Disclaimer: The information contained herein should NOT be used as a substitute for the advice of an appropriately qualified and licensed physician or other health care provider. The tool is not a substitute for the care provided… (more)
“In rats, two representative drugs phenobarbital and methylcholanthrene) produced a significant depression of hepatic vitamin A , whereas plasma vitamin A levels remained normal.”
The American journal of clinical nutrition • 1984 | View Paper
“Administration of ethanol, phenobarbital or butylated hydroxytoluene (BHT) each resulted in significantly lower hepatic vitamin A than in untreated controls.”
“The hepatic concentration of vitamin A was significantly reduced in control rats that were given injections of 3-methylcholanthrene, 2-acetylaminofluorene, or phenobarbital.”