[Trp3,Arg5]-Ghrelin (1-5) (human, rat) GSWFR H-Gly-Ser-Trp-Phe-Arg-OH (Trp3,Arg5)-Ghrelin (1-5), GSWFR (2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[(2-aminoacetyl)amino]-3-hydroxypropanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-3-phenylpropanoyl]amino]-5-(diaminomethylideneamino)pentanoic acid L-Arginine, glycyl-L-seryl-L-tryptophyl-L-phenylalanyl- Glycyl-L-seryl-L-tryptophyl-L-phenylalanyl-L-arginine