Rose Side Effects: Dangers and Contraindications

Does rose cause side effects? As rose water or gulkand, very rarely — we detailed these occasional cases in our article rose dangers. As essential oil, however, a clinical study measured a real, measurable effect on the body: a drop in alertness and systolic blood pressure after inhalation. This is an effect sought after in relaxing aromatherapy, but it becomes a point of caution as soon as it combines with a sedative, a blood-pressure treatment, or driving.

This article focuses on what the scientific literature precisely documents, alongside our already-published fact sheets rose reviews and rose dosage.

Rose water and gulkand: rare, already-known side effects

As a reminder, traditional use of rose water (hydrosol) on skin or as a petal tea is only associated with very rare skin irritation, most often linked to a product containing synthetic fragrances rather than to the rose itself, and gulkand mainly raises the question of its sugar content. These points are detailed in our article rose dangers; they are not repeated in detail here, where the focus is on a lesser-known side effect: that of inhaled essential oil.

Rose essential oil: a sedative and hypotensive effect measured by a study

A study published in 2009 in the journal Natural Product Communications by Thai researcher Tapanee Hongratanaworakit assessed, in healthy volunteers, the effect of inhaling rose essential oil (Rosa damascena) compared with a placebo. Participants exposed to rose oil showed, compared with the placebo group, a decrease in respiratory rate, blood oxygen saturation and systolic blood pressure — physiological signs consistent with reduced autonomic nervous system arousal. Subjectively, the same participants reported feeling calmer, more relaxed and less alert than the placebo group (see the study on Google Scholar).

This is precisely the effect sought in relaxing aromatherapy: nothing alarming in itself for a healthy person diffusing or breathing rose oil on a tired evening. But "less alert" and "lower blood pressure" are also, by definition, side effects to anticipate in certain specific situations — before driving, with already-low blood pressure, or combined with a treatment acting in the same direction.

Who should take this effect into account?

Situation	What the study shows	What to do
Driving or a task requiring alertness	Measured drop in alertness after inhalation	Avoid rose essential oil just before driving or operating machinery
Already-low blood pressure	Drop in systolic blood pressure observed in healthy subjects	Caution, medical advice if known hypotension
Ongoing antihypertensive treatment	Plausible additive effect, not specifically studied	Report regular rose oil use to your doctor or pharmacist
Taking sedatives, sleeping pills or alcohol	Calming effect that may add up	Avoid the combination, especially before driving

These results concern inhaled essential oil, a concentrated form. They do not imply that rose water or gulkand have a comparable effect: their content of active aromatic compounds is far lower than that of a pure essential oil.

Identified allergens: geraniol and citronellol

The other documented side effect of rose, mainly with essential oil or concentrated cosmetic products, is allergic contact dermatitis. Dermatology literature identifies two aromatic compounds naturally present in rose oil, geraniol and citronellol, as recognized contact allergens in people sensitized to fragrances. Typical signs are redness, itching or a localized rash at the contact site, which generally resolve once exposure stops. A patch test in the crook of the elbow before any extensive skin use, particularly for pure or diluted essential oil, remains the simplest precaution.

Pregnancy, breastfeeding and essential oil

Given its concentration and demonstrated effect on blood pressure and alertness, rose essential oil should be avoided as a precaution during pregnancy and breastfeeding, whether taken internally or diffused for extended periods — a rule applicable to most concentrated essential oils. Rose water and gulkand, in everyday use, are not affected by this restriction. Our article rose and pregnancy details this distinction form by form.

General precautions

• Alertness and driving: avoid inhaling rose essential oil before driving or operating machinery, because of its documented effect on alertness.
• Blood pressure: caution with known hypotension or antihypertensive treatment; talk to your doctor about regular use.
• Sedatives and alcohol: the essential oil's calming effect can add to that of these substances.
• Skin: patch-test any rose essential oil or concentrated cosmetic in the crook of the elbow before extensive use, because of geraniol and citronellol.
• Pregnancy and breastfeeding: essential oil to avoid as a precaution; rose water and gulkand in everyday use stay free of identified issues.

Rose never replaces medical treatment and claims to cure no condition. If in doubt, particularly about a drug interaction, ask a healthcare professional for advice. General safety guidelines applicable to Ayurvedic herbs and essential oils are detailed in our safety and precautions guide.

Key takeaways

Rose water and gulkand remain among the safest uses in the Ayurvedic pharmacopeia. Rose essential oil, on the other hand, has a real, measured effect on alertness and blood pressure: an asset for evening relaxation, a point of caution before driving, with hypotension, or combined with a sedative or antihypertensive treatment.