Ingredient Spotlight — EnXtra® (Alpinia galanga)

The Mistake You Make at Hour Five

You don't lose focus all at once. You lose it in small, expensive increments — the missed detail, the wrong number, the reply you'd take back. A human trial measured exactly when accuracy starts to slip, and what holds it steady.

The dangerous errors aren't the ones you make when you're tired and know it. They're the ones at hour five, when you still feel sharp but your accuracy has quietly degraded — the email sent to the wrong person, the figure transposed, the clause you skimmed. Attention doesn't announce its own decline. Which is why measuring it, rather than trusting how you feel, is the only honest way to know.

The trial

Researchers ran a randomized, double-dummy, double-blind, placebo-controlled crossover study in 59 caffeine-habituated healthy adults, comparing EnXtra® — a standardized Alpinia galanga extract, dosed at 300 mg — against caffeine, placebo, and a combination. Using the validated Attention Network Test, they tracked not just speed but accuracy — error rate — at 1, 3, and 5 hours after dosing.

What they found

• Fewer errors, and they stayed fewer. With EnXtra®, error rate dropped from baseline and remained low across all three checkpoints — 1, 3, and 5 hours.
• Caffeine's accuracy faded. Caffeine reduced errors early, then error rate climbed back up by the 5-hour mark as its effect wore off — the accuracy side of the familiar crash.
• Focus without a trade-off. The accuracy gains came without a speed-versus-accuracy compromise — the earlier analysis of the same trial had shown alertness held across the full five hours.

The authors concluded that EnXtra® "selectively enhanced focused attention to a higher extent in comparison with caffeine and placebo" — sustained accuracy on demanding tasks, not just a stimulant jolt.

Speed gets the attention. Accuracy pays the bills. This one is about accuracy that lasts.

Why 300 mg, and why this active

We formulate Alpinia galanga at the studied 300 mg — the amount that carried these results — because focus that fades by mid-afternoon isn't focus you can build a workday on. An ingredient that keeps error rate low through hour five is doing the specific job an executive actually needs: staying precise when the day stops being forgiving.

A note on the evidence: this was a supplemental accuracy analysis of the trial, and some between-group differences did not reach statistical significance; the authors emphasize the clinical relevance of the sustained reduction in error rate. We'd rather tell you that than round it away.

Reference: Srivastava S. Selective enhancement of focused attention by Alpinia galanga in subjects with moderate caffeine consumption. Open Access Journal of Clinical Trials. 2018;10:43–49. doi:10.2147/OAJCT.S164450.
Read it: doi.org/10.2147/OAJCT.S164450

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.