The Research Library
Updated August 2026. This page lists the human research that informed the Still You formula, one study at a time: what was tested, at what dose, what was found, and what it does not prove. The studies tested the ingredients at their own doses, not the finished Still You gummy, and we will not pretend otherwise. The printed label is always the final word on what Still You contains.
Every link on this page opens the study’s own record in the National Library of Medicine, the United States government’s medical research archive. You do not have to take our word for any of it.
Hormonal Balance Blend · 500 mg, every dose printed
Soy isoflavones
The study: One big review published in the medical journal Menopause in 2012. It pooled 19 separate clinical trials, covering a median intake of 54 mg a day of isoflavones, over 6 weeks to 12 months.
What it found: Hot flashes came 20.6% less often than with placebo, and were 26.2% milder.
What it does not prove: Still You carries 200 mg of soy isoflavones extract. Extract weight is not the same as measured isoflavone content, so we cite this as the reason soy earned its place, not as a promise of the same numbers.
Read the 19-trial review in the National Library of Medicine →
Red clover
The study: A 2026 review that pooled 9 placebo-controlled clinical trials and graded the strength of the evidence, using 37 to 160 mg a day of red clover isoflavones over 12 weeks to 12 months.
What it found: A statistically significant small-to-moderate reduction in hot-flash frequency versus placebo.
Also worth reading: An earlier double-blind clinical trial in 30 postmenopausal women with more than 5 flushes a day used 80 mg a day of red clover isoflavones for 12 weeks and reported a further 44% reduction in hot flushes in the active group.
What it does not prove: Still You carries 100 mg of red clover extract, not 100 mg of measured isoflavones.
Read the 2026 review in the National Library of Medicine →
Read the earlier clinical trial →
Black cohosh
The study: A 2023 review published in the medical journal Menopause, covering 22 studies and 2,310 women, across different black cohosh preparations.
What it found: Significant improvement in overall menopausal symptoms and hot flashes versus placebo. It was not significant for anxiety or depressive symptoms.
Also worth reading: A placebo-controlled clinical trial of 304 women used a specific extract for 12 weeks and found benefit on the main menopause rating outcome, with the hot-flush score especially responsive.
The honest part: A 2012 review by Cochrane, medicine’s strictest independent evidence checkers, looked at 16 trials and 2,027 women and found no significant pooled effect. The evidence on black cohosh is mixed across preparations. That is exactly why we built a multi-botanical core instead of betting everything on one plant, and why we identity-test our black cohosh every batch.
Read the 2,310-women analysis in the National Library of Medicine →
Read the 304-women clinical trial →
Read the Cochrane review →
Relaxation & Rest Blend · 500 mg
The label shows this blend total, not each amount inside it, and we say that plainly. These studies explain why each ingredient earned its place in the system.
L-Theanine
The study: A placebo-controlled, double-blind clinical trial in 30 adults, 200 mg a day for four weeks. Every person tried both the real thing and the placebo, without knowing which was which.
What it found: Improvement in several stress-related measures and in sleep-quality scores, including falling asleep and sleep disturbance.
Read the four-week trial in the National Library of Medicine →
Saffron
The study: A 2026 double-blind clinical trial in 86 women aged 50 to 70 with low mood and poor sleep, using 28 mg a day of a specific saffron extract for 12 weeks.
What it found: Improvement in depressive symptoms and sleep-related impairment versus placebo. The sleep-disturbance endpoint itself did not separate from placebo, and we tell you that too.
What it does not prove: The trial used a specific branded extract at 28 mg. Our label shows saffron inside the blend total.
Read the 12-week trial in the National Library of Medicine →
Ashwagandha
The study: A gold-standard clinical trial in 100 women with menopausal symptoms: half got 300 mg of a specific root extract twice daily for eight weeks, half got a placebo, and nobody was told which.
What it found: Significant improvement versus placebo in total menopause-rating and quality-of-life scores.
What it does not prove: The studied dose was 600 mg a day of a specific extract. Our label shows ashwagandha inside the blend total.
Read the 100-women trial in the National Library of Medicine →
Botanical Blend · 500 mg
Sphaeranthus + mangosteen
The studies: Two placebo-controlled, double-blind clinical trials of a specific two-extract Sphaeranthus indicus and Garcinia mangostana preparation, 400 mg twice daily, alongside a calorie-aware diet and daily walking. One ran 16 weeks in 60 overweight adults, the other 8 weeks in 60 adults.
What they found: Greater reductions in weight, BMI, and waist measurements than placebo, in both trials, in people who were also dieting and walking.
What they do not prove: Those trials tested a specific two-extract preparation at 800 mg a day. Our Botanical Blend is its own five-ingredient, 500 mg mix. We cite this research as the rationale for the ingredient pair, not as proof for our blend, and Still You makes no weight-loss promises.
Read the 16-week trial in the National Library of Medicine →
Read the 8-week trial →
Digestive Support Probiotics · 20 Billion CFU
Our label names the four probiotic organisms and the 20 Billion CFU count per gummy, but not a separate count for each one. We do not borrow strain-specific trial results from other products. What we claim stays at the level the label supports, and the count is printed on the label.
How we hold ourselves to this
The Federal Trade Commission, the U.S. agency that polices advertising, says health claims should be truthful, not misleading, and supported by competent and reliable scientific evidence, judged by the message a customer actually takes away. We wrote this page to that standard: studies are evidence for why ingredients earned their place, and the Supplement Facts panel is the record of what Still You actually contains.
Read the FTC’s Health Products Compliance Guidance →
*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. Talk with your doctor before you take this, above all if you are pregnant or nursing, have a hormone-sensitive, thyroid, or liver condition, or take any medicine. It contains soy.