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

Summary:

Caecitis is reported as a side effect among people who take Acyclovir (acyclovir), especially for people who are female, 50-59 old, have been taking the drug for 1 - 6 months also take Cyclophosphamide, and have Acute lymphocytic leukemia (all).

The phase IV clinical study analyzes which people have Caecitis 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 Caecitis?

Caecitis (inflammation of the cecum) is found to be associated with 136 drugs and 365 conditions by eHealthMe. Check the latest studies of Caecitis.



On Jan, 11, 2026

53,484 people reported to have side effects when taking Acyclovir.
Among them, 40 people (0.07%) have Caecitis.

Could Acyclovir cause Caecitis?

Among these 40 people:

How long have people been on Acyclovir when they have Caecitis? *

  • < 1 month: 25 %
  • 1 - 6 months: 75 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

What is the gender of people who have Caecitis when taking Acyclovir? *

  • female: 65.79 %
  • male: 34.21 %

What is the age of people who have Caecitis when taking Acyclovir? *

  • 0-1: 0.0 %
  • 2-9: 2.63 %
  • 10-19: 28.95 %
  • 20-29: 15.79 %
  • 30-39: 7.89 %
  • 40-49: 2.63 %
  • 50-59: 36.84 %
  • 60+: 5.26 %

What are other drugs people take besides Acyclovir? *

  1. Cyclophosphamide: 17 people, 42.50%
  2. Etoposide: 16 people, 40.00%
  3. Neupogen: 14 people, 35.00%
  4. Diflucan: 13 people, 32.50%
  5. Cytarabine: 12 people, 30.00%
  6. Vancomycin: 12 people, 30.00%
  7. Cipro: 12 people, 30.00%
  8. Lorazepam: 10 people, 25.00%
  9. Zofran: 9 people, 22.50%
  10. Acetaminophen: 9 people, 22.50%

What are other side effects people have besides Caecitis? *

  1. Febrile Neutropenia (fever with reduced white blood cells): 27 people, 67.50%
  2. Hypotension (abnormally low blood pressure): 18 people, 45.00%
  3. Thrombocytopenia (decrease of platelets in blood): 13 people, 32.50%
  4. Pleural Effusion (water on the lungs): 10 people, 25.00%
  5. Staphylococcal Infection (an infection with staphylococcus bacteria): 10 people, 25.00%
  6. Blood Phosphorus Decreased: 10 people, 25.00%
  7. Nausea (feeling of having an urge to vomit): 10 people, 25.00%
  8. Diarrhea: 10 people, 25.00%
  9. Pancreatitis (inflammation of pancreas): 10 people, 25.00%
  10. Mental Status Changes (general changes in brain function, such as confusion, amnesia (memory loss), loss of alertness, loss of orientation): 9 people, 22.50%

What are the existing conditions these people have? *

  1. Acute Lymphocytic Leukemia (All) (cancer of the white blood cells characterized by excess lymphoblasts): 16 people, 40.00%
  2. Acute Myeloid Leukaemia (acute cancer in which the bone marrow makes abnormal myeloblasts): 6 people, 15.00%
  3. Fever: 5 people, 12.50%
  4. White Blood Cell Count Decreased: 3 people, 7.50%
  5. Multiple Myeloma (cancer of the plasma cells): 3 people, 7.50%
  6. Adrenal Insufficiency (a condition in which the adrenal glands do not produce adequate amounts of steroids): 3 people, 7.50%
  7. Chills (felling of cold): 3 people, 7.50%
  8. Gastritis (inflammation of stomach): 3 people, 7.50%
  9. Herpes Virus Infection: 3 people, 7.50%
  10. Tumor Lysis Syndrome: 3 people, 7.50%

* Approximation only. Some reports may have incomplete information.

Do you take Acyclovir and have Caecitis?

- Check whether Caecitis is associated with a drug or a condition
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Related studies:

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

Caecitis treatments and more:

How severe was Caecitis and when was it recovered:

Expand to all the drugs that have ingredients of acyclovir:

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+

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 Caecitis:

Browse all the conditions that are associated with Caecitis:

Related publications that referenced our studies


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.



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