The evidence
A randomized, placebo-controlled trial of 60 adults aged 40 to 76. The method, the numbers, and the four people it did nothing for.
In April 2026 we ran a randomized, placebo-controlled trial of IgniREM Sleep in 60 adults aged 40 to 76. Over fourteen nights, the group taking the supplement increased its share of REM sleep by an average of 24.6%. This page is the whole study: the method, the numbers, the four people it did nothing for, and what it did not measure.
REM sleep, as a percentage of total sleep time, averaged across each group.
| Group | Nights 1–7 (baseline) | Nights 8–21 | Within-group p |
|---|---|---|---|
| IgniREM Sleep (n=30) | 21.09% ± 0.99 | 26.28% ± 1.28 | <0.001 |
| Placebo (n=30) | 20.33% ± 1.20 | 18.45% ± 1.15 | <0.01 |
| Between groups | p = 0.22 | p < 0.001 | — |
The two groups were statistically indistinguishable at baseline (p = 0.22), which matters: it means the difference at the end came from the fourteen nights in between and not from a head start.
The supplement group went from 21.09% to 26.28% — a relative increase of 24.6%. Twenty-six of the thirty participants improved. Four did not change at all.
The age range is the reason we ran this study rather than citing someone else's. Most supplement research recruits students. The people who buy this are in their fifties and sixties, and sleep architecture at 56 is not sleep architecture at 22.
Everyone received the same instructions on the tracker, the app and how to take the capsules, from trained staff.
This is the section most supplement studies leave out, so it is worth being direct. The trial analysed one outcome: REM as a share of total sleep. It did not analyse any of the following.
If you see a claim from us about any of the above, it is not coming from this trial, and you should ask where it is coming from.
Participants did not know which capsule they had. The people running the study did. Double-blinding removes a source of bias that single-blinding leaves in, and this trial left it in.
The gold standard for sleep staging is polysomnography, which records brain activity directly. A ring infers stages from heart rate and movement. Consumer wearables agree well with lab measurement on whether you are asleep, and less well on which stage you are in — REM included.
We used one anyway, deliberately. A lab study produces a number you have to take on faith. A tracker study produces a number you can go and reproduce this month with the device on your own hand. For a brand asking you to check its claims, that trade was worth making. But it means the absolute percentages carry more uncertainty than a lab figure would, and the honest way to read this study is as a comparison between two groups measured the same way, not as a precise measurement of REM.
This is a completed internal study. It has not been submitted to a journal, and no independent reviewer has been through the method. We would rather say that than let the word "study" do work it has not earned.
Placebo REM fell from 20.33% to 18.45%, a 9.2% decrease, driven mostly by eight of the thirty participants. We do not have an explanation. It could be seasonal, it could be drift in the devices, it could be regression toward a mean after a week of novelty. Because we cannot account for it, the figure we quote is the supplement group's own before-and-after, not the gap between the two groups at the end — which would look considerably more impressive and would be leaning on a number we cannot explain.
Their REM share did not move. We do not know why, we did not find a pattern in age or sex that explained it, and we are not going to invent one. It works out to roughly a one-in-seven chance that this does nothing measurable for you.
The protocol is simple enough to repeat, and if you already own a tracker it costs you nothing extra.
A single night tells you nothing. Sleep varies enormously from night to night for reasons that have nothing to do with what you took — alcohol, a late meal, room temperature, stress, illness. That is exactly why the trial used a seven-night baseline instead of one night. Average across weeks, not days.
These are the papers referenced in the study report. They are background on REM sleep itself, not evidence for this product.
Report dated 4 April 2026. Figures are group averages; individual results vary. Four of thirty participants in the supplement group saw no change.
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. Nothing on this page is medical advice. Talk to a doctor or pharmacist about your own situation, particularly if you take prescription medication.