l carnitine and synthroid does interfere with The Complex Web of Interferences Thyroid Function Tests Role of carnitine in disease – l carnitine interactions l-carnitine interaction

Serotonin receptors exist on bone cells, and altered serotonin signaling may influence bone metabolism

9% use it for 45+ days[] These safe therapeutic doses can significantly deplete glutathione in women who already have low baseline levels.[] Healthy individuals can tolerate up to 4g/day with only modest glutathione decrease, but individuals with compromised glutathione experience significant depletion even at therapeutic doses

Patel YC, Wheatley T, Zingg HH

Theres no strong clinical evidence favoring one time over the other

What's in it Active ingredients (for skin lightening/brightening): Glutathione, Snow White, Blend of Natural Oils, Pink Mica Powder