D-aspartic acid vs Glycine

Evidence-based comparison of D-aspartic acid and Glycine — absorption, dosage, safety, and which is best for your needs.

Reviewed by: Supplement Hub Editorial Team · Category: Amino acid · Updated:

D-aspartic acid

Testosterone support: Supports testosterone synthesis or signaling

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Glycine

Sleep regulation: Supports neurotransmitters and pathways involved in sleep; Antioxidant activity: Neutralizes free radi

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Detailed Comparison

	D-aspartic acid	Glycine
Category	Amino acid	Amino acid
Mechanism	Testosterone support: Supports testosterone synthesis or signaling	Sleep regulation: Supports neurotransmitters and pathways involved in sleep; Antioxidant activity: Neutralizes free radi

Which Should You Choose?

D-aspartic acid may be better if: Testosterone support: Supports testosterone synthesis or signaling

Glycine may be better if: Sleep regulation: Supports neurotransmitters and pathways involved in sleep; Antioxidant activity: Neutralizes free radicals and reduces oxidative str