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Theralogix vs Wholesome Story Inositol (2026)
Disclosure: We earn commissions on purchases made through our links. This never influences our scores. Editorial policy
The Verdict
Theralogix takes it on our rubric, 92 to 88 on our 0-100 execution score, and holds our Top Pick badge; Wholesome Story holds our Best Value badge. Dosing and form ties at a full 25 for both, because the actives are identical. The gap is purity verification, 25 to 19, plus a point of transparency, 23 to 22; Wholesome Story wins value 22 to 19. In our view the whole decision is whether an NSF Certified for Sport mark is worth about twenty-nine cents a day to you. If you are a drug-tested athlete it is not a judgment call at all, since NSF Certified for Sport is the mark that clears that bar and Clean Label Project certification does not.
If you are not, Wholesome Story delivers the same 40:1 amounts with third-party testing at roughly two thirds of the daily cost, and our own notes call it the value pick when NSF certification is not a priority. One caution our profile raises about the ingredient rather than either product: it says to skip inositol if you are bipolar, citing case reports of mania at 12 to 18g doses, and to watch interactions with lithium and insulin. Take that to your clinician before starting either.
Ovasitol Inositol Powder, 90-Day Supply (Canister)
Theralogix
Myo-Inositol & D-Chiro Inositol Powder (40:1)
Wholesome Story
Head-to-Head Comparison
| Category | Ovasitol Inositol Powder, 90-Day Supply (Canister) Theralogix | Myo-Inositol & D-Chiro Inositol Powder (40:1) Wholesome Story |
|---|---|---|
| Brand Score | 92/100Winner | 88/100 |
| Dosing & Form | 25/25Winner | 25/25 |
| Purity | 25/25Winner | 19/25 |
| Value | 19/25 | 22/25Winner |
| Transparency | 23/25Winner | 22/25 |
| Cost/Day | $0.96 | $0.67Winner |
| Dose/Serving | 2050mg | 2050mg |
| Form | Myo-Inositol + D-Chiro-Inositol (40:1) Powder | Myo-Inositol + D-Chiro-Inositol (40:1) Powder |
| Third-Party Tested | ✓ Yes | ✓ Yes |
| Proprietary Blend | No | No |
Why This Comparison Matters
These two deliver the same actives in the same ratio: 4g of myo-inositol plus 100mg of D-chiro-inositol at 40:1, which our profile identifies as the ratio used in the PCOS trials it cites. When the formulas match this closely, the comparison collapses to verification and price.
Theralogix Ovasitol carries NSF Certified for Sport, which our notes call the strictest third-party purity standard in the supplement industry, and our notes describe it as the only 40:1 inositol product on the market with that status. Wholesome Story is Clean Label Project Certified and third-party tested, with no NSF or USP mark. Both are unflavored powders that disclose both inositol forms and amounts with no proprietary blends.
On cost, Theralogix is about $0.96 per day at 4g from a $86.68 canister of 180 servings, and Wholesome Story is about $0.67 per day from $29.99 for 90 servings. We scored both on dosing and form, purity verification, value, and label transparency.
Detailed Score Breakdown
Ovasitol Inositol Powder, 90-Day Supply (Canister)
Theralogix
Delivers the exact 4 g myo + 100 mg D-chiro at 40:1 ratio used in the Unfer and Nordio PCOS trials
Theralogix Ovasitol carries the NSF Certified for Sport mark, the strictest third-party purity standard in the supplement industry
$0.96/day at 4 g (2 scoops) for the canister format after a price rise, premium pricing offset by NSF certification
Full disclosure of myo and D-chiro amounts, NSF-verified label, no proprietary blends
The only 40:1 inositol product on the market with NSF Certified for Sport status, recommended by many reproductive endocrinologists
Myo-Inositol & D-Chiro Inositol Powder (40:1)
Wholesome Story
Delivers the clinical 4 g myo + 100 mg D-chiro at 40:1 PCOS dose
Wholesome Story products are Clean Label Project certified and third-party tested, no NSF or USP mark
$0.67/day at 4 g (2 scoops) for the powder, strong value among 40:1 PCOS products
Full disclosure of both inositol forms and amounts, no proprietary blends
The value pick for PCOS dosing if NSF certification is not a priority
How We Compared These Products
Every product in our database is scored on four equally-weighted pillars: dosing accuracy and form quality, purity verification (third-party testing), cost per clinically effective dose (not cost per pill), and label transparency. Each pillar is worth 25 points for a total of 100.
Cost per effective dose is calculated using the clinically studied dose from published research, not the manufacturer's suggested serving. If a product requires multiple servings to reach the dose used in clinical trials, that cost is reflected in the value score.
For a full explanation of our scoring methodology, see our methodology page. Prices were last checked on the dates listed for each product and may have changed.
Frequently Asked Questions
Do both products use the same 40:1 inositol ratio?
Yes. Both deliver 4g of myo-inositol plus 100mg of D-chiro-inositol at the 40:1 ratio our profile identifies as the one used in the PCOS trials it cites, and both score a full 25 on our dosing and form pillar as a result.
Which inositol powder is cheaper per day?
Wholesome Story, at about $0.67 per day against Theralogix at about $0.96. The containers are $29.99 for 90 servings and $86.68 for 180 servings. Our value pillar scores that 22 to 19, and it is the only pillar Wholesome Story wins.
Is the NSF certification worth the price difference?
That depends on you, and in our view it is the only real question in this comparison. Theralogix Ovasitol is NSF Certified for Sport, which our notes call the strictest third-party purity standard in the supplement industry, and that is what separates the two on our purity verification pillar, 25 to 19. Wholesome Story is Clean Label Project Certified and third-party tested but carries no NSF or USP mark.
More Inositol Comparisons
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FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before starting any supplement regimen.