A research review of human and relevant scientific studies on Citrus aurantium L. flower.
Last reviewed: August 2026
🔬 Research Summary
- Anxiety & stress: Human studies, including research from Iran, have investigated orange-blossom preparations for anxiety and psychological outcomes.
- Sleep: Small clinical studies have examined sleep-related outcomes, but the evidence base is limited.
- Blood pressure & cardiovascular outcomes: Some studies have investigated Citrus aurantium preparations in cardiovascular contexts, although flower tea-specific evidence is limited.
- Aromatherapy and essential oil: Orange-blossom aroma and essential oil have been studied separately from oral tea preparations.
- Tea-specific evidence: Direct clinical evidence for drinking orange-blossom infusion remains limited.
The sections below summarize the principal health areas investigated in the literature. Evidence strength is not uniform, and studies using extracts, oils, capsules or combination products are identified conceptually rather than treated as interchangeable with tea.
Anxiety & stress
What researchers found
Human studies, including research from Iran, have investigated orange-blossom preparations for anxiety and psychological outcomes.
What remains uncertain
Study results, doses, preparations and participant populations differ. Where the evidence is based mainly on extracts, oils, capsules, combinations, laboratory models or people with a specific condition, that limitation should be considered when interpreting the findings for a normal cup of tea.
Sleep
What researchers found
Small clinical studies have examined sleep-related outcomes, but the evidence base is limited.
What remains uncertain
Study results, doses, preparations and participant populations differ. Where the evidence is based mainly on extracts, oils, capsules, combinations, laboratory models or people with a specific condition, that limitation should be considered when interpreting the findings for a normal cup of tea.
Blood pressure & cardiovascular outcomes
What researchers found
Some studies have investigated Citrus aurantium preparations in cardiovascular contexts, although flower tea-specific evidence is limited.
What remains uncertain
Study results, doses, preparations and participant populations differ. Where the evidence is based mainly on extracts, oils, capsules, combinations, laboratory models or people with a specific condition, that limitation should be considered when interpreting the findings for a normal cup of tea.
Aromatherapy and essential oil
What researchers found
Orange-blossom aroma and essential oil have been studied separately from oral tea preparations.
What remains uncertain
Study results, doses, preparations and participant populations differ. Where the evidence is based mainly on extracts, oils, capsules, combinations, laboratory models or people with a specific condition, that limitation should be considered when interpreting the findings for a normal cup of tea.
Tea-specific evidence
What researchers found
Direct clinical evidence for drinking orange-blossom infusion remains limited.
What remains uncertain
Study results, doses, preparations and participant populations differ. Where the evidence is based mainly on extracts, oils, capsules, combinations, laboratory models or people with a specific condition, that limitation should be considered when interpreting the findings for a normal cup of tea.
Overall Assessment
Orange blossom has promising preliminary human research, especially around psychological outcomes, but the evidence base is much smaller than for chamomile or lemon balm and preparation differences are important.
References
- Akhlaghi M, Shabanian G, Rafieian-Kopaei M, et al. Citrus aurantium blossom and preoperative anxiety. Rev Bras Anestesiol. 2011;61(6):702-712. PMID: 22063371. doi:10.1016/S0034-7094(11)70079-4.
- Moslemi F, et al. Citrus aurantium Aroma for Anxiety in Patients with Acute Coronary Syndrome: A Double-Blind Placebo-Controlled Trial. J Altern Complement Med. 2019. PMID: 31211612. doi:10.1089/acm.2019.0061.
Reference note: References were selected to represent the principal human clinical and systematic-review evidence discussed in this article. Where direct tea-infusion evidence is limited, the article explicitly identifies that limitation.
Publication version: August 2026
Try it in our ChamoBlossom, a chamomile and orange blossom blend.
These statements have not been evaluated by Medsafe. This tea is not intended to diagnose, treat, cure, or prevent any disease. If you are pregnant, breastfeeding, or managing a health condition, check with your healthcare provider before making it a regular habit.
