THE TB-500 FIELD GUIDE
Canada. Sport. The details matter.
Check current rules at their source. A product listing, a research paper and a drug authorization are different things.
Plain-language guide · Checked 2026-10-22 · Source links below
← Back to the field guideCheck the exact product
Health Canada uses an eight-digit Drug Identification Number, or DIN, for authorized drug products. Its Drug Product Database lets you search product records. Check the ingredient, strength, maker, form and route, as well as the number. A number on a label should match the actual product.
Authorization is product-specific. It should not be assumed from a company name, an ingredient used in a different medicine or a claim that a business is licensed. If a product is marketed as a natural health product, the separate NPN system applies; that is not a shortcut to approving an injectable drug.
Sources: Health Canada — how to search the Drug Product Database · Health Canada — Drug Product Database search
Read the Canadian advisory
The April 9, 2026 Health Canada advisory is a useful starting point for online injectable peptides. It discusses unauthorized products and includes TB-500. Read the current page directly rather than relying on an old screenshot or a seller’s summary.
The date on this guide shows when we checked the linked material. It is not a promise that rules cannot change. If a seller claims a new authorization, ask for the exact product record and verify it with the regulator.
Sources: Health Canada, April 9, 2026 — online injectable peptide advisory
Athletes: check the rule before use
The 2026 WADA Prohibited List names thymosin beta-4 and derivatives such as TB-500 in section S2.3. This section is prohibited at all times, including outside competition. The list took effect on January 1, 2026.
An athlete should speak with their sport’s anti-doping organization about the rules that apply to them. A seller’s “legal” claim does not answer an anti-doping question. This guide does not provide detection windows, evasion advice or a plan for timing use around tests.
Keep the questions separate
“Can a site list it?”, “Is this product authorized for sale?”, “Does a good trial show a benefit?” and “Is it permitted in my sport?” are four different questions. One yes cannot stand in for the others. Keeping them separate makes it easier to spot a claim that asks you to skip a step.