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 Rosemary a trigger for histamine intolerance?
Rosemary scores a 0 out of 3 on the SIGHI Food Compatibility List, placing it in the Safe category.
Rosemary & Histamine, what the evidence says
Rosemary is compatible with a low-histamine approach.
Its more distinctive consideration involves concentrated forms, specifically essential oil. Rosemary essential oil contains compounds such as camphor and 1,8-cineole that have demonstrated convulsant properties in experimental studies. A published case report described a breakthrough seizure in a person with a history of epilepsy following a massage with a blend containing rosemary essential oil. The authors suspected camphor, which is present in rosemary oil, as the likely pro-convulsant agent. Animal studies have also found that camphor and 1,8-cineole can induce seizures at sufficiently high doses. This risk is specific to concentrated essential oil rather than rosemary used as a culinary herb, and is particularly relevant for people with epilepsy or a seizure disorder.
Rosemary is also high in salicylates, a separate consideration from histamine. Its oxalate content, by contrast, is low.
Does preparation change the risk?
Form matters enormously for rosemary, far more than for most herbs in this category.
| Form | Risk Level | Notes |
|---|---|---|
| Fresh or dried, culinary amounts | Low | Compatible with a low-histamine approach; low in oxalate |
| Larger or regular culinary use | Moderate | High in salicylates; worth factoring in if managing that sensitivity |
| ⚠️ Concentrated essential oil, any use, if you have epilepsy or a seizure disorder | High | Contains camphor and 1,8-cineole, compounds with documented convulsant properties in experimental studies and case reports |
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
Avoid concentrated essential oil if you have epilepsy.Rosemary essential oil contains camphor and 1,8-cineole, compounds with documented convulsant properties. This applies to both topical and internal use of the concentrated oil.
Culinary use is a different consideration.The seizure risk is specific to concentrated essential oil, not rosemary used as a fresh or dried herb in cooking.
Factor in salicylates.Rosemary is high in salicylates. If you're managing salicylate sensitivity alongside histamine, this is worth tracking.
Low in oxalate.Rosemary tests low in oxalate content, unlike some other herbs and spices.
Keep culinary amounts reasonable.Compatible with a low-histamine approach in typical culinary use.
Track your response in MyHistaMap.Log the form of rosemary used (culinary versus essential oil) and any symptoms.
Common questions about Rosemary and histamine
Is rosemary high in histamine?
No, rosemary is compatible with a low-histamine approach.
Can rosemary essential oil cause seizures?
It's a documented risk, particularly for people with epilepsy. Rosemary oil contains camphor and 1,8-cineole, compounds with convulsant properties shown in experimental studies. A case report described a breakthrough seizure following a massage with a rosemary-containing oil blend, with camphor suspected as the likely trigger. This risk is specific to concentrated essential oil, not culinary use.
Is rosemary high in salicylates?
Yes, rosemary is considered high in salicylates, a separate consideration from histamine.
Is rosemary high in oxalates?
No, rosemary tests low in oxalate content.
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 rosemary with a histamine score of 0.
- Bahr TA et al., The Effects of Various Essential Oils on Epilepsy and Acute Seizure: A Systematic Review, Evidence-Based Complementary and Alternative Medicine, 2019: systematic review describing camphor and 1,8-cineole as convulsive agents identified in rosemary and other essential oils, inducing seizures in animal models at a dosage of 0.5 mL/kg. The source for this page's convulsant mechanism section.
- Mathew A et al., Essential oil-related status epilepticus: A small case series study, Journal of the American College of Emergency Physicians Open, 2020: describes a case report of a breakthrough seizure in a person with a history of epilepsy following massage with a rosemary-containing essential oil blend, with camphor suspected as the likely causative agent. The source for this page's case report.
- RPAH Elimination Diet Handbook, Swain, Soutter & Loblay, Royal Prince Alfred Hospital Allergy Unit: classifies rosemary among herbs and spices high in salicylates. The source for this page's salicylate section.
- Evaluation of Oxalate Content of Some Indigenous and Produced Spices and Seasonings in Ghana: direct laboratory measurement placing rosemary's oxalate content at approximately 3.4-10.2 mg/100g, a low value. The source for this page's oxalate figure.