Neither my husband nor I have taken Diabetone or any other supplements. Should we ever plan to do so, I would begin by recording sugar levels on a very regular basis over at least a month, then start the supplement, continue the regular testing and see if there was any real difference.
Curious, I looked it up. You can find it here,
https://www.vitabiotics.com/Diabetone/Plus I think the key phrase in all the puff about it is,
"It is not a treatment for diabetes or metabolic control, but intended to help maintain overall health and wellbeing." Personally, I would go for a walk in the sunshine, phone a friend, eat something highly nutritious, dream about a holiday, read a good book or any number of other things to maintain health and well being before I started on expensive supplements with vague promises attached.
Sally