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Dietary supplement

Pure Inositol Powder Ingredients & Drug Interactions

by Source Naturals

Pure Inositol Powder label
See full label image
Powder Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Pure Inositol Powder against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Pure Inositol Powder is a dietary supplement by Source Naturals with 1 active ingredient. Its ingredients are commonly taken for polycystic ovary syndrome (pcos), anxiety and panic, depression and mood.Based on those ingredients, 86 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Inositol. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Pure Inositol Powder by Source Naturals

Ask about any prescription or over-the-counter medication and we check it for interactions with Pure Inositol Powder by Source Naturals — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Pure Inositol Powder by Source Naturals

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Sep 10, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

Pure Inositol Powder contains one active ingredient: inositol, a compound your body naturally makes and gets from food. It plays a role in how your cells respond to insulin and how glucose is processed.

This product is just the powder — there are no inactive ingredients or fillers listed.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: healthy cell membranes and nerve impulse function.
  • We looked for evidence on: Anxiety, Depression, Panic disorder, Bipolar disorder, Obsessive-compulsive disorder (OCD), Post-traumatic stress disorder (PTSD) — and 4 related terms.
  • The strongest evidence on file: Inositol is rated "Possibly Effective" for Polycystic ovary syndrome (PCOS) (Natural Medicines).
  • Also on file: Inositol is rated "Possibly Effective" for Metabolic syndrome.
  • Also on file: Inositol is rated "Possibly Ineffective" for Anxiety, Depression.

The evidence for inositol is mixed. It's rated possibly effective for polycystic ovary syndrome (PCOS), metabolic syndrome, and preterm labor.

However, it's rated possibly ineffective for anxiety, diabetic nerve pain (neuropathy), and depression, meaning the research doesn't support it for those uses. Whether it'll work for you depends on which condition you're looking at — talk with your doctor about what the science shows for your particular situation.

The evidence, ingredient by ingredient Inositol

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Inositol is generally well tolerated at typical doses. The most common side effects are mild and digestive: diarrhea, gas, and nausea.

In studies combining inositol with omega-3s, a small number of children reported cold and allergy symptoms. For pregnancy, the safety data is incomplete — inositol is rated possibly safe, but it's been studied only in limited settings and not fully evaluated.

If you're pregnant or breastfeeding, there isn't enough reliable information to know either way. Talk with your doctor or pharmacist about whether it's appropriate for you before using it.

Side effects, ingredient by ingredient Inositol

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Inositol.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 86 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before you take this product, check with your doctor or pharmacist if you use any antidiabetes drugs — insulin, metformin, sulfonylureas, or any other blood-sugar-lowering medication. Inositol can lower blood glucose on its own, and combining it with diabetes drugs may cause your blood sugar to drop too much.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Inositol may be worth considering if you have PCOS, metabolic syndrome, or are at risk for preterm labor — those are the uses with some evidence behind them. If you take any diabetes medication, you'll need to clear this with your doctor first because of the risk of low blood sugar.

Talk with your own doctor or pharmacist before starting, especially if you're pregnant, breastfeeding, or taking any medications.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Sep 22, 2022.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Pure Inositol Powder, straight from the product label.

Brand Source Naturals
Barcode (UPC) 021078004950
Net contents 8 Oz(s); 226.8 Gram(s)
Market status On market
Date entered into DSLD Sep 22, 2022
DSLD ID 275356
Product type Non-nutrient/non-botanical
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Pure Inositol Powder by Source Naturals, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
0.13 Teaspoon(s)
Maximum serving Sizes:
0.25 Teaspoon(s)
Servings per container
260
UPC/BARCODE
021078004950
IngredientAmount% DV
Inositol845 mg--

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
FDA Statement of Identity

Dietary Supplement

Formula

Inositol is an essential component of the phospholipids that make up cellular membranes found in virtually every cell in the body. Recent research indicates that inositol helps establish healthy cell membranes which facilitate nerve impulses.

Precautions

Do not use if either tamper-evident seal is broken or missing.

Keep out of the reach of children.

Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Suggested/Recommended/Usage/Directions

Suggested Use: 1/8 to 1/4 teaspoon daily, mixed with water or juice between meals or at bedtime.

Storage

Store in a cool, dry place.

Formulation

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, preservatives, or artificial color, flavor or fragrance.

Suitable for vegetarians.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Brand IP Statement(s)

Copyright SOURCE NATURALS, INC.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Pure Inositol Powder by Source Naturals label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Pure Inositol Powder label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Pure Inositol Powder by Source Naturals

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size0.13 Teaspoon(s) Dosage formPowder Servings per container260 Amounts shown are per serving.

Inositol

Interacts with
86 drugs
845 mg per serving

Inositol is a sugar alcohol made naturally in the body and found in many foods, and it is sold as a supplement (often myo-inositol) mainly for PCOS, m...

Inositol monograph & interactions
Interaction report

Pure Inositol Powder by Source Naturals Drug Interactions

Want to check YOUR meds against Pure Inositol Powder?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
86Drugs
86 Moderate

Ingredients driving the most interactions

Inositol 86

Individual Drug Interactions

The ingredients in Pure Inositol Powder interact with 86 drugs. Click any drug to see the details.

1 of the 1 ingredient in Pure Inositol Powder interact with drugs. Each result below shows which ingredient is responsible. Inositol

Each ingredient & the kinds of drugs it affects

For each ingredient in Pure Inositol Powder with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Inositol1 drug type · 86 drugs

Antidiabetes Drugs

Theoretically, taking inositol with antidiabetes drugs might increase the risk of hypoglycemia.
Clinical research shows that inositol lowers blood glucose levels and glycated hemoglobin (HbA1c) levels in patients with diabetes.

Likelihood Possible Evidence A
Inositol full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Pure Inositol Powder, from the product label.

Source Naturals

Name
Source Naturals, Inc.
Street Address
P. O. Box 2118
City
Santa Cruz
State
CA
ZipCode
95062
Web Address
www.sourcenaturals.com
Pharmacist Counseling Corner

Pure Inositol Powder by Source Naturals: Common Questions

Does Pure Inositol Powder by Source Naturals interact with any medications?
Yes. Based on its ingredients, Pure Inositol Powder has a known interaction with 86 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Pure Inositol Powder contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take inositol if I have diabetes?
Inositol does lower blood glucose levels, which is why it's studied for diabetes. But if you already take medication to manage your blood sugar, adding inositol could make your levels drop too far. Check with your doctor before taking it — your diabetes medication might need adjusting, or inositol might not be right for you at all.
What side effects might I experience?
Most common are mild digestive issues: diarrhea, gas, and nausea. These tend to be gentle and go away for many people. In children taking inositol with omega-3s, a small number reported cold or allergy symptoms in studies.
Is inositol safe to use during pregnancy?
Inositol is rated possibly safe in pregnancy, but there isn't enough reliable data to know for sure. It's been used in some pregnancy studies, but safety hasn't been fully established. Talk with your doctor or pharmacist about whether it's right for you if you're pregnant or planning to be.
Does inositol help with PCOS?
Yes — inositol is rated possibly effective for polycystic ovary syndrome (PCOS), which means there's some evidence it may help. However, it's not the same as proven effective, so talk with your doctor about whether it fits your individual plan.
Will this help my anxiety or depression?
The evidence doesn't support inositol for anxiety or depression — it's rated possibly ineffective for both. If you're looking to manage either of those, there are other approaches with stronger evidence. Your doctor can discuss what might actually help.
Is this just inositol, or are there other ingredients?
This is Pure Inositol Powder — just inositol, no fillers or other active ingredients added.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Pure Inositol Powder is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Pure Inositol Powder label
Go deeper

The Full Monographs Behind Pure Inositol Powder’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Inositol

Interacts with 86 drugs

Inositol is a sugar alcohol made naturally in the body and found in many foods, and it is sold as a supplement (often myo-inositol) mainly for PCOS, mood, and metabolic concerns. The stronge...

Read the full Inositol monograph →
Sources

Sources & How We Checked

Pure Inositol Powder's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 14 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Inositol 14 references
  1. Palatnik A, Frolov K, Fux M, Benjamin J. Double-blind, controlled, crossover trial of inositol versus fluvoxamine for the treatment of panic disorder. J Clin Psychopharmacol 2001;21:335-9.. PubMed
  2. Allan SJ, Kavanagh GM, Herd RM, Savin JA. The effect of inositol supplements on the psoriasis of patients taking lithium: a randomized, placebo-controlled trial. Br J Dermatol 2004;150:966-9. PubMed
  3. Machado-Vieira R, Viale CI, Kapczinski F. Mania associated with an energy drink: the possible role of caffeine, taurine, and inositol. Can J Psychiatry 2001;46:454-5. PubMed
  4. Kamenov Z, Kolarov G, Gateva A, Carlomagno G, Genazzani AD. Ovulation induction with myo-inositol alone and in combination with clomiphene citrate in polycystic ovarian syndrome patients with insulin resistance. Gynecol Endocrinol 2015;31(2):131-5. PubMed
  5. Matarrelli B, Vitacolonna E, D'Angelo M, et al. Effect of dietary myo-inositol supplementation in pregnancy on the incidence of maternal gestational diabetes mellitus and fetal outcomes: a randomized controlled trial. J Matern Fetal Neonatal Med 2013;26(1 PubMed
  6. Mukai T, Kishi T, Matsuda Y, Iwata N. A meta-analysis of inositol for depression and anxiety disorders. Hum Psychopharmacol 2014;29(1):55-63. PubMed
  7. Farren M, Daly N, McKeating A, Kinsley B, Turner MJ, Daly S. The Prevention of Gestational Diabetes Mellitus With Antenatal Oral Inositol Supplementation: A Randomized Controlled Trial. Diabetes Care. 2017;40(6):759-63. PubMed
  8. Zheng X, Liu Z, Zhang Y, et al. Relationship Between Myo-Inositol Supplementary and Gestational Diabetes Mellitus: A Meta-Analysis. Medicine (Baltimore). 2015;94(42):e1604. PubMed
  9. Crawford TJ, Crowther CA, Alsweiler J, Brown J. Antenatal dietary supplementation with myo-inositol in women during pregnancy for preventing gestational diabetes. Cochrane Database Syst Rev. 2015;(12):CD011507. PubMed
  10. Maurizi AR, Menduni M, Del Toro R, et al. A pilot study of D-chiro-inositol plus folic acid in overweight patients with type 1 diabetes. Acta Diabetol. 2017;54(4):361-65. PubMed
  11. Leppink EW, Redden SA, Grant JE. A double-blind, placebo-controlled study of inositol in trichotillomania. Int Clin Psychopharmacol. 2017;32(2):107-14. PubMed
  12. Lam S, Mandrekar SJ, Gesthalter Y. A Randomized Phase IIb Trial of myo-Inositol in Smokers with Bronchial Dysplasia. Cancer Prev Res (Phila). 2016;9(12):906-14.
  13. Wozniak J, Faraone SV, Chan J, et al. A randomized clinical trial of high eicosapentaenoic acid omega-3 fatty acids and inositol as monotherapy and in combination in the treatment of pediatric bipolar spectrum disorders: a pilot study. J Clin Psychiatry. PubMed
  14. Vitale SG, Corrado F, Caruso S, et al. Myo-inositol supplementation to prevent gestational diabetes in overweight non-obese women: bioelectrical impedance analysis, metabolic aspects, obstetric and neonatal outcomes - a randomized and open-label, placebo-

See these in context on the Inositol monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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