Medicinal value is stated to be between 10-16+ UMF, although posters with success have used the 16+ UMF strength.
the most important thing to remember is to look for genuine Manuka Honey with an UMF rating as this is a trademarked standard that was developed by Dr Molan and used by the NZ beekeepers to ensure that the consumer knows their brand has been properly tested. So, you should be able to find UMF 16+ prominently on the label and it should be a product of New Zealand.
There is another rating called MGO which I know nothing about but I believe is also a tested rating system. The numbers for this range from 100 to over 450. Again, ensure the rating is clearly labelled and the honey is produced in New Zealand.
There is more information regarding dose and how to order on another thread in this section called "Relief" that will help answer your other questions. The link is below.
http://oralcancersupport.org/forums/ubbthreads.php?ubb=showflat&Number=135644#Post135644Once last point. You can order Manuka Honey through Amazon which donates a proportion of sales to OCF so if you order through the link found at the top of the forum page you will benefit us all.
