The Irish Institute of Medical Herbalist (IIMH) was formally incorporated in 1990. Currently the criteria for membership of the IIMH is a BSc (Hons) in Herbal Medicine which includes examinations in medical and herbal studies as well as supervised clinical practice.

Members of the Institute have the letters MIIMH after their names.

The IIMH have developed a BSc in Herbal Science, in conjunction with, Cork Institute of Technology, as part 1 of the training of Medical Herbalists. IIMH is currently developing an MSc course as part 2.