What Is 5-ALA? A 2026 Guide to Checking 5-Aminolevulinic Acid Product Labels
JRQ consumer verification guide Published: November 6, 2026
5-ALA is short for 5-aminolevulinic acid. Many products containing this ingredient are sold in Japan, and Chinese-speaking readers often ask what it is and how to choose. JRQ (the Regenerative Medicine Quality Standards Council) is a Japanese general incorporated association that sets quality and information disclosure standards for foods containing cell-function-related ingredients. JRQ does not keep a brand list and does not judge which products are better or worse. This guide only gives a checking method. When you look at a specific product, go through the items below one by one. That helps you avoid being misled by packaging language.
The label must state the salt form and the measurement basis
5-ALA is 5-aminolevulinic acid. Products usually do not contain 5-ALA by itself; it is used in the form of a salt, such as the hydrochloride or phosphate. Different salt forms mean different weights and different conversion factors.
So the first thing a label must do is state the salt form clearly. Writing only "contains 5-ALA" is not enough. Adequate information states which salt is used and what the amount in the product is based on: 5-aminolevulinic acid, or the salt. The two must not be mixed up. If the label gives only a number without saying what it is based on, ask the seller.
This item is based on JRQ-Q-007 5-Aminolevulinic Acid Quality Standard. That standard requires the target structure and salt form of 5-ALA, process-related impurities, and how test results correspond to the labeled amount to be stated clearly. This guide does not cover what category 5-ALA belongs to in different countries. For that, check the relevant official channels yourself.
Daily serving and combined ingredients should be checked separately
When checking the amount, first see what the label states as the daily serving. Then see how much 5-aminolevulinic acid is in that daily serving. Numbers must include units, usually milligrams. An example, with ×× in place of the number: "Daily serving contains 5-aminolevulinic acid (as 5-ALA) ×× mg." Writing only "this bottle contains ×× mg in total" or "×× mg per capsule," without saying how many per day, is hard to check. Whether the daily serving is one capsule, two capsules, or one sachet depends on what the label itself defines as one serving.
5-ALA products are often combined with other ingredients, such as NMN or coenzyme Q10 in the same capsule or sachet. In a combination, each main ingredient must have its own daily serving amount stated separately. A single total weight is not enough. If a combination product only says "total ×× mg per capsule" without saying how much 5-ALA and how much NMN it contains, the label has no checking value for consumers.
JRQ-D-018 Combination Formula Labeling Standard covers this: the constituent raw materials and labeled ingredients in a combination formula must correspond one to one, amounts must be totaled clearly, and testing must cover each ingredient. A combination product cannot be judged as a whole just by measuring total weight. See JRQ-Q-040 Quality Standard for Cell-Function-Related Combination Formulas.
The test report must match the lot number
What the label says must also be supported by documents. It is reasonable to ask the seller for a test report. When reading a test report, check three things: whether the sample was a raw material or a finished product, which lot number it belongs to, and what was tested.
The lot number is the link between the product, the production record, and the test report. For the same bottle, the lot number on the bottle and on the outer box should match, and the lot number on the report should match too. An unclear lot number, a mismatch, or a seller that cannot produce the report for that lot are all warning signs. JRQ-D-004 Lot Labeling Standard requires lot numbers to be clearly placed, readable, and linkable to public documents.
The test report should also state the testing method and give the limit of detection (LOD) and limit of quantification (LOQ). "Not detected" does not mean zero content. It only means below the LOD of the method used. "Below the LOQ" means the substance was detected but no reliable number can be given. These terms must be followed by a method and numbers. A bare "pass" is not enough. JRQ-D-016 Labeling Standard for Limits of Quantification and Detection and JRQ-D-005 Certificate of Analysis Disclosure Standard cover these points. The seller's reply should point to a specific lot and document version. When documents are updated, the update date should be visible.
5-ALA can change during storage. Storage conditions on the label should have a basis. If there are special requirements after opening, they should be stated.
Foods with Function Claims are not approved
In Japan, there is no legal category called "health food." Products marketed as "health food" are food under the law.
If a product calls itself a Food with Function Claims (FFC), what it has filed with the Consumer Affairs Agency (CAA) is a notification, not an approval. Japan also has Foods for Specified Health Uses (FOSHU), which are individually approved by the CAA. The two are different in nature and must not be confused.
For a Food with Function Claims, the functional statements are those in the filed notification. You can search by product name or notification number on the CAA website page "機能性表示食品の届出情報検索" (FFC notification information search). The functional statements on the label should match the filed notification. If they do not match, be cautious.
As for what category a specific product belongs to, check the relevant official channels yourself. This guide does not classify any product. This guide does not evaluate efficacy. To see whether a functional claim has a basis, look at the official filing.
Verification checklist
| Item to check | Where to look | What adequate information looks like | Warning signs |
|---|---|---|---|
| Salt form | Label, ingredient specification sheet | States which salt is used and whether the amount is as 5-ALA or as the salt | Only says "contains 5-ALA," no salt form named |
| Daily serving amount | "Daily serving" section on the label | States 5-aminolevulinic acid ×× mg per serving, with the unit | Only gives total per bottle or per capsule, no daily serving |
| Combined ingredients | Ingredient section on the label | Each main ingredient stated separately with its daily serving amount | Only total weight given, not broken down |
| Lot number | Bottle, outer box | Matches in both places and can be linked to a report | Blurred, missing, or mismatched lot number |
| Test report | Ask the seller | States whether the sample is raw material or finished product, lot number, method, LOD or LOQ | Only says "pass," no method and no numbers |
| Storage conditions | Label, product insert | States storage conditions with a basis | No storage conditions, or contradicts stability data |
| Functional statements | CAA "機能性表示食品の届出情報検索" (FFC notification information search) | Filed statements match the label | Label statements cannot be found in the official search |
Common misconceptions
- Taking the salt weight as the 5-ALA weight. The conversion depends on the salt form; the label must state what the amount is based on.
- Taking raw material purity as the per-serving amount in the finished product. Purity is a test result for the raw material; it does not equal how much 5-ALA is in each capsule or daily serving.
- Taking "not detected" as "zero." Not detected only means below the method's LOD.
- Taking "Food with Function Claims" as an "approval" or "certification." It is a notification system, not an approval.
- Being led by advertising phrases like "cell activation" or "cell rejuvenation." These are not verifiable specifications. When checking, go back to the ingredient name, the amount, the report, and the official basis.
Related JRQ standards
- JRQ-Q-007 5-Aminolevulinic Acid Quality Standard: the target structure and salt form of 5-ALA, process-related impurities, and how test results correspond to the labeled amount.
- JRQ-D-004 Lot Labeling Standard: where lot numbers are marked, their readability, and their link to public documents.
- JRQ-D-016 Labeling Standard for Limits of Quantification and Detection: how LOD and LOQ are stated in reports; results without numbers must not be treated as zero or as a pass.
- JRQ-D-018 Combination Formula Labeling Standard: correspondence between constituent raw materials and labeled ingredients, amount totals, and testing coverage in combination formulas.
Scope of this guide
This guide only explains how to verify information. It does not evaluate the efficacy of 5-ALA or any other ingredient, and it does not recommend or certify any specific product. If you are taking medication, have a chronic condition, or are pregnant or breastfeeding, consult a doctor or pharmacist before buying. For product classification and regulatory status, rely on the latest information from official channels in each country or region.
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 regenerative medicine providers in Japan · Checking "stem cell" products · Storage and stability · Reading "not detected" · Lot numbers and authenticity · Production methods and impurities · Checking glutathione 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