Product Image

D-Chiro-Inositol

Swanson Ultra
4.8
★ ★ ★ ★ ★
(668 ratings)
Manganese 3.6 mg
Product Image
Score78
A simple, economical inositol-and-manganese capsule. Modest inositol and basic manganese sulfate limit its strength.
How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:

Score 78

A simple, economical inositol-and-manganese capsule. Modest inositol and basic manganese sulfate limit its strength.
How scoring works
$20.29($0.33 per serving)
iHerb
$ 20.29
iHerb
$ 20.29
Report prices

Analysis

The capsule provides 85 mg D-chiro-inositol from a named carob extract and 3.6 mg manganese. Its two-active design is easy to understand and inexpensive to use.

The D-chiro-inositol amount is lower than many focused formulas, which may limit its practical effect. Manganese sulfate is less absorbable than a glycinate or citrate form.

It may fit users seeking a low-dose inositol product with added manganese. People primarily shopping for either active can find more targeted formulas with stronger form or dose choices.

Who is it for
  • Adults seeking low-dose D-chiro-inositol
  • Users wanting manganese alongside inositol
  • People preferring a simple capsule
Best for
  • Low-dose inositol routines
  • Maintenance manganese intake
  • Simple two-ingredient supplementation

Pros

  • Named carob-derived inositol source
  • Clearly disclosed active amounts
  • Low serving cost

Cons

  • Inositol amount is modest
  • Manganese sulfate is a basic form
  • Limited flexibility in dosing the two actives separately

Warnings

  • D-chiro-inositol may lower blood glucose and can require care with glucose-lowering medicines
  • The 3.6 mg manganese amount should be counted with multivitamins
  • Pregnant users should confirm the suitability of concentrated inositol products with a qualified professional

Nutrient quality

72 High impact

The compact formula has a plausible ingredient pairing. Manganese sulfate and a modest D-chiro-inositol amount weaken nutrient quality.

Ingredient transparency

81 Highest impact

Both active ingredients have specific amounts and recognizable names. Serving count is shown, but use directions and inactive ingredients are not supplied.

Customer satisfaction

71 High impact

The supplied satisfaction average is strong. The moderate response volume gives the average reasonable support, but no comment-level evidence was provided.

Value for money

86 Highest impact

Serving cost is very low relative to category alternatives. The low serving cost is favorable for a compact two-ingredient formula.

Report analysis

Ingredients

IngredientAmount per serving
Manganese (Manganese Sulfate)
 3.6 mg
D-Chiro-Inositol (Chirositol M Carob extract)
 85 mg
Adults 18–50
Report overview
Manganese (Manganese Sulfate) · 3.6 mg OverallScore70
D- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyA+ Value

The clearly disclosed amount is adequate for maintenance but sits just below the targeted range. Manganese sulfate is a less absorbable inorganic form than chelates or organic-acid salts. The serving cost is very low, though most of the formula is designed around D-chiro-inositol rather than manganese.

View ingredientView products
Loading alternative details
80 Performance

Silica Complex

NOW
The use of 2 mg chelated manganese alongside modest zinc and boron improves ingredient fit and clarity compared with the original’s modest D-chiro-inositol formula with manganese sulfate. The main horsetail extract lacks species, plant-part, and silica-yield details.
63 Performance

Ionic Manganese 10 mg

Trace Minerals Research
The use of 10 mg manganese gluconate in an easy-to-adjust liquid improves ingredient fit and clarity compared with the original’s modest D-chiro-inositol formula with manganese sulfate. A large unspecified trace-mineral component limits label clarity, and the manganese amount is not suitable for casual stacking.
72 Performance

Hyaluronic Joint Complex

Source Naturals
The use of 5 mg manganese ascorbate with collagen, glucosamine, chondroitin, and MSM improves ingredient fit and clarity compared with the original’s modest D-chiro-inositol formula with manganese sulfate. Overlapping source entries make some joint-ingredient amounts harder to interpret.
86 Budget

Manganese 10 mg

Source Naturals
A lower recurring cost and a focused 10 mg manganese amino acid chelate improve practical value compared with the original’s modest D-chiro-inositol formula with manganese sulfate. The chelate ligand is not identified, and the amount leaves little room for manganese from other supplements.
88 Budget

Chelated Manganese

Solgar
A lower recurring cost and an 8 mg manganese glycinate chelate with a clear elemental amount improve practical value compared with the original’s modest D-chiro-inositol formula with manganese sulfate. The dose is meaningful, so total manganese from food and other supplements still matters.
87 Budget

Chelated Manganese

Bluebonnet
A lower recurring cost and a clearly named 10 mg manganese bisglycinate chelate improve practical value compared with the original’s modest D-chiro-inositol formula with manganese sulfate. The amount sits near the adult upper limit and should not be stacked with other manganese supplements.
83 Value

Extra Strength Glucosamine Chondroitin

Source Naturals
The combination of 1.5 g glucosamine, 1.2 g chondroitin, and 6 mg manganese ascorbate with separate amounts provides stronger ingredient utility for the cost than the original’s modest D-chiro-inositol formula with manganese sulfate. The molybdenum complex does not identify its ligand, but the main joint actives are clear.
79 Value

Osteo Bi-Flex Triple Strength

Osteo Bi-Flex
The combination of 1.5 g glucosamine plus branded Boswellia and 2 mg manganese provides stronger ingredient utility for the cost than the original’s modest D-chiro-inositol formula with manganese sulfate. The combined chondroitin and MSM amount hides each contribution, and Boswellia standardization is not stated.
63 Value

Glucosamine Chondroitin Complex

Puritan's Pride
The combination of a low-cost joint complex with 2 mg manganese and vitamin C provides stronger ingredient utility for the cost than the original’s modest D-chiro-inositol formula with manganese sulfate. The combined complex hides separate glucosamine and chondroitin amounts, while manganese sulfate is less favorable.
Report alternatives