Inositol is a naturally occurring sugar alcohol once considered part of the B-vitamin family, found in foods like fruits, beans, and grains. Its two most studied forms, myo-inositol and D-chiro-inositol, play important roles in cellular signaling, particularly in pathways involving insulin and certain neurotransmitters like serotonin. Research suggests that inositol may support mood balance and help ease symptoms of anxiety and obsessive-compulsive tendencies, with several studies pointing to its influence on serotonin receptor sensitivity. Studies also indicate promising results for individuals with polycystic ovary syndrome, where inositol supplementation has been associated with improved blood sugar regulation, hormonal balance, and fertility outcomes. While more large-scale research is still needed across many of these areas, the existing evidence paints inositol as a well-tolerated compound with a broad and intriguing range of potential benefits.
Compare this supplementResearch suggests that myo-inositol has generated modest scientific interest as a potential support for OCD, with a 2...
View studies →Research suggests that myo-inositol may support blood sugar regulation, particularly in the context of gestational di...
View studies →Research suggests that myo-inositol may offer benefits for fertility-related outcomes, particularly in women with pol...
View studies →Research suggests that inositol — particularly in its myo-inositol form — plays a measurable role in brain signaling ...
View studies →Research suggests that inositol has a modest but measurable relationship with sleep quality, though the evidence is l...
View studies →Research on inositol for anxiety relief cannot be meaningfully summarized from the single study provided, as that stu...
View studies →Research on inositol for PCOS support is still in early stages based on the available evidence provided here. One stu...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 1–2 g | Daily | Sleep quality and general health support | Lower doses used in general wellness and sleep-related supplementation contexts |
| Powder | 2 g | Daily | Fertility support; often combined with D-chiro-inositol in 40:1 ratio | Myo-inositol combined with D-chiro-inositol studied for ovulatory function (Unfer et al.) |
| Powder | 2–4 g | Daily | Mood support and general anxiety relief | Moderate doses studied in mood and anxiety trials; common in supplementation protocols |
| Powder | 12–18 g | Daily | OCD support and anxiety relief | Higher doses used in clinical trials for OCD and panic disorder (Benjamin et al., Fux et al.) |
| Powder | 2–4 g | Twice daily | PCOS support, fertility, and blood sugar regulation | Commonly used in RCTs for PCOS; myo-inositol 4g/day is a widely replicated dose |