Blood sugar
Supplements for blood sugar balance: chromium, zinc, berberine, cinnamon and alpha-lipoic acid. We explain which forms and doses make sense, what the approved claims really allow and how to fit them into your day.Read more →
Filters
Availability
Brand
Form
Diet
Goal
Price
Choosing blood sugar support supplements without the guesswork
Blood sugar is the glucose in your blood. Carbohydrates from food break down into glucose, and your body uses it as fuel. Insulin, a hormone from the pancreas, moves that glucose into your cells. Most people reach this page for a practical reason: an afternoon energy dip, or cravings an hour after a large meal.
What the approved claims actually allow
In the UK and EU, only a few nutrients may say anything about glucose. Chromium contributes to the maintenance of normal blood glucose levels. Zinc contributes to normal carbohydrate metabolism. Plant ingredients such as cinnamon, berberine and bitter melon carry no approved claim, so we describe what is in the capsule rather than promise a result. You will meet the same nutrients again in our heart and circulation range, because few people look at glucose on its own.
The form and the dose decide what you get
- Chromium: picolinate is the form used in most research. Doses in supplements are usually 100 to 200 micrograms, far above the token 10 micrograms tucked into many multivitamins. See our full range of chromium options.
- Berberine: almost always berberine HCl. The body absorbs it poorly, and one large dose often upsets the stomach, so labels normally split it across two or three meals.
- Cinnamon: Cassia cinnamon contains coumarin, a natural compound with an intake limit. Ceylon cinnamon contains far less, which is why we prefer it for daily use.
- Alpha-lipoic acid: R-ALA is the form your body makes itself. Racemic ALA is half R and half S, so gram for gram it delivers less of the active half.
- Myo-inositol: a mildly sweet powder, often combined with D-chiro-inositol in a 40:1 ratio.
How we choose what goes in this collection
We judge products on three things: the form, the dose and combinations that make sense. For chromium that means a dose in the range actually studied, not a rounding error on a label. For berberine it means a stated berberine HCl content per capsule, so you can split it across meals. We stay brand-neutral: we stock what delivers results, not what pays the best margin, and every product passes our compliance team before it goes live. We test in house and independent labs spot-check batches. You can read how we select brands and products.
Who this collection suits
It suits you if your meals and movement are already reasonable and you want one targeted addition, not a cupboard full of jars. Start with a single product for a few weeks so you can tell what it does. Two to three weeks of consistent use is a fair trial before you judge chromium, and the berberine capsules we stock are usually taken with meals for the same reason.
One honest note. These are food supplements, not medicines. If you take medication that affects blood glucose, speak to your GP or pharmacist before you start, and never change a prescription on your own. Within those limits, a well-dosed single ingredient is a sensible, low-effort addition to a routine that already works for you.
Frequently asked questions
What are blood sugar supplements?
They are food supplements bought by people who want to support the way their body handles glucose from food. Most contain one of two groups. The first is nutrients with a permitted claim: chromium contributes to the maintenance of normal blood glucose levels and zinc contributes to normal carbohydrate metabolism. The second is plant ingredients such as berberine, cinnamon and bitter melon, which have no approved claim and are sold on their ingredient content alone.
Which ingredient should I start with?
Start with one product, not three, so you can judge it. Chromium is the simplest starting point because it carries an approved claim for normal blood glucose. The table shows what each option is and who it tends to suit.
| Ingredient | Usual form | Suits you if |
|---|---|---|
| Chromium | Picolinate capsule | You want the approved glucose claim |
| Zinc | Bisglycinate capsule | Your intake from food is low |
| Berberine | Berberine HCl capsule | You can split doses with meals |
| Cinnamon | Ceylon extract | You want a low-coumarin daily option |
| Alpha-lipoic acid | R-ALA capsule | You also want an antioxidant |
| Myo-inositol | Powder | You prefer a drink to capsules |
How much chromium, zinc and magnesium do adults in the UK need each day?
These are the reference amounts for adults in the UK. They describe what you need from food and supplements together, not a dose that suits a specific goal. Supplement labels often sit above these figures, which is normal for chromium in particular.
| Nutrient | Adult daily amount |
|---|---|
| Chromium | About 25 mcg |
| Zinc, men | 9.5 mg |
| Zinc, women | 7 mg |
| Magnesium, men | 300 mg |
| Magnesium, women | 270 mg |
When is the best time to take them?
It depends on the ingredient, and the reason is practical rather than mysterious. Chromium and zinc are taken with a meal, which is gentler on the stomach. Berberine is normally split across meals, because a single large dose often causes wind or loose stools. Alpha-lipoic acid is usually taken away from food. Myo-inositol powder can go in water at any point in the day. Pick a slot you will remember, since consistency matters more than perfect timing.
How long before I notice anything?
Give it two to three weeks of daily use before you draw a conclusion, and do not expect a sudden change. Nutrients such as chromium and zinc work in the background of normal metabolism, so what people usually report is a steadier day rather than a single moment. Keep the rest of your routine the same during the trial. If nothing changes after a month or two at a sensible dose, that ingredient is probably not the one for you.
Is Ceylon cinnamon better than Cassia?
For daily use, we prefer Ceylon. The difference is coumarin, a natural compound found in cinnamon bark. Cassia cinnamon, the cheaper and more common type, contains much more of it than Ceylon (Cinnamomum verum), and coumarin has a tolerable daily intake. That is why the cinnamon products in our range state the species on the label. Neither type carries an approved blood glucose claim in the EU, so we do not make one.
Can I take a blood sugar supplement alongside prescribed medication?
Ask your GP or pharmacist first, and keep taking your medication as prescribed. Food supplements are not a replacement for treatment and should never be used to adjust a prescription yourself. This matters most with berberine, chromium at higher doses and alpha-lipoic acid, since your prescriber may want to know about them. If you monitor your glucose at home, tell your healthcare team what you have started and when, so any readings can be read in context.
Why is berberine dosed two or three times a day?
Two reasons, both about how the body handles it. Berberine is poorly absorbed, so blood levels rise and fall quickly and a single daily capsule covers only part of the day. It also draws water into the gut at higher single doses, which is why people report wind, cramping or loose stools when they take a large amount at once. Splitting the total across meals is gentler and is how most labels are written. Some products add extra ingredients to support absorption.
