Background:This study reports a literature review aimed to assess studies related to the efficacy of various herbs in diabetes mellitus used in Bhutan. The incidence of Diabetes Mellitus is rising and many of the diabetics frequently use herbal treatments along with modern medical treatment for glyceamic control and improving their well-being. Methods: An electronic database (Pub med) was searched for 2002-2014 period and 31 related articles were assessed. Result: Many studies-mostly animal trials- have been conducted in this field. Among the herbs, we searched for Phyllantus emblica Linn., Curcuma longa Linn., Berberies aristata Berberidaceae, Tribulus terristries Linn., and Thlaspi arvense Linn. Their chemical compositions, ethno medical uses and anti diabetic activities were summarized. In the search using the keywords ‘phyllantus emblica and diabetes mellitus’’ 19 articles were found. Likewise 48 articles were found with the keyword ‘curcuma longa and diabetes mellitus’ but only 45 articles were of within 2002. 2 articles were found with the keywords ‘berberies aristata and diabetes mellitus’ and 4 articles with ‘tribulus terristries and diabetes mellitus’. As for the ‘thlaspi arvense and diabetes mellitus’ no articles were available. Conclusion: Almost all ingredients of Churu-5 showed effective result in the study done by others.