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J Pharmacol Exp Ther. 1979 Jun;209(3):323-6.

Intestinal absorption of S-adenosyl-L-methionine.

Abstract

The gastrointestinal absorption of S-adenosyl-L-methionine (SAMe) is demonstrated by evaluating plasma levels and gastrointestinal content of the unmodified molecule after oral administration. When [methyl-14C]SAMe is given orally, the radioactivity found in the liver is associated both with SAMe and phosphatidylcholine, a compound known to be derived from the methylation of phosphatidylethanolamine with SAMe as a methyl donor. These results and low plasma levels after the oral administration may be suggestive of a first-pass effect of SAMe characterized by an extensive uptake of the drug by the liver where it is rapidly metabolized.

PMID:
439007
[Indexed for MEDLINE]

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