In context
Follistatin is a protein involved in growth-factor regulation. An analytical investigation tested products sold as follistatin-344 and found substantial differences between labels and contents. [1]
At a glance
- Type
- Protein preparation
- Regulatory context
- The cited source describes research, not a determination of present marketing authorisation. Country, formulation and indication must be checked separately.
- Evidence
- Only nine of 17 tested products contained follistatin. The study concerns identity and detection, not evidence that such products safely increase muscle mass.
How to interpret this evidence
Only nine of 17 tested products contained follistatin. The study concerns identity and detection, not evidence that such products safely increase muscle mass. [1]
Safety and clinical context
The evidence described here does not establish safety for unsupervised use. Product identity, route, formulation, interactions and long-term effects cannot be inferred from a study category.
Evidence and authorisation depend on the product, formulation, indication and country. US labelling does not establish Thai authorisation. This guide is educational and is not a dosing or self-treatment protocol.
Primary sources
Read the underlying source and its limitations. A study citation does not by itself establish efficacy or approval.
- Detection of black market follistatin 344. pubmed.ncbi.nlm.nih.gov