Buyer guide ·
Reb A vs Reb M: choosing the right stevia for your product
Reb A is the cost-effective standard; Reb M tastes more like sugar. How the two steviol glycosides differ in taste, cost and use — and how to choose.
If you are reducing sugar with stevia, the first decision is which steviol glycoside to use. The two you will meet most often are rebaudioside A (Reb A) and rebaudioside M (Reb M). Both are purified from the stevia plant, both are intensely sweet, and both are stable in heat and acid. Where they differ is taste, cost and how far they let you go.
The short answer
- Choose Reb A when cost per serve matters most, when stevia is one part of a sweetener blend, or when you are making a moderate sugar reduction.
- Choose Reb M when taste is the priority and stevia carries most or all of the sweetness — zero-sugar drinks are the classic case.
- Consider a blend of the two to balance taste and cost.
Taste
Reb A delivers a clean sweetness at moderate levels, but as the dose rises it can show a slower onset, a lingering finish and some bitterness. Reb M has a faster onset, less linger and much less bitterness, so it tastes closer to sugar at equivalent sweetness. In practice this means Reb M lets you reach a higher sugar-replacement level before off-notes appear, often with less flavour masking.
Sweetness and dose
Both are in the same broad range — roughly 200 to 350 times sweeter than sugar, depending on concentration and the product matrix. Sweetness from high-intensity sweeteners does not scale linearly with dose, so always set levels by bench trial and sensory testing rather than by multiplying from a sugar weight.
Cost
Reb A is produced at very large scale and is the lower-cost option per kilogram. Reb M is a minor glycoside in the leaf and is made either from specially bred high-Reb M leaf or by converting other glycosides, so it costs more per kilogram. Compare cost per serve rather than cost per kilogram: if Reb M lets you drop a masking flavour or a second sweetener, the gap narrows.
Production method
Reb A for food use is extracted and purified from the leaf. Reb M may be leaf-extracted or produced by bioconversion. If your brand, customer or export market specifies one route, say so when you request a quote — the production method is stated in the documentation for each lot.
Regulation in Australia
Steviol glycosides (INS 960) are a permitted intense sweetener in the Australia New Zealand Food Standards Code. Your regulatory adviser should confirm the specification and labelling for your product; ask us for the specification sheet and supporting statements.
How to run a quick comparison
- Make your base without sweetener.
- Prepare samples sweetened with Reb A and with Reb M at levels that match a target sugar sweetness.
- Taste at the temperature the product is consumed, and again after the shelf-life conditions you expect.
- Try a blend (for example two parts Reb A to one part Reb M) if neither alone hits the target.
Suvita supplies both grades with batch certificates of analysis. Request samples of each and compare them in your own product.
Quick answers
Is Reb M natural?
Reb M occurs naturally in the stevia leaf. Commercially it is made by purification from high-Reb M leaf or by bioconversion of other steviol glycosides; the method is stated for each lot.
Can I replace Reb A with Reb M one-for-one?
Not exactly. Their sweetness and time profiles differ, so re-set the dose by bench trial when switching.
Published by Suvita. General information only — confirm formulation and regulatory decisions with your own advisers.
