Manchester Peptides catalogue profile
T4
T4 is catalogue shorthand commonly used for levothyroxine, a prescription thyroid-hormone medicine. The original label must be checked for the precise ingredient and strength.
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Prices shown are the current catalogue guide prices.50 tablets · 100 mcg
T4
Product information
T4 is catalogue shorthand commonly used for levothyroxine, a prescription thyroid-hormone medicine. The original label must be checked for the precise ingredient and strength.
For research and reference purposes only. Listing a product does not establish suitability for medical use.Plain-English identity
What is T4?
The entry above identifies the compound or catalogue name. Published findings for a molecule do not establish the identity, effects or quality of this particular listed preparation.
Third-party documentation
Certificates of Analysis
Reference reports concern the named submitted samples. A catalogue batch match has not been established; check the strength and source on each report.This should be treated as “not displayed”, not as evidence that analytical verification exists.
Browse all available COAsLast reviewed 10 October 2026. Research and reference information only. This page does not provide dosing instructions, treatment recommendations or medical advice. Not for human or veterinary consumption.