: 3 people, 3.06%
Birth Control: 3 people, 3.06%
Neuralgia (pain in one or more nerves): 3 people, 3.06%
Stress And Anxiety: 3 people, 3.06%

* Approximation only. Some reports may have incomplete information.

Do you take Acyclovir and have Maternal exposure during pregnancy?

- Check whether Maternal exposure during pregnancy is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

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

Acyclovir (54,961 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

Browse all the drugs that are associated with Maternal exposure during pregnancy:

Maternal exposure during pregnancy (1,327 drugs)

Browse all the conditions that are associated with Maternal exposure during pregnancy:

Maternal exposure during pregnancy (1,529 conditions)

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.