Pevec D, Novinscak T, Brcic L, Sipos K, Jukic I, Staresinic M, Mise S, Brcic I, Kolenc D, Klicek R, Banic T, Sever M, Kocijan A, Berkopic L, Radic B, Buljat G, Anic T, Zoricic I, Bojanic I, Seiwerth S, Sikiric P
Skin has a saturation point
While long-term use has not shown safety concerns in available data, cycling helps prevent metabolic adaptation and may maintain the peptides effectiveness across multiple rounds
However, novel advances have led to more stable and orally bioavailable preparations that may augment this peptides already considerable therapeutic potential, especially as it affects the GI tract
Deficiency can occur due to low dietary intake, especially in vegans, digestive problems, lack of intrinsic factor, certain medications, or age-related absorption decline