The ads also say the claims havent been evaluated by the Food and Drug Administration
While rare, taking too much vitamin A, D, or E can lead to potentially harmful side effects ( Alternatively, taking high doses of non-synthetic vitamin K seems to be relatively harmless, which is why an upper intake level (UL) has not been set for this nutrient ( Upper intake levels are set to indicate the maximum dose of a nutrient thats unlikely to cause harm for nearly all people in a general population ( SUMMARY Water-soluble vitamins are readily excreted from the body, while fat-soluble vitamins can be stored in tissues
Combining multiple aggressive lightening agents (e.g., highstrength hydroquinone + frequent chemical peels + glutathione) without supervision, which may increase irritation and posttreatment sensitivity
Disease Management and Clinical Outcomes , 4 (1), 136-141
doi: 10.1002/mc.23301 81 HabibTNAltonsyMOGhanemSASalamaMSHosnyMA