Penicillin v potassium and Headache - a phase IV clinical study of FDA data

Summary:

Headache is reported as a side effect among people who take Penicillin v potassium (penicillin v potassium), especially for people who are female, 60+ old, also take Sodium Chloride, and have Immunodeficiency common variable.

The phase IV clinical study analyzes which people have Headache when taking Penicillin v potassium. It is created by eHealthMe based on reports of 1,039 people who have side effects when taking Penicillin v potassium from the FDA, and is updated regularly.

What is Penicillin v potassium?

Penicillin v potassium has active ingredients of penicillin v potassium. It is often used in tooth abscess. eHealthMe is studying from 1,077 Penicillin v potassium users. Check the latest studies of Penicillin v potassium.

What is Headache?

Headache (pain in head) is found to be associated with 3,753 drugs and 5,772 conditions by eHealthMe. Check the latest studies of Headache.

On Jul, 23, 2026

1,039 people reported to have side effects when taking Penicillin v potassium.
Among them, 28 people (2.69%) have Headache.

Could Penicillin v potassium cause Headache?

Among these 28 people:

What is the gender of people who have Headache when taking Penicillin v potassium? *

female: 64 %
male: 36 %

What is the age of people who have Headache when taking Penicillin v potassium? *

What are other drugs people take besides Penicillin v potassium? *

Sodium Chloride: 10 people, 35.71%
Acetaminophen: 7 people, 25.00%
Prednisone: 7 people, 25.00%
Lidocaine: 6 people, 21.43%
Amoxicillin: 6 people, 21.43%
Diphenhydramine Hydrochloride: 6 people, 21.43%
Levothyroxine Sodium: 5 people, 17.86%
Cymbalta: 5 people, 17.86%
Tramadol: 4 people, 14.29%
Omeprazole: 4 people, 14.29%

What are other side effects people have besides Headache? *

Fatigue (feeling of tiredness): 16 people, 57.14%
Pain: 11 people, 39.29%
Malaise (a feeling of general discomfort or uneasiness): 8 people, 28.57%
Fever: 7 people, 25.00%
Dizziness: 7 people, 25.00%
Nausea (feeling of having an urge to vomit): 7 people, 25.00%
Pain In Extremity: 6 people, 21.43%
Sinusitis (inflammation of sinus): 6 people, 21.43%
Rashes (redness): 6 people, 21.43%
Back Pain: 5 people, 17.86%

What are the existing conditions these people have? *

Immunodeficiency Common Variable: 6 people, 21.43%
Pain: 2 people, 7.14%
Acute Lymphocytic Leukemia (All) (cancer of the white blood cells characterized by excess lymphoblasts): 2 people, 7.14%
Ankylosing Spondylitis (type of arthritis affecting the spine): 2 people, 7.14%
Chronic Graft Versus Host Disease (immune cells attack the host's body cells after transplant): 2 people, 7.14%
Device Related Infection: 2 people, 7.14%
Immune System Disorder: 2 people, 7.14%
Multiple Myeloma (cancer of the plasma cells): 2 people, 7.14%
Acute Graft Versus Host Disease In Intestine (acute complication in intestine following an allogeneic tissue/blood transplant): 2 people, 7.14%
Psoriasis (immune-mediated disease that affects the skin): 2 people, 7.14%

* Approximation only. Some reports may have incomplete information.

Do you take Penicillin v potassium and have Headache?

- Check whether Headache 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 Penicillin v potassium:

Penicillin v potassium (1,077 reports)

Headache treatments and more:

Headache (756,642 reports)

Browse all side effects of Penicillin v potassium:

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 Headache:

Headache (3,753 drugs)

Browse all the conditions that are associated with Headache:

Headache (5,772 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on penicillin v potassium (the active ingredients of Penicillin v potassium) and Penicillin v potassium (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.