Choosing A Blood Sugar Supplement: Seven Checks

Brand comparisons go stale in weeks. Formulas change, prices change, and a table ranking six products is out of date before it is finished. A checklist does not go stale, because it asks questions about the label in front of you rather than about a product somebody wrote about last spring.

It also removes the part of the decision that sellers control. A comparison table is only as honest as whoever built it, and almost all of them are built by someone with a preferred answer. Seven questions you ask yourself cannot be gamed by a seller who has never met you.

The checks below are ordered so that the fastest disqualifying ones come first. If a label fails check one, checks four through seven do not need answering.

Three clear passes, four failures. Scored the same way any other label on this shelf would be scored.

Checks one and two are really one failure with two consequences. There is no panel, so there is no amount, so no comparison with any published trial can be made. Everything this website does with trial doses is an attempt to work around that rather than a way of closing it.

Check three is the most interesting failure on this shelf and the reason this product is worth writing about at all. The front of the bottle sells healthy glucose metabolism. The seven plants named are gotu kola, Chinese hawthorn, horse chestnut, stone root, motherwort, butcher’s broom and grape seed, which is the chronic venous insufficiency set exactly as European phlebology has used it since the 1980s. Two of them have been pointed at a blood sugar outcome and neither moved it.

Check five follows from the first two and from the format. The horse chestnut trials used 50 mg of aescin twice daily. The grape seed trial used 300 mg a day. The gotu kola glycaemic trial used 1,200 mg a day for six months. Two drops of a seven-extract liquid is a different order of magnitude, and without a panel the distance cannot even be measured.

Check four is a genuine pass and it is not trivial. Naming the plant part matters more in this field than almost anything else a label can do: nettle root and nettle leaf support entirely different literatures, and a great many labels in this category name neither. This one gives the part and the Latin name for six of the seven.

Check six is the strongest thing about this purchase. A telephone desk that answers, a written return address given on the call, and a return window printed where a buyer can read it before paying. The evidence that it answers comes from the distributor’s own lowest-scoring reviewer, which is the most credible place for that evidence to come from.

Check seven splits. Traceability passes: there is a lot code, and a bottle can be tied to a production run. Identity fails: there is no manufacturer name and no address anywhere on the label. Those are different properties and a scorecard that merged them would be less useful.

The checklist is the takeaway and the score above is only an illustration of it. Run it on the next label you pick up and two things usually happen.

The first is that checks one and two eliminate a surprising proportion of the shelf in under a minute, which is the whole point of putting them first. The second is that check three catches products a buyer would otherwise have bought, because it is the only check that compares the front of a box with the back of it.

A product scoring six or seven is worth its price argument. A product scoring three, like this one, is a reasonable purchase for somebody who knows exactly which three, and a poor one for somebody who assumed it scored seven.

Whether anything in a bottle works. Every one of the seven checks is about disclosure, traceability and consistency, because those are the properties a reader can assess from outside. None of them measures an effect.

A product could pass all seven and do nothing. A product could fail four, like this one, and still be a perfectly pleasant daily habit for somebody whose real interest is circulation rather than glucose. The checklist narrows the field; it does not make the decision.

And it says nothing about whether a supplement is the right response to the problem at all. For readings that are genuinely out of range, that question belongs with somebody who can order a laboratory test, and MedlinePlus on prediabetes sets out what the interventions with the strongest evidence behind them actually are.