VCVITAMINS/CHART

The Bottom Line

Use caution with L-Tyrosine and CBD together: the ingredients or formulations need review, and limited research does not establish the safety of this exact pair.

VERDICT

L-Tyrosine and CBD together require more care than a neutral matrix label suggests. CBD can change the metabolism of medicines, while interactions with many supplement extracts remain poorly characterized. A pharmacist should review the complete regimen; a two-hour gap does not reliably remove this uncertainty. The practical decision depends on the formulation, your medicines, and your response.

Use with caution Limited evidence
01 / MECHANISM

How They Interact

L-tyrosine is a precursor for catecholamines and thyroid hormones, but supplying more precursor does not reliably increase hormone production. CBD can affect liver enzymes involved in drug metabolism and can cause drowsiness. These individual roles do not establish that L-Tyrosine improves the absorption or effectiveness of CBD, or vice versa. Direct clinical evidence for this particular combination is limited. CBD can change the metabolism of medicines, while interactions with many supplement extracts remain poorly characterized. A pharmacist should review the complete regimen; a two-hour gap does not reliably remove this uncertainty.

02 / BEST PRACTICES

How To Take Them

Review levodopa, thyroid treatment, and monoamine oxidase inhibitors before taking tyrosine. Have a pharmacist review prescription medicines before adding CBD. There is no validated spacing interval that removes the concerns for this combination; reviewing the products and medicines is more useful than choosing an arbitrary time gap. If you miss a supplemental dose, resume the usual schedule instead of doubling the next dose; follow your prescriber's instructions for prescribed products.

03 / FORM MATTERS

Form & Quality Differences

L-tyrosine and N-acetyl-L-tyrosine are different preparations, with no reason to assume equivalent effects. CBD oils and gummies vary in content and may contain THC or other cannabinoids.

05

Practical Tips

06

Frequently Asked Questions

Who Should Be Careful CBD can change the metabolism of medicines, while interactions with many supplement extracts remain poorly characterized. A pharmacist should review the complete regimen; a two-hour gap does not reliably remove this uncertainty. People with thyroid disease or taking monoamine oxidase inhibitors should seek professional advice before use. CBD can cause liver injury and sedation; avoid use during pregnancy and breastfeeding and take care with driving.
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Sources & Further Reading

  1. NIH ODS NIH ODS — Dietary Supplements for Exercise and Athletic Performance
  2. FDA FDA — Cannabidiol (CBD) in Foods
  3. NCCIH NCCIH — Using Dietary Supplements Wisely

Reviewed by Caroline M. on October 20, 2026 for accuracy against the sources listed above. This page is educational and is not a substitute for professional medical advice.

WANT THE FULL PICTURE?

The matrix has 86 supplements and 7310 pairwise interactions. Click any cell to see the full breakdown.

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