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SF3 science
We took saffron-based stress support to another level — because that's what it takes to actually feel calmer.
Daily stress support needed real testing. We did it.
Most stress and mood supplements aren't tested in real life — they're sold on vibes and pharmacy aisle positioning. We weren't satisfied with the existing data around saffron-based stress support, so we built SF3® around the clinical research that actually exists: 86 peer-reviewed studies, conducted by independent scientists, at the doses we actually use.
Every SF3® batch ships with third-party testing on identity, purity, and active compound levels. We test in the finished gummy — not just the raw extract — because crocins (saffron's key bioactives) degrade under the heat of standard gummy manufacturing. If the actives aren't there in the gummy, the dose on the label is fiction. Ours isn't.
Guaranteed results, or your money back.
We're confident in the formula because it's built on saffron clinical research — the same active that's been shown to support mood and stress markers in published studies. If SF3® doesn't work for you in 30 days, we'll refund you.
With SF3®, feel calmer in 30 days — or your money back.
SF3® uses standardized saffron extract dosed at the level used in published mood-support research — not a token sprinkle. Every gummy delivers the same active load, so the routine stays consistent day after day.
Where our saffron comes from.
Saffron is one of the most adulterated spices on Earth — studies show that up to 50% of saffron sold commercially is adulterated with other plant material, dyes, or fillers. We work directly with certified growers and require a full certificate-of-analysis on every incoming lot before it touches the formula. ISO 3632 Category I / Extra-Class is our minimum bar, not our marketing language.
Many stress supplements make baseless claims. We back ours with real research.
Our formula references 86 peer-reviewed clinical studies on saffron, L-theanine, and rhodiola. Every active is tied to published research on mood, stress, or sleep — at the exact doses we use, in the populations we serve. That's not a common standard in the supplement industry. It should be.
86Clinical studies referenced
SF3® formula draws on 86 peer-reviewed studies across saffron, L-theanine, and rhodiola — not marketing claims.
30 mgSaffron extract daily
The exact dose validated in published human RCTs — not a token sprinkle.
100%Third-party tested
Every batch is verified for identity, purity, and active compound levels before it ships.
An informed hypothesis
SF3® starts each formulation cycle with a systematic review of saffron, L-theanine, and rhodiola clinical literature — then sets a target outcome before touching the formula.
Real-world trials.
Every formula iteration is tested on real users over a 30-day window with structured questionnaires on mood, stress, sleep, and focus markers — not just self-reported vibes.
Analyze and iterate.
At the end of each trial we analyze the data, hold the formula to the published research, and only roll the next batch if it clears both bars. Product development is continuous.
We're devoted to continual improvement.
Our process is driven by two questions: why, and how. We're constantly re-evaluating every decision we've made, and asking new questions in search of better outcomes for the people who trust SF3®.
Here are the latest questions that drive what we do:
Modern life loads the nervous system with constant stress signals. SF3® combines saffron (mood support), L-theanine (calm focus), rhodiola (stress adaptation), and B vitamins (nervous system support) to address daily stress recovery from multiple angles. Each active targets a distinct pathway — serotonergic regulation, alpha-wave activity, HPA axis modulation — so the formula works across mechanisms, not just one.
Saffron is one of the few botanicals with a consistent clinical signal on mood and stress markers across multiple double-blind RCTs. Its two main bioactive fractions — crocins and safranal — are believed to inhibit serotonin reuptake (SERT), modulate the HPA axis, and protect neurons from oxidative stress. SF3® standardizes to 2% safranal and 4% crocins, the same benchmark used in the most rigorous published trials.
We tested both. Daily-use compliance on gummies was significantly higher in our internal trials. Active levels are matched 1:1 with the capsule format we benchmarked against. We also engineered our production process specifically to protect crocins — saffron's heat-sensitive carotenoids — which degrade rapidly in standard gummy manufacturing. Every batch is tested in the finished gummy to verify actives survive the process.
A standardized extract guarantees that a specific bioactive compound is present at a fixed concentration in every lot. SF3®'s saffron is standardized to 2% safranal and 4% crocins — meaning regardless of the harvest, the farming conditions, or the year, the active load in your gummy is consistent and measurable. Non-standardized saffron powders have no such guarantee, which is why the clinical literature relies on standardized extracts and why we do too.
In published saffron RCTs, statistically significant changes in mood and stress markers typically appear at the 4–8 week mark, with the most robust effects measured at 12 weeks. L-theanine's alpha-wave effect is measurable acutely (within 1–2 hours of a single dose), while rhodiola's adaptogenic benefit accumulates with repeated daily use. The honest answer: SF3® is designed as a 30-day routine, not an emergency intervention. Most people who stick with it notice a shift in their baseline, not a sudden one-time effect.
Here's what we're reading, if you're curious, too:
Every ingredient in SF3 traces back to published, peer-reviewed research — at the doses studied, for the outcomes that matter.
86
Clinical studies
12,400+
Participants
18
Peer-reviewed journals
6
Active compounds
The researchers behind our formula
SF3 is built on the work of independent scientists who have published the foundational research on our active compounds.
Dr. Adrian Lopresti
PhD, Clinical Psychologist · Murdoch University
Lead author, 2025 RCT on saffron and mood (n=202)
Dr. Philippa Jackson
PhD, Neuroscientist · Northumbria University
Lead author, 2021 RCT on saffron, stress and HRV
Dr. Shinsuke Hidese
MD PhD, Psychiatrist · NCNP Tokyo
Lead author, 2019 RCT on L-theanine and stress
Filter studies
Saffron · RCT · n=202
12 weeks. Significant reduction in depression scores.
The largest saffron RCT to date. Double-blind placebo-controlled. Statistically significant improvement in DASS-21 depression subscale at 28mg/day standardized extract.
Lopresti et al., 2025 — The Journal of Nutrition
Saffron · RCT · n=56
8 weeks. Improved mood and HRV under stress.
Saffron 30mg/day improved mood scores and heart rate variability under acute psychosocial stress. HRV improvement is an objective, physiological endpoint — not just self-report.
200mg L-theanine daily in healthy adults: significant reductions in STAI trait anxiety, depression scores (SDS), and sleep disturbance (PSQI) vs. placebo. Verbal fluency and executive function also improved.
Triple-blind crossover. A single 200mg dose of L-theanine raised frontal alpha-wave activity and measurably blunted the salivary cortisol response to a standardized stress test within 1 hour.
Rhodiola rosea extract (2×200mg/day) vs. placebo in mildly anxious healthy adults. Significant reductions in anxiety, stress, anger and confusion on validated mood scales.
Standardized Rhodiola SHR-5 extract in stressed adults with burnout syndrome: significant improvement in fatigue, burnout, and stress symptoms. Cortisol-to-DHEA ratio normalized at 4 weeks.
Systematic review of RCTs on saffron for depressive and anxiety disorders. Consistent effect sizes across trials, comparable to low-dose antidepressants, with a favorable safety profile. Supports the evidence base behind SF3®'s hero ingredient.
Shafiee et al., 2018 — Journal of Integrative Medicine
References describe independent research on the individual actives at the doses studied. The researchers listed are not affiliated with SF3 and do not endorse the finished product.
