Also found this article...shoots holes in most of the hype.... The journal is for psychiatrists....bottom line, tests so far show the placebo works as well as the deplin....and there's no strong indication that the deplin does anything more than a healthy diet, with sufficient frolic acid, does.....
Deplin: Is it Just Folate by Another Name?
http://www.thecarlat...me-free-article
From the article:
Patients are probably asking you about Deplin, or L-methylfolate, a version of folic acid that is being marketed by Pamlab as an adjunctive treatment for depression. In a prior issue of TCPR (June 2009) we reviewed available information on Deplin, concluding that there’s little evidence it is any more helpful for depression than much cheaper folic acid. Have we learned anything new in the last two years?
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The promotional literature for Deplin, as well as several articles published over the last few years (many underwritten by Pamlab), imply that L-methylfolate is essential for BH4 synthesis, and that it is the only form of folate that can cross the blood-brain barrier. However, neither of these propositions is entirely true.
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But is any of this even relevant for neurotransmitter synthesis? Probably not, since it’s well known that the CSF folate level stays at a relatively constant concentration across wide variations in the serum folate (and, presumably, L-methylfolate) level (Obeid et al, Clin Chem 2007 53(2):326–333). So for the vast majority of our patients—except for those eating a folate-free diet for four months, perhaps—there’s probably sufficient folate in the brain for monoamine synthesis, regardless of serum folate status.
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In the first study, 148 patients with SSRI-resistant depression were randomized to one of three groups. In each group, patients continued their SSRIs and used Deplin or placebo as an adjunct: 1. Deplin 7.5 mg/d for 30 days, then 15 mg/d for 30 days; 2. placebo for 30 days, then Deplin 7.5 mg/day for 30 days; or 3. placebo for 60 days.
There was no statistically significant difference in outcomes among any of the three groups.
Thus, we have one positive study, and one larger negative study. Neither study compared Deplin with generic folic acid—and such a study is unlikely to be done (presumably because Pamlab is concerned that folic acid would be equivalent to Deplin).
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