Cell-signaling polyol supplement · Fact sheet
Myo-inositol
Also known as Inositol · MI
Myo-inositol is a cell-signaling polyol studied in psychiatric and reproductive settings. Small older mood and panic trials generated signals, but different inositol forms and combinations do not have interchangeable evidence.
What is Myo-inositol?
Inositol is a family of stereoisomers; this entry concerns myo-inositol.
Scyllo-inositol, D-chiro-inositol and mixtures with those forms should be evaluated separately.
Benefits & claims
Interest in Myo-inositol spans cognition and sleep, hormone and reproductive health, metabolism. Study findings apply to the named formulation and population.
What the evidence supports
- The depression study found a Hamilton-score improvement over placebo after four weeks.
- The panic study reported fewer or less severe attacks, but its small crossover design needs replication.
- A signal in one diagnosis cannot establish treatment of all anxiety, sleep or reproductive problems.
Research areas
- Formulation-specific human outcomes
- Mechanistic research
Dosage & frequency
Human study contextThis is an exposure from a named human study, not a generally established treatment or enhancement regimen.
Inositol depression controlled trial
28 patients with depression; 13 active and 15 placebo
- Amount
- 12 g total daily
- Frequency
- Daily for four weeks
- Route studied or labeled
- Oral
The indexed study gives a daily total rather than a complete division schedule. This older small trial does not establish routine psychiatric treatment or a PCOS regimen.
How to read these amounts
An approved regimen belongs to a specific product, indication, and population. A study regimen describes what researchers tested; it does not establish a prescription or a safe self-use protocol. Products, routes, and formulations are not interchangeable. A prescriber uses the full label and individual clinical circumstances.
Personal accounts may describe amounts, schedules and outcomes beyond clinical research. They do not establish a regimen. Read the reported experiences
Formulations, interactions & practical context
- Identity and pharmacology
- Inositol is a family of stereoisomers; this entry concerns myo-inositol.
Formulation differences
- Scyllo-inositol, D-chiro-inositol and mixtures with those forms should be evaluated separately.
Interactions & precautions
- The reviewed sources do not establish a comprehensive human interaction profile for this exact substance or combination.
What is still unresolved
- Reproducibility in larger independent trials
- Long-term outcomes and adverse effects
- Equivalence of different preparations and interaction profiles
Side effects & risks
- Small studies with limited follow-up cannot establish uncommon psychiatric or metabolic harms.
- Concentrated gram-level exposure and combination products need formulation-specific gastrointestinal and interaction assessment.
This is a summary of the cited evidence, not a complete product label. A lack of human safety data does not establish safety.
Clinical research
Early human evidenceAn early 28-person depression trial and a 21-completer panic crossover study were small. These do not establish a general psychiatric regimen or disease-independent supplement benefit.
Studies
28-person four-week depression trial.
21-completer panic crossover trial.
Personal experiences
Reports describe what someone noticed. They cannot establish cause, typical results, or how often a side effect happens. Amounts and schedules describe the individual account, not an effective or safe dose. Product identity and strength may be unverified, and missing details are left explicit.
No attributable personal accounts were found in the sources reviewed.
Approval status
No FDA-approved Myo-inositol drug indication is established for the supplement uses discussed here. Supplement availability is not FDA approval of efficacy or safety.
No FDA-approved product for this entry
Approval covers the labeled product, use and population. A trial phase does not establish success; a stopped program is not ongoing research.
Open questions
- Reproducibility in larger independent trials
- Long-term outcomes and adverse effects
- Equivalence of different preparations and interaction profiles
Summary
A signal in one diagnosis cannot establish treatment of all anxiety, sleep or reproductive problems.
Sources
Medical evidence and regulatory sources are listed here. Personal reports are linked separately in the experiences section.
- pubmedDouble-blind, controlled trial of inositol treatment of depression.
28-person four-week depression trial.
- pubmedDouble-blind, placebo-controlled, crossover trial of inositol treatment for panic disorder.
21-completer panic crossover trial.
- fdaFDA: what approval means for supplements
Dietary supplements are not approved by FDA for safety and effectiveness before marketing.