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Glycine 3g vs Ashwagandha (KSM-66) — Which Should You Take?

Glycine 3g

★★★★★

amino acids

Typically £8–£25/month

Ashwagandha (KSM-66)

★★★★★

adaptogens

Typically £8–£25/month
Feature
Glycine 3g
Ashwagandha (KSM-66)
Typical Dosage
3g per day
300-600mg daily (KSM-66 extract)
Best Form
Powder
KSM-66
Key Benefits
5 listed
5 listed
Evidence Rating
★★★★★
★★★★★
Best Time
Evening for sleep support; anytime for general benefits
Evening for sleep, or split morning/evening for stress
Upper Limit
10g per day
1,200mg daily
Side Effects
3 noted
4 noted

Glycine 3g Benefits

✓Improved sleep quality and sleep onset
✓Reduced daytime fatigue and hypersomnolence
✓Cognitive function and mental clarity
✓Joint and connective tissue support
✓Nervous system regulation

Ashwagandha (KSM-66) Benefits

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

Glycine 3g Side Effects

⚠Mild gastrointestinal upset at high doses
⚠Sedation or fatigue with evening dosing
⚠Bitter taste in powder form

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 Glycine 3g and Ashwagandha (KSM-66) Together?

In most cases, Glycine 3g 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.

Glycine 3g: Minimal interactions; may potentiate sedative medications

Glycine 3g: Generally safe with other supplements and pharmaceuticals

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

Ashwagandha (KSM-66): Sedatives — additive drowsiness

Which Should You Choose?

Choose Glycine 3g if your primary goal is: improved sleep quality and sleep onset. Choose Ashwagandha (KSM-66) if your primary goal is: reduces cortisol and perceived stress.

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Frequently Asked Questions

Is Glycine 3g better than Ashwagandha (KSM-66)?

It depends on your goals. Glycine 3g and Ashwagandha (KSM-66) serve different purposes and are often taken together.

Can I take Glycine 3g and Ashwagandha (KSM-66) together?

In most cases, yes. Glycine 3g 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 Glycine 3g?

Evening for sleep support; anytime for general benefits

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 Glycine 3g?

Mild gastrointestinal upset at high doses. Sedation or fatigue with evening dosing. Bitter taste in powder form.

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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