Members AreaBBKA News Archive Magazines BBKA Forum BBKA EC and Office Who we are Executive > Link Trustees Compliance ADM BBKA Constitution Charitable Incorporated Organisation Risk Assessments Meeting dates Office Staff Insurance Public Liability Insurance All Risks Insurance Officer Insurance Bee Diseases Insurance Exams and Assessments Exams and Assessments of the BBKA Correspondence courses General Help Membership Classes and benefits Renew Schools Research Members' Resources Asian Hornet FAQs Branch and association resources BBKA Hive keeping record BeeBase Beekeeping Legislation Honey Show FAQs Important Organisations for Beekeepers Leaflets Lecturers & Speakers RSS Feeds for members Winter Colony Survival Survey '18/19 Members' News Members' Events Thymol There is no approved medicine for Nosema since FumidilB was taken off the market a few years ago. Thymol is not approved for the treatment of Nosema. Not only is thymol ineffective against Nosema whether prophylactically or otherwise but it can taint any honey that is on the colony. There are very strict food safety guidelines concerning residues in honey and the Food Standards Agency take a strict line. If your colony has Nosema, or if you have a weak colony that you think may have Nosema, then the best thing you can do is get them onto clean comb. This is best done by the version of the Bailey comb change for weak colonies. This is best done in the spring. - Margaret Murdin, BBKA President