S-Adenosyl Methionine
is a metabolite of methionine,
an essential amino acid found naturally in all human cells.

Look for a full-elemental, pharmaceutical grade, stabilized version. When combined with glucosamine it can positively affect joint strength, brain metabolism, liver function and contribute to diminishing the aging process.

SAM-e also has a calming effect AND it's good for your immune system! Go get some!

(* I trust the Jarrow Naturals label implicitly.)