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Myo-Inositol vs Ashwagandha (KSM-66) — Which Should You Take?

Myo-Inositol

vitamins

Typically £8–£25/month

Ashwagandha (KSM-66)

adaptogens

Typically £8–£25/month
Feature
Myo-Inositol
Ashwagandha (KSM-66)
Typical Dosage
2-4 grams daily in divided doses
300-600mg daily (KSM-66 extract)
Best Form
Powder
KSM-66
Key Benefits
6 listed
5 listed
Evidence Rating
★★★★
★★★★
Best Time
With meals to enhance absorption; typically split into morning and evening doses
Evening for sleep, or split morning/evening for stress
Upper Limit
4 grams daily
1,200mg daily
Side Effects
5 noted
4 noted

Myo-Inositol Benefits

Improves insulin sensitivity and glucose metabolism
Supports ovulatory function in PCOS
Enhances fertility and menstrual regularity
Promotes healthy lipid profiles
Supports mood and cognitive function
May reduce anxiety symptoms

Ashwagandha (KSM-66) Benefits

Reduces cortisol and perceived stress
Improves sleep quality
May increase testosterone in men
Anxiety reduction
Physical performance enhancement

Myo-Inositol Side Effects

Mild nausea or stomach upset at higher doses
Diarrhoea or loose stools (dose-dependent)
Headaches in sensitive individuals
Dizziness (rare)
Mild fatigue during initial use

Ashwagandha (KSM-66) Side Effects

Drowsiness (dose-dependent)
May worsen thyroid conditions (can increase thyroid hormones)
Mild digestive upset in some people
Not recommended during pregnancy

Can You Take Myo-Inositol and Ashwagandha (KSM-66) Together?

In most cases, Myo-Inositol and Ashwagandha (KSM-66) can be taken together safely. However, always check the interactions section of each supplement and consult a healthcare professional if you take medication or have existing health conditions.

Myo-Inositol: May enhance effects of insulin or diabetes medications

Myo-Inositol: Potential interaction with psychiatric medications affecting serotonin

Ashwagandha (KSM-66): Thyroid medications — may increase thyroid hormone levels

Ashwagandha (KSM-66): Sedatives — additive drowsiness

Which Should You Choose?

Choose Myo-Inositol if your primary goal is: improves insulin sensitivity and glucose metabolism. Choose Ashwagandha (KSM-66) if your primary goal is: reduces cortisol and perceived stress.

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Frequently Asked Questions

Is Myo-Inositol better than Ashwagandha (KSM-66)?

It depends on your goals. Myo-Inositol and Ashwagandha (KSM-66) serve different purposes and are often taken together.

Can I take Myo-Inositol and Ashwagandha (KSM-66) together?

In most cases, yes. Myo-Inositol and Ashwagandha (KSM-66) can be taken together safely. However, always check for specific interactions and consult a healthcare professional if you take medication.

What is the best time to take Myo-Inositol?

With meals to enhance absorption; typically split into morning and evening doses

What is the best time to take Ashwagandha (KSM-66)?

Evening for sleep, or split morning/evening for stress

What are the side effects of Myo-Inositol?

Mild nausea or stomach upset at higher doses. Diarrhoea or loose stools (dose-dependent). Headaches in sensitive individuals. Dizziness (rare). Mild fatigue during initial use.

What are the side effects of Ashwagandha (KSM-66)?

Drowsiness (dose-dependent). May worsen thyroid conditions (can increase thyroid hormones). Mild digestive upset in some people. Not recommended during pregnancy.

How We Compare Supplements

This comparison is based on published clinical research, peer-reviewed studies from PubMed, and established nutritional science. We evaluate dosages based on clinically-effective amounts, not manufacturer recommendations. Benefits listed have at least moderate evidence from human studies. When evidence is limited or conflicting, we note this.

Disclaimer: This comparison is for educational purposes only and is not medical advice. Always consult a qualified healthcare professional before starting any supplement, especially if you take medication or have existing health conditions.

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