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Reading the comments on this page has helped me to understand I am not alone with this reaction

[DOI] [PMC free article] [PubMed] [Google Scholar] 49
One of the more common cardiovascular system side effects is a slightly faster heart rate

321(g)(1), because they are intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease and/or intended to affect the structure or function of the body." FDA's letters to the other manufacturers are similar in their complaints about why their products fall under the agency's regulatory oversight and why the companies are not allowed to market them, despite their oft-cited claims that the products, especially the triple agonists, are for research only

Targeted tissue repair and inflammation support

10.1186/1754-1611-7-21 67 PangY.ZhangW.ZhaoY.HaoH.WangH.LiangJ