Theanine vs. Valium: side effect and effectiveness comparison - a phase IV clinical study


We compare the side effects and drug effectiveness of Theanine and Valium. The phase IV clinical study is created by eHealthMe based on reports (from sources including the FDA) of 142,875 people who take Theanine and Valium, and is updated regularly. You can use the study as a second opinion to make health care decisions.

Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI algorithms, eHealthMe is running millions of phase IV trials and makes the results available to the public. Our original studies have been referenced on 600+ medical publications including The Lancet, Mayo Clinic Proceedings, and Nature.

On Mar, 25, 2023

142,875 people who take Theanine and Valium are studied.

What is Theanine?

Theanine has active ingredients of theanine. It is often used in insomnia. eHealthMe is studying from 718 Theanine users for its effectiveness, alternative drugs and more.

What is Valium?

Valium has active ingredients of diazepam. It is often used in stress and anxiety. eHealthMe is studying from 46,103 Valium users for its effectiveness, alternative drugs and more.

Number of reports submitted per year:

Theanine vs Valium drug comparison reports.

Drugs being compared in this study:

  • Theanine (theanine)
  • Valium (diazepam)

Most common side effects of the drugs, overall:

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Most common side effects of the drugs, in long term (1+ years) use:

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Drug effectiveness:

  • not at all: 2.19 %
  • somewhat: 29.93 %
  • moderate: 36.5 %
  • high: 25.55 %
  • very high: 5.84 %
  • not at all: 3.3 %
  • somewhat: 21.86 %
  • moderate: 34.74 %
  • high: 27.15 %
  • very high: 12.95 %

Want to compare Theanine with Valium?

Personalize this study to your gender and age (0-99+).

How to use the study?

You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.

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Alternative drugs to, pros and cons of:

Common Valium side effects:

Browse all side effects of Valium:

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How the study uses the data?

The study is based on theanine and diazepam (the active ingredients of Theanine and Valium, respectively). Other drugs that have the same active ingredients (e.g. generic drugs or brand names) are also considered. Dosage of drugs is not considered in the study.

Who is eHealthMe?

With medical big data and proven AI 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 600+ 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: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on 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.

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