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Valacyclovir and Nitrofurantoin drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Valacyclovir (valacyclovir hydrochloride) and Nitrofurantoin (nitrofurantoin, macrocrystalline). Common drug interactions include dizziness among females.

The phase IV clinical study analyzes what interactions people have when they take Valacyclovir and Nitrofurantoin. It is created by eHealthMe based on reports of 7 people who take the same drugs from the FDA, and is updated regularly.

What is Valacyclovir?

Valacyclovir has active ingredients of valacyclovir hydrochloride. It is often used in genital herpes. eHealthMe is studying from 42,107 Valacyclovir users. Check the latest studies of Valacyclovir.

What is Nitrofurantoin?

Nitrofurantoin has active ingredients of nitrofurantoin, macrocrystalline. It is often used in urinary tract infection. eHealthMe is studying from 4,837 Nitrofurantoin users. Check the latest studies of Nitrofurantoin.

On May, 02, 2026

7 people who take Valacyclovir and Nitrofurantoin together, and have interactions are studied.

Valacyclovir and Nitrofurantoin drug interactions.

What are the common drug interactions of Valacyclovir and Nitrofurantoin, by gender? *:

female:

  1. Dizziness
  2. Abortion induced (medically referred abortion)
  3. Skin disorder (skin disease)
  4. Therapeutic response decreased (less preventive response)
  5. Thrombocytopenia (decrease of platelets in blood)
  6. Tremor (trembling or shaking movements in one or more parts of your body)
  7. Aphasia (damage to the parts of the brain that control language)
  8. Back pain
  9. Balance disorder
  10. Blindness

male:

n/a

What are the common drug interactions of Valacyclovir and Nitrofurantoin, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

  1. Abortion induced (medically referred abortion)
  2. Drug exposure during pregnancy
  3. Pregnancy
  4. Lethargy (tiredness)
  5. Nausea (feeling of having an urge to vomit)

40-49:

n/a

50-59:

  1. Injection site haemorrhage (bleeding from injection site)
  2. Pneumonia
  3. Viral infection
  4. White blood cell count decreased

60+:

  1. Dizziness
  2. Cardiac disorder
  3. Balance disorder
  4. Drug ineffective
  5. Insomnia (sleeplessness)
  6. Muscle spasms (muscle contraction)
  7. Muscle tightness
  8. Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)
  9. Tremor (trembling or shaking movements in one or more parts of your body)
  10. Coronary artery occlusion (complete obstruction of blood flow in a coronary artery)

* Approximation only. Some reports may have incomplete information.

Do you take Valacyclovir and Nitrofurantoin?

- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, side effects of, and alternative drugs to the 2 drugs:

Browse all drug interactions of Valacyclovir and Nitrofurantoin:

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Browse all side effects of Valacyclovir:

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 side effects of Nitrofurantoin:

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 interactions between Valacyclovir and drugs from A to Z:

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 interactions between Nitrofurantoin and drugs from A to Z:

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

How the study uses the data?

The study uses data from the FDA. It is based on valacyclovir hydrochloride and nitrofurantoin, macrocrystalline (the active ingredients of Valacyclovir and Nitrofurantoin, respectively), and Valacyclovir and Nitrofurantoin (the brand names). 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.

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