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In practice, if you have a strong relationship with a university lab and the underlying science is upstream of your product, STTR is often the better fit

For example, there is a 1998 study that explored the effects of copper tripeptide, vitamin C, tretinoin, and melatonin on skin repair and collagen synthesis

Wessner B, Strasser EM, Spittler A, Roth E (2003) Effect of single and combined supply of glutamine, glycine, N-acetylcysteine, and R, S-alpha-lipoic acid on glutathione content of myelomonocytic cells

Because amylin slows gastric emptying, bloating and fullness after meals can be more pronounced than with GLP-1 drugs alone

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