I recently was listening to the stronger by science pod and they brought up that capscaisin can activate mtor so I looked into it a bit and it seems like it has potential. I've only ever seen it's inclusion in fat burner. May be some potential for a company to add it into a muscle builder or recomp type product.
Capsaicin mimics mechanical load-induced intracellular signaling events: Involvement of TRPV1-mediated calcium signaling in induction of skeletal muscle hypertrophy
Mechanical load-induced intracellular signaling events are important for subsequent skeletal muscle hypertrophy. We previously showed that load-induced activation of the cation channel TRPV1 caused an increase in intracellular calcium concentrations ([Ca[2+] ...
www.ncbi.nlm.nih.gov
Warming Up to New Possibilities with the Capsaicin Receptor TRPV1: mTOR, AMPK, and Erythropoietin
Transient receptor potential (TRP) channels are a superfamily of ion channels termed after the trp gene in Drosophila that are diverse in structure and control a wide range of biological functions including cell development and growth, thermal regulation, ...
www.ncbi.nlm.nih.gov