SAMe was not different from placebo and established antidepressants .
The exception was that compared to imipramine , fewer participants experienced troublesome adverse effects when treated with parenteral SAMe .
BACKGROUND Depression is a recurrent illness with high rates of chronicity , treatment-resistance and significant economic impact .
There is evidence in the literature that S-adenosyl methionine ( SAMe ) , a naturally occurring compound in the human body , has antidepressant efficacy .
This product may be an important addition to the armamentarium of antidepressant agents .
OBJECTIVES To assess the effects of SAMe in comparison with placebo or antidepressants for the treatment of depression in adults .
Efficacy and tolerability of oral and intramuscular S-adenosyl-L-methionine 1,4-butanedisulfonate (SAMe) in the treatment of major depression: comparison with imipramine in 2 multicenter studies.
BACKGROUND S-Adenosyl-L-methionine ( SAMe ) , a natural compound , is the most important methyl donor in the central nervous system . In several clinical trials , SAMe showed antidepressant activity . OBJECTIVE Two multicenter studies were conducted in patients with a diagnosis of major depressive episode [ baseline score on the 21-item Hamilton Depression Rating Scale ( HAM-D ) > or=18 ] to confirm the efficacy and safety of SAMe in the treatment of major depression . In the first study ( MC3 ) , 1600 mg SAMe/d was given orally ; whereas , in the second study ( MC4 ) , 400 mg SAMe/d was given intramuscularly . In both studies , the effects of SAMe were compared with those of 150 mg imipramine/d given orally in a double-blind design . DESIGN In  MC3 , 143 patients received oral SAMe and 138 patients received imipramine for 6 wk . In  MC4 , 147 patients received SAMe intramuscularly and 148 patients received imipramine for 4 wk . In both studies the 2 main efficacy measures were the final HAM-D score and the percentage of responders to Clinical Global Impression at the endpoint . Secondary efficacy measures were the endpoint Montgomery-Asberg Depression Rating Scale scores and the percentage of responders , responders being those patients showing a decrease in HAM-D score of > or=50 % from baseline . RESULTS In both studies , the results of SAMe and imipramine treatment did not differ significantly for any efficacy measure . However , significantly fewer adverse events were observed in the patients treated with SAMe . CONCLUSIONS The antidepressive efficacy of 1600 mg SAMe/d orally and 400 mg SAMe/d intramuscularly is comparable with that of 150 mg imipramine/d orally , but SAMe is significantly better tolerated
SAMe was not different from placebo and established antidepressants .
The exception was that compared to imipramine , fewer participants experienced troublesome adverse effects when treated with parenteral SAMe .
BACKGROUND Depression is a recurrent illness with high rates of chronicity , treatment-resistance and significant economic impact .
There is evidence in the literature that S-adenosyl methionine ( SAMe ) , a naturally occurring compound in the human body , has antidepressant efficacy .
This product may be an important addition to the armamentarium of antidepressant agents .
OBJECTIVES To assess the effects of SAMe in comparison with placebo or antidepressants for the treatment of depression in adults .