VitalMatrix
Comparison

TMG (Trimethylglycine) vs L-Tyrosine

Both are commonly considered for energy. Here is how they compare and how to choose.

By the Vital Matrix Editorial TeamReviewed by the Vital Matrix Research TeamLast updated June 25, 2026
TMG (Trimethylglycine)A methyl-donor cousin of glycine for homocysteine, liver, and power.L-TyrosineThe dopamine precursor that sharpens focus under stress.
Category
Amino Acids
Amino Acids
Evidence
Moderate
Moderate
Best for
Heart health, Energy, Liver health
Brain health, Mood, Energy, Stress
Top benefit
Lowers homocysteine
Preserves cognition under stress
Typical dose
2.5 g/day for performance; 3–6 g/day studied for homocysteine
500–2,000 mg taken 30–60 minutes before a stressful task or period of sleep deprivation
Timing
With meals; performance studies often split it into two daily doses
On an empty stomach, 30–60 min before the stressful event
Main caution
Fishy body odour at high doses
Restlessness or anxiety

How to choose

Choose TMG (Trimethylglycine) if your focus is heart health and liver health. Choose L-Tyrosine if you care more about brain health, mood, and stress. Both are reasonable options for energy.

Can you take them together?

TMG (Trimethylglycine) and L-Tyrosine have no notable direct interaction, so they can generally be taken in the same routine. They are compared here because they are often considered for the same goals.

Frequently asked

What is the difference between TMG (Trimethylglycine) and L-Tyrosine?

TMG (Trimethylglycine) is a methyl-donor cousin of glycine for homocysteine, liver, and power. L-Tyrosine is the dopamine precursor that sharpens focus under stress.

Should I take TMG (Trimethylglycine) or L-Tyrosine?

Choose TMG (Trimethylglycine) if your focus is heart health and liver health. Choose L-Tyrosine if you care more about brain health, mood, and stress. Both are reasonable options for energy.

Can I take TMG (Trimethylglycine) and L-Tyrosine together?

TMG (Trimethylglycine) and L-Tyrosine have no notable direct interaction, so they can generally be taken in the same routine. They are compared here because they are often considered for the same goals.

TMG (Trimethylglycine) guide L-Tyrosine guide

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