Tryptophan and Drowsiness - a phase IV clinical study of FDA data

Summary:

Drowsiness is reported as a side effect among people who take Tryptophan (l - tryptophan), especially for people who are female, 60+ old, have been taking the drug for 6 - 12 months also take Lyrica, and have Asthma.

The phase IV clinical study analyzes which people have Drowsiness when taking Tryptophan. It is created by eHealthMe based on reports of 636 people who have side effects when taking Tryptophan from the FDA, and is updated regularly.

What is Tryptophan?

Tryptophan has active ingredients of l - tryptophan. eHealthMe is studying from 700 Tryptophan users. Check the latest studies of Tryptophan.

What is Drowsiness?

Drowsiness is found to be associated with 2,865 drugs and 4,797 conditions by eHealthMe. Check the latest studies of Drowsiness.

On Jul, 21, 2026

636 people reported to have side effects when taking Tryptophan.
Among them, 21 people (3.3%) have Drowsiness.

Among these 21 people:

How long have people been on Tryptophan when they have Drowsiness? *

What is the gender of people who have Drowsiness when taking Tryptophan? *

female: 72.22 %
male: 27.78 %

What is the age of people who have Drowsiness when taking Tryptophan? *

What are other drugs people take besides Tryptophan? *

What are other side effects people have besides Drowsiness? *

Fatigue (feeling of tiredness): 9 people, 42.86%
Stress And Anxiety: 8 people, 38.10%
Pain: 7 people, 33.33%
Feeling Abnormal: 7 people, 33.33%
Headache (pain in head): 7 people, 33.33%
Insomnia (sleeplessness): 7 people, 33.33%
Weight Increased: 6 people, 28.57%
Nasopharyngitis (inflammation of the nasopharynx): 6 people, 28.57%
Fall: 6 people, 28.57%
Abdominal Pain Upper: 5 people, 23.81%

What are the existing conditions these people have? *

Asthma: 5 people, 23.81%
Metastatic Neoplasm (spreadable cancer tumour): 4 people, 19.05%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 2 people, 9.52%
Sciatica (a set of symptoms including pain caused by general compression or irritation of one of five spinal nerve roots of each sciatic nerve): 1 person, 4.76%
Schizophrenia (a mental disorder characterized by a breakdown of thought processes): 1 person, 4.76%
Myoclonus (a brief, involuntary twitching of a muscle or a group of muscles): 1 person, 4.76%
Muscle Function Loss: 1 person, 4.76%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 1 person, 4.76%
Migraine (headache): 1 person, 4.76%
Major Depression (a mood state that goes well beyond temporarily feeling sad or blue. it is a serious medical illness that affects one's thoughts, feelings): 1 person, 4.76%

* Approximation only. Some reports may have incomplete information.

Do you take Tryptophan 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 Tryptophan:

Tryptophan (700 reports)

Drowsiness treatments and more:

Drowsiness (269,040 reports)

Browse all side effects of Tryptophan:

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 (2,865 drugs)

Browse all the conditions that are associated with Drowsiness:

Drowsiness (4,797 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on l - tryptophan (the active ingredients of Tryptophan) and Tryptophan (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.