DPP-4 inhibitors, such as diprotin A, vildagliptin, and evogliptin tartrate, exhibit analgesic effects in rat models of carrageenan-induced sub-chronic inflammatory pain, as well as acute and tonic pain induced by CFA and formalin [36, 37]
PMID: 32370045
Stanier RY, Kunisawa R, Mandel M, Cohen-Bazire G
PT-141 was derived from Melanotan II by removing the cyclic lactam bridge to produce a linear metabolite with reduced MC1R affinity while retaining MC3R and MC4R agonism, effectively separating melanogenic activity from central nervous system-mediated behavioral effects
Oral and sublingual compounded GLP-1 rests on far weaker evidence: these are large peptide molecules that the body absorbs poorly through the mouth and digestive tract, and the compounded oral versions have not been through the testing that would establish how much drug actually reaches the bloodstream
le Roux CW, Aylwin SJB, Batterham RL, Borg CM, Coyle F, Prasad V, et al