About L-Arabinose
L-arabinose is a five-carbon sugar derived from plant cell walls (sugar beet pulp, acacia gum) that selectively inhibits intestinal sucrase, blocking breakdown of sucrose into glucose and fructose. FDA GRAS status. Small RCTs (n=12–23) show 11–15% reduction in postprandial glucose peaks and 30–52% reduction in insulin peaks when co-ingested with sucrose in liquid form. However, a key study found NO effect when added to mixed solid meals — a critical limitation for real-world use. No long-term RCTs for weight loss, HbA1c, or metabolic endpoints. Sukre is a branded form by Compound Solutions.
What L-Arabinose supports
- May blunt post-meal glucose and insulin spikes when taken with sucrose
- Prebiotic effect — undigested sucrose is fermented by gut bacteria
How much L-Arabinose to take
The RDA prevents deficiency. The effective range is what clinical trials used to actually move the outcome.
Effective
2000–7500
mg
Clinical studies use 2–7.5 g per dose taken with sucrose-containing food/drink. Effective only for sucrose (inhibits sucrase); does not block glucose from starch. Effect demonstrated in liquid sucrose challenges but NOT in mixed solid meals.
Clinical evidence
Limited clinical evidence. A few small trials (12-23 participants) show glucose reduction with sucrose only; fails in mixed meals