Cod liver oil and Nightmares - a phase IV clinical study of FDA data

Summary:

Nightmares is reported as a side effect among people who take Cod liver oil (cod liver oil), especially for people who are female, 60+ old, also take Sinemet, and have Parkinson's disease.

The phase IV clinical study analyzes which people have Nightmares when taking Cod liver oil. It is created by eHealthMe based on reports of 3,522 people who have side effects when taking Cod liver oil from the FDA, and is updated regularly.

What is Cod liver oil?

Cod liver oil has active ingredients of cod liver oil. It is often used in joint pain. eHealthMe is studying from 3,636 Cod liver oil users. Check the latest studies of Cod liver oil.

What is Nightmares?

Nightmares (unpleasant dreams) is found to be associated with 1,318 drugs and 1,914 conditions by eHealthMe. Check the latest studies of Nightmares.

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

3,522 people reported to have side effects when taking Cod liver oil.
Among them, 31 people (0.88%) have Nightmares.

Among these 31 people:

What is the gender of people who have Nightmares when taking Cod liver oil? *

female: 53.85 %
male: 46.15 %

What is the age of people who have Nightmares when taking Cod liver oil? *

What are other drugs people take besides Cod liver oil? *

What are other side effects people have besides Nightmares? *

Weakness: 12 people, 38.71%
Tremor (trembling or shaking movements in one or more parts of your body): 11 people, 35.48%
High Blood Pressure: 10 people, 32.26%
Sleep Apnea Syndrome: 10 people, 32.26%
Confusional State: 8 people, 25.81%
Pain In Extremity: 8 people, 25.81%
Lung Disorder (lung disease): 7 people, 22.58%
Hypotension (abnormally low blood pressure): 7 people, 22.58%
Memory Loss: 7 people, 22.58%
Hallucinations (sensations that appear real but are created by your mind): 7 people, 22.58%

What are the existing conditions these people have? *

Varices Oesophageal (enlarged and swollen veins at the bottom of the oesophagus, near the stomach): 7 people, 22.58%
Hypotension (abnormally low blood pressure): 7 people, 22.58%
Glaucoma (increased fluid pressure in the eye with vision loss): 7 people, 22.58%
Hallucinations (sensations that appear real but are created by your mind): 7 people, 22.58%
High Blood Cholesterol: 7 people, 22.58%
Delusion (a false belief or opinion): 7 people, 22.58%
Parkinson's Disease: 7 people, 22.58%
Malaria (a parasitic disease due to mosquito bite): 4 people, 12.90%
Progressive Multiple Sclerosis (chronic autoimmune disease of the central nervous system in which gradual destruction of myelin occurs in patches throughout the brain or spinal cord): 4 people, 12.90%
Relapsing-Remitting Multiple Sclerosis (reoccurrence of an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged): 4 people, 12.90%

* Approximation only. Some reports may have incomplete information.

Do you take Cod liver oil and have Nightmares?

- Check whether Nightmares 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 Cod liver oil:

Cod liver oil (3,636 reports)

Nightmares treatments and more:

Nightmares (42,077 reports)

Browse all side effects of Cod liver oil:

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 Nightmares:

Nightmares (1,318 drugs)

Browse all the conditions that are associated with Nightmares:

Nightmares (1,914 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on cod liver oil (the active ingredients of Cod liver oil) and Cod liver oil (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.