PT - JOURNAL ARTICLE AU - Canan Kuygun Karcı AU - Gonca Gül Celik TI - Nutritional and herbal supplements in the treatment of obsessive compulsive disorder AID - 10.1136/gpsych-2019-100159 DP - 2020 Mar 01 TA - General Psychiatry PG - e100159 VI - 33 IP - 2 4099 - http://gpsych.bmj.com/content/33/2/e100159.short 4100 - http://gpsych.bmj.com/content/33/2/e100159.full SO - Gen Psych2020 Mar 01; 33 AB - Obsessive-compulsive disorder (OCD) is a neuropsychiatric disorder that is characterised by obsessions and compulsions. The recommended treatments for OCD are cognitive– behavioural therapy using exposure and response prevention and/or pharmacotherapy. On the other hand, some nutritional and herbal supplements may be effective in the treatment of OCD. Nutritional and herbal supplements in OCD treatment will be reviewed in this paper. PubMed (Medline), Cochrane Library and Google Scholar databases were reviewed for the topic. There are some supplements that have been researched in OCD treatment studies such as vitamin D, vitamin B12, folic acid, homocysteine, trace elements, N-acetyl cysteine, glycine, myoinositol, St John’s wort, milk thistle, valerian root, curcumin and borage. The effectiveness of herbal and nutritional supplements in the treatment of OCD should be supported with more conclusive evidence.