Inositol (Myo-Inositol + D-Chiro-Inositol) vs Pycnogenol

Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.

Inositol (Myo-Inositol + D-Chiro-Inositol)Pycnogenol
CategorySupplementsSupplements
Standard Dose
Timing
Cycle Duration
Evidence LevelStrong (PCOS, anxiety), Moderate (general metabolic)Moderate

Mechanism

Secondary messenger in insulin signaling cascade. Myo-inositol improves insulin sensitivity, reduces anxiety (via serotonin receptor modulation), and supports ovarian function. D-chiro-inositol complements by activating glycogen synthesis. 40:1 ratio mimics physiological balance.

Contraindications

  • Bipolar disorder (inositol depletion theory — consult psychiatrist)
B

Pycnogenol

Supplements

Mechanism

Polyphenol-rich French maritime pine bark extract that improves endothelial nitric oxide signaling, capillary tone, and oxidative defense.

Contraindications

  • Use caution before surgery

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