Inositol
Inositol is a naturally occurring sugar-like compound sometimes classified as a B-vitamin (B8) that plays important roles in cell signaling and neurotransmitter function. It is commonly used to support mental health and metabolic processes.
Inositol is a B-vitamin-like supplement used for mental health and metabolic support, particularly for anxiety, depression, and PCOS.
Key facts at a glance
- ATC
- A11HA07
- RxNorm
- 6058
- Generic
- Inositol
- Class
- atc-a11
- Brands
- Pregnitude
- Availability
- otc
- Pregnancy
- A
- Lactation
- safe
- Half-life (h)
- 6
- Onset (min)
- 0
- Duration (h)
- 0
- Routes
- oral
- Forms
- tablet, capsule, powder, softgel
- Regions
- United States, Canada, European Union, United Kingdom, Australia
- Monitoring
- blood glucose
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Inositol is used for mental health support including depression, anxiety, panic disorder, and OCD, as well as metabolic conditions such as polycystic ovary syndrome (PCOS), insulin resistance, and metabolic syndrome. It may also support healthy hair and skin, though evidence varies.
Inositol functions as a secondary messenger in cellular signal transduction, particularly for neurotransmitters like serotonin and norepinephrine. It helps regulate calcium signaling within cells and supports proper insulin action and lipid metabolism.
Inositol is generally well-tolerated with mild side effects including digestive upset at high doses. It may interact with medications affecting serotonin or blood sugar levels. Pregnant or nursing individuals should consult a healthcare provider before use. Natural sources include fruits, beans, and grains.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 26, 2026. · Read our editorial policy