Unfer et al. (2017)
Endocrine Connections
Participants
1,709 women with PCOS, meta-analysis
Dosage
2000–4000 mg daily, 3–6 months
Result: Significant improvement in ovulation, reduction in testosterone and insulin resistance.
For cycle and sugar cravings
Myo-Inositol
Myo-Inositol · A vitamin-like compound from the inositol group
Studied in dozens of clinical trials in women — mostly for the cycle and insulin sensitivity. 2000 mg per sachet, the dose from the studies.
2000 mgin 1 Corti-Glow sachet
Certificate (COA)
Helps with
Sugar cravings around 3–4 PMIrregular menstrual cycleBloating before periodHormonal imbalance (PCOS, polycystic ovary syndrome)Insulin resistance
In plain language
What it does in your body
Myo-Inositol is a type of sugar (polyol), but it is not metabolized like ordinary glucose.
It participates in transmitting the insulin signal inside the cell, simply put, it helps cells “hear” insulin.
The body produces about 2 grams per day, but in women with PCOS (polycystic ovary syndrome), high stress or sugar imbalance, this production is not enough.
Inside cells, myo-inositol and D-chiro-inositol (DCI) exist in a natural 40:1 ratio. In PCOS this ratio is disrupted, which is why quality supplements deliver pure myo-inositol rather than standalone D-chiro. Nordio 2019 confirmed the 40:1 ratio restores ovulation in 70% of women within 3 cycles.
Natural source:
Produced naturally by the body and found in whole grains, beans, lentils, citrus fruits and nuts. Industrial myo-inositol is extracted from corn germ via a water-based process.
Why myo-inositol is in Corti-Glow
Why this ingredient specifically, not an alternative.
1 in 10 women of reproductive age has polycystic ovary syndrome (PCOS), a leading cause of irregular cycles and fertility difficulties.
The most-researched ingredient for women with premenstrual syndrome (PMS) and PCOS, a hormonal condition with an irregular cycle and unstable insulin.
Across 40+ clinical trials in women, better insulin sensitivity, fewer afternoon sugar cravings and more regular ovulation are observed.
When insulin is stable, testosterone and estrogen stop spiking, the cycle becomes more predictable.
How it works on the body
Mechanism, step by step.
1Activates the insulin receptor
Myo-Inositol is a second messenger for insulin. Without it, the cell doesn't understand that insulin is “knocking on the door”.
2Regulates blood sugar levels
Better glucose uptake into cells = fewer sugar spikes and crashes = fewer cravings for quick energy (sweets, bread).
3Supports ovarian function
Helps follicles mature properly. In PCOS (polycystic ovary syndrome) it reduces androgen-driven symptoms, excess hair growth, acne, disrupted cycle.
4Reduces anxiety (indirectly)
Stable blood sugar = stable mood. Hypoglycemia (low blood sugar) is often experienced as “anxiety”.
What to expect
Realistic timeframes, not promises.
First week · Myo-Inositol
A slight reduction in sugar cravings after 3 PM. Afternoon energy dips become milder.
First week
A slight reduction in sugar cravings after 3 PM. Afternoon energy dips become milder.
2–3 weeks
More stable mood. Fewer “zombie” hours between meals.
1 cycle
PMS symptoms are milder. Bloating before your period decreases.
2–3 cycles
The cycle becomes more regular. In women with PCOS (polycystic ovary syndrome), ovulation and hormonal markers normalize.
How it works with the other ingredients
7 ingredients. Each pair with a specific mechanism.
Not random supplements in one box. Every combination has a biological reason.
Combination
Myo-Inositol + Magnesium
+ Magnesium Bisglycinate · 670 mg
For sleep and muscle relaxation
Mechanism
Before your cycle, insulin sensitivity drops and blood sugar becomes unstable in the evening. The sachet carries 2000 mg myo-inositol together with magnesium, which contributes to normal energy metabolism and to the reduction of tiredness and fatigue (authorized claims, EFSA).
End benefit
More stable blood sugar in the days before your cycle, when insulin resistance usually worsens.
3 combinations · click to explore
This is why they aren't sold separately, one sachet, the full chain.
The research
Don't take our word for it, see what the science says.
PubMed
Nordio et al. (2019)
European Review for Medical and Pharmacological Sciences
Participants
40 women with PCOS
Dosage
2000 mg myo-inositol + 50 mg D-chiro-inositol (40:1), 3 cycles
Result: 70% restored ovulation. Confirmed the 40:1 ratio is more effective than standalone DCI.
+70%
Pundir et al. (Cochrane) (2018)
Cochrane Database of Systematic Reviews
Participants
Systematic review of 9 RCTs, 247 women with PCOS
Dosage
2000–4000 mg daily
Result: Myo-inositol improves ovulation and reduces androgens in PCOS. Moderate-certainty evidence.
Costantino et al. (2009)
European Review for Medical and Pharmacological Sciences
Participants
42 women with PCOS
Dosage
4000 mg daily, 12–16 weeks
Result: 69% of women restored ovulation. Reduction in insulin and testosterone.
+69%
Genazzani et al. (2008)
Gynecological Endocrinology
Participants
20 women with hyperandrogenism
Dosage
2000 mg daily, 12 weeks
Result: Reduction in LH, testosterone and insulin. Improvement of the menstrual cycle.
Why this exact dose in Corti-Glow
2000 mg, specific, not random.
- →2000 mg is the lower bound of the clinically effective dose for women with PCOS (most studies use 2000–4000 mg).
- →For women without a diagnosed PCOS but with PMS symptoms and sugar cravings, 2000 mg is an adequate daily dose.
- →In a sachet that dissolves in water: better absorption than a capsule.
- →The effect is cumulative, daily 2000 mg works better than episodic higher doses.
Dose comparison
in mgSee how our dose compares with what was used in clinical trials.
Corti-Glow, our dose
our dose, 2000 mg
2000 mg
Unfer 2017
2000–4000 mg daily, 3–6 months
2000 mg
Nordio 2019
2000 mg myo-inositol + 50 mg D-chiro-inositol (40:1), 3 cycles
2000 mg
Pundir 2018
2000–4000 mg daily
2000 mg
Corti-GlowClinical study
Frequently asked questions
About myo-inositol.
What is the 40:1 myo-to-D-chiro inositol ratio?+
In healthy cells, myo-inositol and D-chiro-inositol exist in a natural 40:1 ratio. In PCOS this ratio is disrupted, ovaries carry more D-chiro than they should. Nordio 2019 showed that supplements mimicking the 40:1 ratio restored ovulation in 70% of women over 3 cycles. Standalone D-chiro in large doses actually worsens ovarian function.
Is Myo-Inositol only for women?+
No, but most research is in women, because its effects on PCOS, PMS and cycle regulation are best documented. Men also use it for insulin sensitivity and metabolic syndrome.
How long does it take to see results?+
For sugar cravings, 1–2 weeks. For PMS symptoms, 1 cycle. For PCOS and cycle regulation, 2–3 cycles of daily intake. The effect is cumulative, not episodic.
Will it help if I don't have a PCOS diagnosis?+
Myo-Inositol is among the most-studied ingredients for afternoon sugar cravings and the days before your cycle, across 40+ clinical trials in women (see the studies above). If you notice an irregular cycle for 3+ months in a row, see a gynecologist for a diagnosis.
Can it be combined with metformin?+
Myo-Inositol works through the same mechanism as metformin (improving insulin sensitivity), but is gentler and has no GI side effects. Two RCTs showed comparable efficacy in PCOS. If you take metformin, consult your doctor before combining.
Can I combine it with hormonal birth control?+
Yes. Myo-Inositol does not affect the hormonal mechanism of oral contraceptives. Some women use it to reduce PMS symptoms during the placebo-pill days (when hormones drop).
Is it safe during pregnancy?+
The Corti-Glow formula is not tested for pregnancy. If you are pregnant or breastfeeding, consult your doctor before starting.
Is 2000 mg enough for PCOS?+
2000 mg is the lower bound of the clinically effective dose. Most PCOS trials use 2000–4000 mg per day, split into 2 doses. In severe PCOS your doctor may recommend a higher dose, but 2000 mg in Corti-Glow is sufficient for moderate symptoms and PMS maintenance.
Myo-Inositol vs generic inositol, what's the difference?+
„Inositol" is an umbrella term, covers 9 isomers. Myo-inositol is the most effective for PCOS and PMS (95% of inositol in the body). D-chiro-inositol works only in small amounts (40:1). If a label says just „inositol" without a specifier, it's most likely myo-inositol.
Are there side effects?+
Myo-Inositol is one of the safest supplements studied. In trials using 4000 mg daily for 6+ months, side effects are under 5%, mostly mild nausea or diarrhea in the first week, which pass. Sachets in water absorb more gently than capsules.
Works well with
The other ingredients in Corti-Glow.
For sleep and muscle relaxation
Magnesium Bisglycinate
670 mgMagnesium contributes to normal nervous system and muscle function. The bisglycinate form is chosen as gentler on the stomach than the oxide.
See detailsFor the nervous system and mood
Vitamin B6
1.4 mgVitamin B6 (pyridoxine hydrochloride) — 100% of the recommended daily intake in one sachet.
See detailsThis information is general and does not replace medical consultation. If you have a diagnosed condition, are pregnant, or are planning pregnancy, consult your doctor before supplements.