Injecting more frequently than every 3 hours produces diminishing returns because the somatotroph cells have not had time to resynthesize and store growth hormone for the next pulse
Also, the meta-analysis of two studies (27, 31) revealed that using NAC for five to eight weeks is significantly effective (MD = -2.95, 95% CI: [-5.87, -0.04], p-Value = 0.05, I2 = 0%) ( Figure 4 ), while not significantly effective for four weeks or less (MD = 0.74, 95% CI: [-2.27, 3.74], p-Value = 0.63, I2 = 0%) ( Figure 5 )
Acetyl-L-carnitine side effects and safety Although ALCAR does not have an established tolerable upper intake level, doses of 3 grams or more per day can cause nausea, vomiting, abdominal cramps, diarrhea, and a fishy body odor
Twenty four C57BL/6 mice (female, 7 to 8 weeks old, only mice in telogen phase could be used for this study) in 4 randomized groups (n = 6) were used to study the hair-promoting activity of morroniside
L-carnitine uptake by mouse brain synaptosomal preparations: competitive inhibition by GABA