Youll notice that those doses are quite a bit higher than the RDA for B12
In litigation filed in early 2026, a major GLP-1 manufacturer alleged that testing of compounded injectable semaglutide products found impurity levels as high as 86%, with compounded oral formulations containing impurities as high as 75%
However, because this excretion accounts for less than 1% of total acylcarnitine elimination in urine [43], it is unlikely that excretion of VPA alone is sufficient to produce carnitine deficiency in well nourished patients [44]
Drug Metab Lett [Internet]
Sanchez-Lopez D, Lestegas-Soto A, Garcia-Vega D, Vinuela J, Reija-Lopez L, Martinez-Cereijo J, et al