I can tell you that these types of questions are hard for us because we do not have any scientific data or studies. The FDA does not have strict oversight over these types of products like prescription medications. The only data I found was that it can be useful in constipation, but there is no conclusive evidence of it helping blood sugar or LDL cholesterol.
Many people feel that these "supplements" are safe because you can buy them over the counter but that is not the case. We don't know if they really work, nor do we know if they interact with other medications.
I use 1 TBSP of apple cider vinegar (ACV) in a shot glass with water and take it along with extra water in the mornings after I've eaten. It works like nothing else has. (The first 1-2 days, I felt like it was cleaning out my system - so be prepared for that.)
Within three months of taking the dose above, and at my next drs. appt., all my numbers dropped (cholesterol, sugar, hbp, liver enzymes), including my weight, along with having extra energy during the day. My senses of smelling, tasting and sight were better than usual too. I had never felt better at 54 y.o. The doctor even said, "whatever you're doing, keep doing it." I like feeling well !
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