Co-codamol and Drowsiness - a phase IV clinical study of FDA data

Summary:

Drowsiness is reported as a side effect among people who take Co-codamol (acetaminophen; codeine phosphate), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Diazepam, and have Neuralgia.

The phase IV clinical study analyzes which people have Drowsiness when taking Co-codamol. It is created by eHealthMe based on reports of 1,873 people who have side effects when taking Co-codamol from the FDA, and is updated regularly.

What is Co-codamol?

Co-codamol has active ingredients of acetaminophen; codeine phosphate. It is often used in pain. eHealthMe is studying from 2,364 Co-codamol users. Check the latest studies of Co-codamol.

What is Drowsiness?

Drowsiness is found to be associated with 2,863 drugs and 4,800 conditions by eHealthMe. Check the latest studies of Drowsiness.

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 Jul, 03, 2026

1,873 people reported to have side effects when taking Co-codamol.
Among them, 66 people (3.52%) have Drowsiness.

Among these 66 people:

How long have people been on Co-codamol when they have Drowsiness? *

What is the gender of people who have Drowsiness when taking Co-codamol? *

female: 61.54 %
male: 38.46 %

What is the age of people who have Drowsiness when taking Co-codamol? *

What are other drugs people take besides Co-codamol? *

Diazepam: 15 people, 22.73%
Ibuprofen: 12 people, 18.18%
Codeine: 9 people, 13.64%
Simvastatin: 8 people, 12.12%
Truvada: 7 people, 10.61%
Sertraline: 7 people, 10.61%
Cetirizine Hydrochloride: 7 people, 10.61%
Gabapentin: 6 people, 9.09%
Darunavir: 6 people, 9.09%
Ritonavir: 6 people, 9.09%

What are other side effects people have besides Drowsiness? *

Fatigue (feeling of tiredness): 20 people, 30.30%
Blood Lactate Dehydrogenase Increased: 12 people, 18.18%
Respiratory Depression (respiration has a rate below 12 breaths): 12 people, 18.18%
Abdominal Pain Upper: 12 people, 18.18%
Aggression: 12 people, 18.18%
Aspartate Aminotransferase Increased: 11 people, 16.67%
Amylase Increased: 11 people, 16.67%
Coma Scale Abnormal: 10 people, 15.15%
Stubbornness (dark personality traits): 10 people, 15.15%
Muscle Spasms (muscle contraction): 10 people, 15.15%

What are the existing conditions these people have? *

Neuralgia (pain in one or more nerves): 7 people, 10.61%
Stress And Anxiety: 5 people, 7.58%
Depression: 4 people, 6.06%
Insomnia (sleeplessness): 4 people, 6.06%
Musculoskeletal Pain (pain affects the bones, muscles, ligaments, tendons, and nerves): 4 people, 6.06%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 4 people, 6.06%
Joint Injury: 3 people, 4.55%
Inflammation: 3 people, 4.55%
Fall: 3 people, 4.55%
Renal Cancer Metastatic (cancer of kidney spreads to other part): 2 people, 3.03%

* Approximation only. Some reports may have incomplete information.

Do you take Co-codamol and have Drowsiness?

- Check whether Drowsiness 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 Co-codamol:

Co-codamol (2,364 reports)

Drowsiness treatments and more:

Drowsiness (269,040 reports)

How severe was Drowsiness and when was it recovered:

Drowsiness in Co-codamol

Expand to all the drugs that have ingredients of acetaminophen; codeine phosphate:

Drowsiness and drugs with ingredients of acetaminophen; codeine phosphate (1,316 reports)

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 Co-codamol:

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 Drowsiness:

Drowsiness (2,863 drugs)

Browse all the conditions that are associated with Drowsiness:

Drowsiness (4,800 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on acetaminophen; codeine phosphate (the active ingredients of Co-codamol) and Co-codamol (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.