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For this study, researchers randomly selected 60 adults who were experiencing their first depressive episode to receive fluoxetine (Prozac), a selective serotonin reuptake inhibitor, or to receive the dietary supplement 5-HTP, for eight weeks. The study was double-blinded, meaning that both treatments looked the same, so neither researchers nor participants knew which medicines were being provided.
Depression ranged from moderate to very severe, and was similar in the fluoxetine and 5-HTP groups. Approximately half of the participants in both treatment groups were classified as having very severe depression, the rest ranged from moderate to severe.
The 5-HTP group received 150 mg of 5-HTP per day in three divided doses for the first two weeks. After the second week, this was doubled to 300 mg per day of 5-HTP, given in three divided doses. After the fourth week, it increased to a final dose of 400 mg per day, taken in three divided doses.
The fluoxetine group received 20 mg of the medication per day during the first 2 weeks. This dose was increased to 30 mg per day after the second week, and increased to a final dose of 40 mg per day after the fourth week.
The authors reported:
According to the study authors, “the therapeutic efficacy of 5-HTP was considered as equal to that of fluoxetine.” These findings are promising, and if you’re interested in trying 5-HTP, you’ll need to work with your healthcare provider to do so safely.
Keep the following in mind when deciding on the appropriate care for you or a loved one who is suffering from depression:
(Asian J Psychiatr 2013;6:29–34)