Acetaminophen and Clonus - a phase IV clinical study of FDA data

Summary:

Clonus is reported as a side effect among people who take Acetaminophen (acetaminophen), especially for people who are female, 30-39 old, have been taking the drug for < 1 month also take Lorazepam, and have Nausea.

The phase IV clinical study analyzes which people have Clonus when taking Acetaminophen. It is created by eHealthMe based on reports of 181,086 people who have side effects when taking Acetaminophen from the FDA, and is updated regularly.

What is Acetaminophen?

Acetaminophen has active ingredients of acetaminophen. It is often used in pain. eHealthMe is studying from 183,078 Acetaminophen users. Check the latest studies of Acetaminophen.

What is Clonus?

Clonus (series of involuntary, rhythmic, muscular contractions and relaxations) is found to be associated with 290 drugs and 561 conditions by eHealthMe. Check the latest studies of Clonus.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Sep, 03, 2026

181,086 people reported to have side effects when taking Acetaminophen.
Among them, 83 people (0.05%) have Clonus.

Among these 83 people:

How long have people been on Acetaminophen when they have Clonus? *

What is the gender of people who have Clonus when taking Acetaminophen? *

female: 68.35 %
male: 31.65 %

What is the age of people who have Clonus when taking Acetaminophen? *

What are other drugs people take besides Acetaminophen? *

What are other side effects people have besides Clonus? *

Serotonin Syndrome (occurs when two drugs that affect the body's level of serotonin are taken together at the same time): 42 people, 50.60%
Fever: 41 people, 49.40%
Tremor (trembling or shaking movements in one or more parts of your body): 40 people, 48.19%
Hyperreflexia (overactive or over responsive reflexes): 36 people, 43.37%
Hyperhidrosis (abnormally increased sweating): 34 people, 40.96%
Arrhythmias (irregular heartbeat): 26 people, 31.33%
Hypertonia (abnormal increase in muscle tension and a reduced ability of a muscle to stretch): 26 people, 31.33%
Agitation (state of anxiety or nervous excitement): 25 people, 30.12%
Drug Ineffective: 24 people, 28.92%
Sinus Tachycardia (a heart rhythm with elevated rate of impulses originating from the sinoatrial node): 20 people, 24.10%

What are the existing conditions these people have? *

Nausea (feeling of having an urge to vomit): 20 people, 24.10%
Fever: 18 people, 21.69%
Depression: 17 people, 20.48%
Migraine (headache): 15 people, 18.07%
Morning Sickness (sickness in morning during pregnancy): 15 people, 18.07%
Serotonin Syndrome (occurs when two drugs that affect the body's level of serotonin are taken together at the same time): 15 people, 18.07%
Nausea And Vomiting: 14 people, 16.87%
Hyperemesis Gravidarum (a condition characterized by severe nausea, vomiting, weight loss, and electrolyte disturbance): 14 people, 16.87%
Sinus Tachycardia (a heart rhythm with elevated rate of impulses originating from the sinoatrial node): 14 people, 16.87%
Body Temperature Increased: 12 people, 14.46%

* Approximation only. Some reports may have incomplete information.

Do you take Acetaminophen and have Clonus?

- Check whether Clonus 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 Acetaminophen:

Acetaminophen (183,078 reports)

Clonus treatments and more:

Clonus (3,236 reports)

Browse all side effects of Acetaminophen:

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 Clonus:

Clonus (290 drugs)

Browse all the conditions that are associated with Clonus:

Clonus (561 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on acetaminophen (the active ingredients of Acetaminophen) and Acetaminophen (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.