Is Stem Cell Treatment in Japan Legitimate? A 2026 Guide to Checking Regenerative Medicine Providers in Japan
JRQ consumer verification guide Published: November 6, 2026
Many readers ask: Is it reliable to go to Japan for stem cell treatment? How do you check whether a provider is legal? JRQ is a private Japanese organization that sets quality standards related to regenerative medicine. We do not recommend any provider or treatment, and we do not evaluate effectiveness, safety, or price. This guide covers one thing only: how to use publicly available information from Japan's system to check a provider yourself.
First, distinguish the two kinds of "regenerative medicine"
In Japan, the term "regenerative medicine" often refers to two different things. The first is treatment provided by medical institutions on their own under the Act on the Safety of Regenerative Medicine. The second is regenerative medicine products approved under the Pharmaceuticals and Medical Devices Act (PMD Act). If you go to a clinic for stem cell treatment, you are dealing with the first kind, not the second.
The first kind follows this process: a medical institution first goes through review by a certified committee for regenerative medicine, then submits a regenerative medicine provision plan to the Ministry of Health, Labour and Welfare (MHLW). The MHLW website publishes information about institutions that have submitted plans. Note that publication only means "a plan was submitted." It does not mean "effectiveness and safety have been approved."
This committee is not an ordinary ethics committee. It is certified by the MHLW. You can check the list of certified committees on the MHLW website and confirm whether the committee name given by the provider is on the list. If it is not, ask for an explanation.
The second kind is regenerative medicine products approved under the PMD Act. They are regulated as medicines and go through approval before marketing. The two kinds are based on different laws, and the information you can check is also different. Before going to a clinic for treatment, first be clear about which kind you need to check.
Three risk classes and the provision plan number
The Act on the Safety of Regenerative Medicine divides regenerative medicine into Class I, Class II, and Class III, from high risk to low risk. The higher the risk, the stricter the review requirements.
You can directly ask the provider for two pieces of information: the provision plan number, and the name of the certified committee for regenerative medicine that reviewed the plan. Use these two pieces of information to check the provision plan information published on the MHLW website. See whether the provider name, the name of the regenerative medicine technology, and the risk class match. If the provider cannot give a number, or if the number cannot be found, stop and ask questions before going further.
Also ask one more thing: where are the cells cultured and processed? Under this law, cell culture processing facilities need to obtain a license or file a notification. Ask for the facility name and the license or notification document. Do not accept a simple statement like "we meet the standards."
These three things — the provision plan number, the review committee name, and the cell culture processing facility — are the basics. Complete these first, then move on to the written documents below.
In addition to the information above, there are two written documents you should ask for.
The first is the informed consent form. Before treatment, the provider should give you a written document that states the treatment content, risks, possible problems, and that results are not guaranteed. Verbal promises do not count.
The second is the contact and handling process for when problems occur. The informed consent form or the provider's explanation should clearly state who to contact and what the process is if something goes wrong. Be wary if the only answer is "nothing will go wrong."
Verification checklist
| Item to check | Where to look | What adequate information looks like | Warning signs |
|---|---|---|---|
| Provision plan number | Information page for regenerative medicine provision plans published on the MHLW website | Provider name, technology name, and risk class match the published information | No number given, or the number given cannot be found on the published page |
| Review committee name | List of certified committees for regenerative medicine published by the MHLW | Committee name is on the certified list and matches the provision plan | Only says "expert review" without giving a specific name |
| Cell culture processing facility | Written explanation from the provider, or facility license or notification document | Facility name and license or notification number can be verified | Only says "proper laboratory" without giving information |
| Informed consent form | Provided by the provider before treatment | States treatment content, risks, and that results are not guaranteed | Verbal promise of results, no written document |
| Contact and handling if problems occur | Informed consent form or provider explanation | Clear contact person and handling process | Only says "nothing will go wrong," with no follow-up arrangement |
| Provider advertising | Provider website or intermediary materials | Does not claim "cure-all" or "guaranteed results" | Uses "cure," "cure rate," or "guaranteed effective" |
| Certification claims | Provider website or on-site display | Certification name, issuing body, and what it applies to are clearly stated | Only shows a logo without explaining the source of certification |
Common misconceptions
- Misconception: If it appears on the MHLW website, the treatment is safe and effective. Reality: Publication only means a provision plan was submitted. It is not an approval of effectiveness or safety.
- Misconception: If an intermediary says "approved by the Japanese government," you can feel safe. Reality: What is approved is the provision plan, not a guarantee of treatment results.
- Misconception: Stem cell treatment is an approved medicine on the market. Reality: Treatment provided by a medical institution under the Act on the Safety of Regenerative Medicine is not the same as a regenerative medicine product approved under the PMD Act.
- Misconception: Culture medium (conditioned medium) or exosome products can be used as treatment. Reality: In Japan, when these are sold as cosmetics or food, they cannot make drug-like claims, and they cannot replace medical treatment.
- Misconception: Claims like "cure-all" or "guaranteed results" are normal advertising. Reality: Treatment results vary from person to person. Any claim that guarantees results is suspect.
- Misconception: If the provider gives an informed consent form, there is no risk. Reality: An informed consent form is a process requirement, not a guarantee of zero risk.
Related JRQ standards
JRQ has developed some quality management standards for cell processing. You can use them as references when checking provider claims. They are private standards set by JRQ and do not replace law.
- JRQ-P-005 Cell Culture Environment Control Standard: a reference for environmental management in cell processing facilities.
- JRQ-P-006 Aseptic Processing Standard: a reference for aseptic operations during cell processing.
- JRQ-P-029 Traceability Standard: a reference for record traceability at each step from receipt to delivery of cells.
- JRQ-D-014 Certification and Accreditation Labeling Standard: for checking the certification or accreditation name, issuing body, and object of certification when a provider makes certification claims.
If a provider claims to meet JRQ's P-series standards, you can ask to see the records of how the standard was applied or the inspection results for those standards. But even if a provider meets these standards, that only means there is a reference basis for the processing step. It does not mean the treatment is effective.
Scope of this guide
This guide only explains how to check information. It does not evaluate the effectiveness or safety of any regenerative medicine, and it does not recommend or certify any specific provider or treatment.
Whether this kind of treatment is suitable for you should first be discussed with the doctor who is currently treating you. This is especially important for people taking medication or with chronic conditions. Do not use this guide as a substitute for your doctor's judgment. JRQ does not provide a list of providers, and it does not answer which treatment is better. Use the methods in this guide to check for yourself, and do not rely on a single claim.
Other guides: Reading "research shows" claims · Checking safety information · Checking label dosage information · Ingredient identity and isomers · New ingredients: status and labeling · Checking comparison claims · Checking combination formulas · Checking certification claims · Checking overseas raw material claims · Checking "stem cell" products · Storage and stability · Reading "not detected" · Lot numbers and authenticity · Production methods and impurities · Checking glutathione labels · Checking 5-ALA labels · Reading advertising terms · Questions to ask sellers · Checking cell storage services · Checking PQQ labels · Phosphatidylserine labels · Alpha-lipoic acid labels · Checking ergothioneine labels · Checking plasmalogen labels · Checking quercetin labels · Checking creatine labels · Checking sesamin labels · Berberine labeling and status