Theralogix Ovasitol Review
Ovasitol from Theralogix is presented as a research-based inositol blend of myo-inositol and d-chiro-inositol, positioned as the number one inositol supplement to support healthy insulin and hormone levels, menstrual regularity, and fertility. Each serving provides 2,000 mg of myo-inositol and 50 mg of D-chiro-inositol in the body's natural 40:1 ratio. The product is unflavored and sold in a recyclable canister with a scoop or in convenient single-serving packets. The page lists the 90-day supply at $73.68 on subscription, with a one-time purchase price of $86.68 and free shipping mentioned. Listed benefits include support for hormone health, insulin sensitivity, healthy blood sugar and lipid levels, regular menstrual cycles, healthy ovarian function, fertility, and healthy egg quality in women trying to conceive. The page describes the product as 100% pure inositol with no fillers, artificial colors, flavors, or unnecessary ingredients. It states the product is independently tested and content certified, made in the USA in a cGMP-compliant facility using globally sourced ingredients. Suggested use is to stir one packet or one leveled scoop into any non-carbonated beverage, taking two servings per day, one in the morning and one in the evening. The page notes FSA/HSA eligibility and displays NSF, dye free, gluten free, and vegan icons. The FAQ section explains that Ovasitol is the first and only 40:1 inositol supplement independently tested and certified by NSF International, and that it is designed for continuous long-term use, with menstrual benefits generally expected after at least three months of daily use. It states that Ovasitol can be taken during pregnancy and breastfeeding, that there are no expected side effects, and that it can be taken with most meds and supplements, with caution noted for DHEA and blood sugar medications, and separation of at least one hour from meds. The page also compares Ovasitol with Ovasitol Plus, which adds alpha-lactalbumin, chromium picolinate, and vitamin D3 for additional absorption and metabolic support.
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Study, Trial or Testing Result Summary
Members Only7 human studies · 3 improved
Ovasitol's main ingredient, myo-inositol, is taken at 4000 milligrams a day, well above the dose used in studies, but the research for women's hormone goals is mixed and the strongest studies are negative. A 2026 pooled analysis of 16 trials in women with polycystic ovary syndrome found no significant change in insulin resistance, and the largest weight losses came from a newer class of meds, not inositol [1]. A 2014 pooled analysis of 11 placebo-controlled trials found no significant improvement in mood symptoms, with only a trend toward less depression in severe premenstrual mood disorder [2]. A small trial of 11 women found 12 grams a day gave no premenstrual benefit over placebo [3]. On the positive side, one controlled trial found myo-inositol improved premenstrual symptom and depression scores [4], and a six-month trial in 40 women going through menopause found 4 grams a day lowered insulin [5]. The second ingredient, D-chiro-inositol, is present at only 100 milligrams a day, well below the 600 milligrams that thinned the uterine lining and reduced heavy bleeding in a small study without a comparison group [6]. A study showing smaller endometriosis lesions was done in mice, not people [7]. Animal and cell studies are never counted.
See all 7 studies →Hide the studies
- Pooling 11 placebo-controlled trials (312 people with depression or anxiety, including two trials in premenstrual dysphoric disorder), inositol did not significantly improve symptoms, though there was a trend toward benefit for depression in premenstrual dysphoric disorder.A meta-analysis of inositol for depression and anxiety disorders.
- In a pooled analysis of 16 trials in women with polycystic ovary syndrome, none of the treatments significantly changed insulin resistance, and the largest weight and body mass index reductions came from meds, not inositol.Read the study on PubMed (42490840) →
- In 40 women going through menopause, 4 grams a day of myo-inositol alone or with melatonin for 6 months lowered insulin in both groups, and thyroid-stimulating hormone fell only in the myo-inositol-alone group.Myo-inositol and melatonin in the menopausal transition.
- In a small crossover trial of 11 women with premenstrual dysphoric disorder, 12 g of myo-inositol daily during the luteal phase gave no benefit over placebo glucose across six menstrual cycles.Myo-inositol has no beneficial effect on premenstrual dysphoric disorder.
- In women with premenstrual dysphoric disorder, myo-inositol as powder or soft gel capsules improved daily symptom, depression and overall severity scores compared with placebo, with similar results for both forms.Myo-inositol in the treatment of premenstrual dysphoric disorder.
- In a small pilot study of women with simple endometrial hyperplasia without atypia, taking 600 mg of D-chiro-inositol daily for six months thinned the uterine lining from about 10.8 mm to 6.9 mm and reduced heavy menstrual bleeding, though the study had no control group.D-Chiro-Inositol in Endometrial Hyperplasia: A Pilot Study.
- In a mouse model of endometriosis, D-chiro-inositol given for 28 days at 0.4 mg per day reduced the number, size and blood vessel growth of endometriotic lesions compared with untreated mice; this was an animal study, not a human trial.D-chiro-inositol effectively counteracts endometriosis in a mouse model.
Review Totals and Summary
Members Only4,514 reviews · 89% positive
Across the stores that sell it, Theralogix Ovasitol powder carries about 4,512 ratings, and the feedback is largely positive. Most buyers are women using it for PCOS or cycle support, and the main complaints are cost and a few reports of expired product. **What buyers say it did for them:** The most common report is more regular periods. One says it is "helping with my periods" after three months, and another says it "really does have an effect in terms of regularising periods." Some describe wider effects: less bloating and fewer sweet cravings ("curbed my sweets cravings, no breakouts or upset stomach either"), better mood, and easier sleep. One reviewer felt more energy from day one. Another took it for five months and got pregnant, writing "I think it helped improve my egg quality at 42." Some of these are early impressions after one to two weeks, so they are not long-term results. **What they complain about:** The serious complaints concern expiry dates. One buyer says the "Product has passed expiration day." Another found a sticker with a "new" date and, under it, an expiration date a year earlier. These are a small minority, but both gave one star. Another reviewer's one caution is that taking it without protein could upset the stomach. A store summary says no reviewer there reported a serious side effect. **Taste, smell and form:** Buyers agree the powder is flavorless and mixes easily. Reviewers say it has "no taste and easy to drink" and is easy to mix into water or tea. One adds that it dissolves better in hot drinks than in cold ones. One suggests taking it with coffee and a first meal that includes protein. **Value for money:** Cost is the main complaint, though not a deal-breaker. One reviewer says it is "quite expensive though" but still praises the effect. A store summary says buyers accept the higher price for results they can see. One reviewer notes a single box lasts about three months. Several repeat buyers are on their second or third tub, which suggests they find it worth the money. **Who it seems to suit and who it did not:** It suits women with PCOS or irregular cycles. One calls it "hands down the best inositol for PCOS," and others like that it is the original product with the right ratio and quality standards. People wanting help with sugar cravings, anxiety or sleep also report some benefit. One reviewer who tried a different inositol brand said it made them bloated and gain weight, and found this one did not. The people it did not suit are the buyers who received expired product. Check the expiration date when it arrives. Reviews of other forms of this product, such as gummies and capsules, were left out; this summary covers only the powder.
Biohacker Summary
Members Only4 of 10 recommend it
Inositol is the main ingredient here, and nine of the ten panelists spoke about it, with most either recommending it or taking it themselves. The most common reason is sleep: five panelists take 900 mg before bed, one takes about 5 grams in water at night, and another takes it in the evening to calm mental chatter. Others point to blood sugar and insulin sensitivity, female fertility at 1 to 5 grams a day, mood and anxiety, and obsessive thoughts, and the myo-inositol form comes up most often, with one mention of the D-chiro form. One panelist said it is not strongly evidenced as a sleep aid, and another said its effects on blood sugar and cholesterol are not massive, while none of the panelists reported stopping it.
See all 9 biohackers →Hide the biohackers
Dr. Mark Hyman · Inositol · recommends
- Lists inositol as a supplement that helps balance neurotransmitters and can help lower anxiety or depression symptoms.
- Takes 900 mg of Inositol before bed for sleep.
- Takes 900 mg of Inositol before bed for sleep.
- Takes 900 mg of inositol before bed for sleep.
- Takes 900 mg of inositol before bed for sleep.
- Takes 900 mg of inositol before bed for sleep.
- Recommends inositol for fertility.
- Recommends inositol, considered a B vitamin, for brain and mood function and anxiety, found in oranges, grapefruit, chickpeas, lentils, almonds, peanuts, and leafy greens.
- Added a combination product with myo-inositol and D-chiro-inositol to a young woman's regimen, which helps improve insulin sensitivity and cell signaling.
- Personally started taking myoinositol over a year ago and finds it very helpful for sleep architecture, inducing and maintaining sleep, and quieting the autonomic nervous system. She recommends starting with 1 gram a day and titrating based on symptoms.
Andrew Huberman · Inositol · neutral
- Discusses Myo-Inositol as a tool for middle-of-the-night waking.
- Discusses Myo-inositol as a supplement that can impact serotonin.
- Has been taking 900 mg of myo-inositol every third night or so to test its ability to improve sleep, finding the depth and quality of sleep to be remarkable.
- Takes 900 mg of Inositol before bed for sleep.
- Mentions inositol as a nutraceutical that can be used for bipolar disorder.
- Personally takes 900 mg of myo-inositol every third night or so to improve sleep and for its anti-anxiety effect during the day, but not for bipolar disorder.
- Mentions Inositol as a nutraceutical for OCD.
- Highlights myoinositol, stating that 900 milligrams or higher dosages can improve sleep and reduce anxiety, and suggests more systematic exploration of nutraceuticals like inositol for OCD treatment, especially in combination with behavioral therapies.
- Takes 900 mg of Inositol before bed for sleep.
- Mentions inositol for PCOS, stating it decreases insulin resistance and offers a huge benefit.
Ben Greenfield · Inositol · neutral
- Notes that inositol has solid research behind it for fertility.
- Recommends Inositol at 1 to 5 grams per day for women, noting its involvement in FSH signaling and citing trials showing fewer immature oocytes and more high-quality embryos in women undergoing IVF.
- He discusses inositol for female fertility.
- Myo-inositol has the same insulin-sensitivity mechanism as in men and is tied to egg quality.
- Mentions Inositol with a dose of 1-5 grams/day.
- Takes 900 mg of Inositol before bed for sleep.
- Now uses myo-inositol as a natural strategy instead of a med and as a natural insulin-sensitizer.
- Recommends Myo-inositol as a strong evidence-backed supplement for insulin resistance and PCOS, suggesting a dose of around 2g a couple of times a day.
- He takes 900 mg of Inositol before bed for sleep.
- Takes 900 mg of Inositol before bed for sleep.
Siim Land · Inositol · neutral
- States that Inositol has been shown to improve blood sugar and insulin sensitivity.
- States that Inositol has a key role in glucose metabolism and that grapefruit is one of the richest sources of it.
- He takes 900 mg of Inositol before bed for sleep.
- He takes 900 mg of inositol before bed for sleep.
- Describes Inositol as interesting, noting it is sweet-tasting like glycine and found in grapefruit, and that it lowers blood sugar and cholesterol, though the effects are not massive.
- Likes inositol, stating it helps with neurotransmitters, mood, and blood sugar regulation, placing it in the 'good tier'.
- Used to take inositol in the past but no longer does, as he has already tested most supplements.
- Recommends Inositol, stating that it helps with neurotransmitters, mood, and blood sugar regulation.
- Discusses Inositol as a supplement.
- Lists inositol as one of the three healthiest sweeteners that have no sugar.
Dave Asprey · Inositol · uses
- He takes 900 mg of Inositol before bed for sleep.
- Dave and Lucas break down compounds and systems discussed in the episode including solbutiamine, lithium orotate, sarcosine, inositol, uridine, testosterone, growth hormone, ketamine pathways, thyroid optimization, liver health, sleep quality, and desire regulation.
- Takes about 5 grams of inositol in water at night, noting its amazing and broad-spectrum benefits, especially for mental health.
- Uses Inositol Tris Pyrophosphate (ITPP) sublingually three times a week, taking 250 milligrams, and describes it as feeling like EPO in a capsule, massively improving endurance and mental clarity.
- Recommends utilizing myoinositol to help with sleep by balancing blood sugar.
- Began seeing that people had to have foods high in inositol because it was a nutrient important for the liver to burn fats.
Bryan Johnson · Inositol · uses
- Takes 900 mg of Inositol before bed for sleep.
- Takes 900 mg of Inositol before bed for sleep.
- Takes 900 mg of inositol before bed for sleep.
- Takes 900 mg of Inositol before bed for sleep.
- Takes 900 mg of Inositol before bed for sleep.
- Takes 900 mg of Inositol before bed for sleep.
- Takes 900 mg of Inositol before bed for sleep.
Dr. Rhonda Patrick · Inositol · uses
- Has found myo-inositol helps calm "mental chatter" before bed, although it is not strongly evidenced as a sleep aid.
- Discusses why and how much myo-inositol they took.
- Rhonda's current supplement routine includes Myo-inositol.
- Oh, I also forgot to mention that I take myo-inositol in the evening as well, a scoop of it, and that's Pure Encapsulations.
- Dr. Rhonda Patrick explores if inositol can improve sleep.
- She has been taking one scoop of myo-inositol mixed with water at night, noting a potential benefit to her sleep and its importance for reproductive health.
- She mentions myo-inositol as part of a sleep stack but has not looked into its effects for sleep in depth.
Dr. Eric Berg · Inositol · recommends
- Recommends taking inositol as part of a natural remedy for eye floaters, citing older versions of the PDR.
- Lists Myo-inositol as one of the best natural remedies for OCD.
- Suggests that myo-inositol may also be needed if one has Hashimoto's.
- Recommends myoinositol, part of the B complex, as a natural remedy for OCD, citing good randomized double-blinded control studies.
- Recommends taking myo inositol in addition to other recommendations for Hashimoto's.
- Recommends inositol hexaphosphate (IP6) as a beneficial form of phytic acid for reducing iron.
- Mentions Inositol as another good thing to take for PCOS.
- Recommends taking inositol to help with PCOS and to reset the flow of hormones after an estrogen crash from stopping birth control pills.
- Dr. Berg recommends using inositol for PCOS.
- Recommends D-chiro-inositol, a form of inositol, as it is essential for the hypothalamus-pituitary-gonad axis, helps with many female problems, and makes insulin more sensitive, which is beneficial for PCOS and infertility.
Thomas DeLauer · Inositol · neutral
- Mentions D-chiro inositol as a compound found in buckwheat that has been demonstrated to be very powerful at improving insulin sensitivity.
RAL Summary
Members OnlyTier 3 for Hormone Balance for Women
Tier 3 rests on reviews: 89% of 4514 reviews are positive. Study support is thin and mixed, with two positive trials for myo-inositol [4][5] against negative pooled analyses [1][2].
- D-Chiro-Inositol: below the dose that worked in studies
Where the evidence disagrees: 3 of the 7 human studies found no effect.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Endocrine system, Reproductive system, Metabolic system, Nervous system
Combine with: For women's hormonal and ovarian support, Ovasitol pairs well with folate (methylfolate) or a quality prenatal if conception is a goal, vitamin D to support ovulatory and metabolic health, omega-3 fish oil for inflammation and lipid support, and magnesium to aid insulin sensitivity and stress. N-acetylcysteine (NAC) has evidence in PCOS alongside inositols, and coenzyme Q10 may support egg quality. If blood sugar support is also desired, berberine or chromium can be considered, but only under clinician guidance, especially with meds, since additive glucose lowering can occur.
Possible side effects: No major side effects reported in the studies given. Buyer feedback mentions occasional upset stomach when taken without food or protein.
Supplement Facts
Myo-Inositol 2000 mg · D-Chiro-Inositol 50 mg
| Myo-Inositol | 2,000 mg | † |
| D-Chiro-Inositol | 50 mg | † |
Directions: Directions for Use: Take one leveled scoop twice a day, or as directed by a healthcare professional. One scoop in the morning and one in the evening. Mix into any liquid. Stir until powder is dissolved. Take with food. Pour 1 scoop, then stir.
Label source: NIH label database · Report a label change
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Graded November 4, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.
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