This effect is not unique to retatrutide
Although there is a broad clinical spectrum of glutathione synthetase deficiency, manifestations usually include hemolytic anemia, often include metabolic acidosis, and sometimes include progressive neurologic symptoms as well as other systemic signs (eg, respiratory distress, sepsis, hyperbilirubinemia) (62
Weeks 1 through 6: 2mg weekly Same starting dose as the standard schedule, but with two extra weeks of adaptation
Preclinical studies have found that berberine increases the number of tyrosine hydroxylase (TH)-positive neurons in the substantia nigra, at the same time, berberine also increases striatum dopamine, norepinephrine, 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid levels (Shin et al., 2013)
If you are already using compounded semaglutide injection or oral semaglutide, berberine might be considered a complementary supplement rather than a replacement for GLP-1 therapy