Cardamom Side Effects: Dangers and Contraindications
Cardamom, the queen of digestive spices, has also shown a measurable effect on blood pressure in a clinical trial — good news that still calls for some caution if you are on ongoing treatment.
Does cardamom cause side effects? At culinary doses, it is one of the best-tolerated spices in the Ayurvedic pharmacopoeia. The best-documented point of caution concerns its effect on blood pressure, shown by a clinical trial in hypertensive patients — an overall favorable effect, but one that calls for caution if you are already on antihypertensive treatment.
For cardamom's uses, see our page cardamom; general precautions are covered in cardamom dangers.
What the reference clinical trial shows
The most cited study on this topic is by Verma, Jain, and Katewa, published in 2009 in the Indian Journal of Biochemistry & Biophysics. It followed 20 newly diagnosed stage-1 hypertensive patients, given 3 g of cinnamon/">cardamom powder per day in two doses for 12 weeks, with blood pressure measured at regular intervals (see the study on Google Scholar). Result: a significant drop in systolic, diastolic, and mean blood pressure by the end of the study, along with increased fibrinolytic activity (the blood's ability to dissolve clots).
An important limitation to know
This trial had no placebo group: all participants received cardamom, which limits the strength of the scientific evidence (it is impossible to fully rule out an effect from monitoring or other lifestyle changes over the period). This does not invalidate the result, but invites viewing it as promising rather than definitively established. Other, more recent controlled trials have since confirmed a similar trend in diabetic or overweight populations.
What this means in practice
| Situation | What to do |
|---|---|
| Normal blood pressure, cardamom used in everyday cooking | No particular precaution |
| Ongoing antihypertensive treatment | Blood pressure monitoring recommended during a therapeutic-dose cardamom course (beyond culinary use), to avoid a cumulative effect |
| Low blood pressure or tendency to faint | Caution, watch for possible signs of blood pressure dropping too low (dizziness, weakness) |
Other precautions
- Gallstones: cardamom may stimulate bile secretion; caution with a history of gallstones, medical advice recommended.
- Pregnancy and breastfeeding: everyday culinary use raises no identified issue; therapeutic-dose courses should be discussed with a doctor (see cardamom and pregnancy).
- Individual digestive sensitivity: rare cases of discomfort or mild allergic reaction have been reported, generally minor.
Anyone on treatment for high blood pressure should mention a therapeutic-dose cardamom course to their doctor. See also our guide to Ayurveda and hypertension and our safety and precautions guide.
Your questions about cardamom side effects
Does cardamom really lower blood pressure?
A clinical trial in hypertensive patients showed a significant blood pressure drop after 12 weeks of taking 3 g of powder per day. The trial had no placebo group, however, which limits the strength of the evidence, even though the result is consistent with other studies.
Should you stop antihypertensive treatment if you take cardamom?
No, never without medical advice. The potentially cumulative effect calls for blood pressure monitoring instead, not stopping a prescribed treatment.
Does cardamom in cooking pose a blood pressure risk?
No, the documented effect concerns a therapeutic dose of 3 g per day, far above ordinary culinary use in small amounts.
Is cardamom discouraged with gallstones?
As a precaution, yes: it may stimulate bile secretion. Medical advice is recommended with a history of gallstones before a therapeutic-dose course.
Can cardamom cause blood pressure to drop too low?
This is a theoretical risk when combined with antihypertensive treatment or a personal tendency toward low blood pressure; watch for any dizziness or weakness during a course.
Can a pregnant woman consume cardamom?
Everyday culinary use raises no identified issue. A therapeutic-dose course should be discussed with a doctor as a precaution.
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