This content is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before making dietary changes. Histamine tolerance is highly individual.
This information applies to histamine intolerance, DAO deficiency, and MCAS only. If you have a confirmed food allergy, this content does not apply to you. Food allergies involve the immune system and can be life-threatening. Please consult your allergist.
Is Thyme a trigger for histamine intolerance?
Thyme scores a 0 out of 3 on the SIGHI Food Compatibility List, placing it in the Safe category.
Thyme & Histamine, what the evidence says
Thyme is compatible with a low-histamine approach.
Its more distinctive consideration involves levothyroxine. A published case report described a woman on long-term levothyroxine for hypothyroidism who developed heart palpitations after drinking thyme tea for a cold, with symptoms resolving after reducing her thyme intake. The relationship was rated probable on a standard causality assessment scale, though it is based on a single case rather than broader clinical data. This is worth being aware of with regular or concentrated thyme use, such as tea, for anyone taking levothyroxine.
Thyme is also high in both oxalate and salicylates, separate considerations from histamine.
Does preparation change the risk?
Amount and regularity of use matter for thyme, both for levothyroxine and for its oxalate and salicylate content.
| Form | Risk Level | Notes |
|---|---|---|
| Small amount, culinary seasoning | Low | Compatible with a low-histamine approach |
| Larger or regular culinary use | Moderate | High in oxalate and salicylates; worth factoring in if managing either sensitivity |
| ⚠️ Regular or concentrated use (such as tea), if taking levothyroxine | Moderate | A case report described a probable relationship between thyme tea and palpitations in a levothyroxine patient; based on a single case rather than broader clinical data |
Note: Risk levels are based on clinical observations and patient reports, not standardized histamine measurements. Individual tolerance varies.
A food score is a reference, not a verdict.
Histamine intolerance is highly individual. A food that triggers symptoms in one person may be tolerated by another, even within the same category.
Strict elimination may help reduce symptoms initially, but long-term progress often depends on gradual reintroduction and pattern recognition. The goal is not to remove more foods over time, but to understand your personal tolerance and expand your diet when possible.
Tracking symptoms, portions, and context such as stress or timing can provide insights that generalized food lists cannot. This is where informed decisions replace fear-based restriction.
How to test your tolerance
Be aware if you take levothyroxine.A case report described palpitations in a levothyroxine patient after drinking thyme tea, rated a probable relationship. This is based on a single case, but worth mentioning to your prescriber with regular or concentrated thyme use.
Culinary seasoning is a different consideration.The case report involved thyme tea, not the small amounts typically used to season food.
Factor in oxalate and salicylates.Thyme is high in both. If you're managing either sensitivity alongside histamine, this is worth tracking with regular or larger use.
Keep culinary amounts reasonable.Compatible with a low-histamine approach in typical culinary use.
Thyme tea is more concentrated than a pinch of the dried herb.Brewed tea extracts more of thyme's compounds than a light culinary seasoning, relevant for both the levothyroxine consideration and overall oxalate/salicylate intake.
Track your response in MyHistaMap.Log the form and amount of thyme used, especially if you take levothyroxine.
Common questions about Thyme and histamine
Is thyme high in histamine?
No, thyme is compatible with a low-histamine approach.
Can thyme affect levothyroxine?
There's a documented but limited case-report consideration. A woman on levothyroxine developed palpitations after drinking thyme tea, with symptoms resolving after reducing her intake, rated a probable relationship. This is based on a single case, but regular or concentrated thyme use, such as tea, is worth mentioning to a healthcare provider if you take this medication.
Is thyme high in oxalates or salicylates?
Yes, thyme is high in both, separate considerations from histamine.
Is thyme tea different from culinary thyme?
Yes. Thyme tea is a more concentrated form than the small amounts used to season food, relevant both for the levothyroxine consideration and for overall oxalate and salicylate intake.
Some people find these options helpful
Supplements are optional tools, not a solution. Personal tracking and identifying your individual triggers remains the priority.
Where this information comes from
At MyHistaMap we curate information from peer reviewed research and recognized medical sources. This guide is a reference tool, not a medical prescription. Always track your own reactions and consult your healthcare provider.
References
- SIGHI (Swiss Interest Group Histamine Intolerance) Food Compatibility List: classifies thyme (common thyme, German thyme, garden thyme, Thymus vulgaris) with a histamine score of 0.
- Probable interaction between levothyroxine and Thymus vulgaris, Journal of Pharmacy & Pharmacognosy Research, 2024: case report of a 52-year-old woman on levothyroxine (150 mcg/day) who developed palpitations after drinking Thymus vulgaris tea, with symptoms resolving after reducing intake; scored 6 (probable) on the Naranjo causality scale. The source for this page's levothyroxine case report section.
- RPAH Elimination Diet Handbook, Swain, Soutter & Loblay, Royal Prince Alfred Hospital Allergy Unit: classifies thyme among herbs and spices high in salicylates. The source for this page's salicylate section.