Health Risks of Consuming Butterfly Pea Flower: What You Need to Know - Family Medicine

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Hello, it has recently been stated that butterfly pea flowers are not suitable for consumption, but my family members have been eating the flowers and drinking them for 3-4 months.
I would like to ask what effects "consuming butterfly pea flowers" might have? Since they have consumed dozens of flowers at a time, it adds up to hundreds over the months.
Should we go to the hospital for a check-up? Thank you.

Joyce, 20~29 year old female. Ask Date: 2019/05/12

Dr. Liao Yaopan reply Family Medicine


Hello, there is currently no evidence-based conclusion regarding the relevant information.
Clinically, there are no tests for this component, and it is still recommended to use caution in its application without sufficient food safety assessments.
Online consultations are not equivalent to medical visits and cannot provide diagnoses or treatment recommendations.
Changhua Hospital cares about you.

Reply Date: 2019/05/12

More Info


The consumption of butterfly pea flower (Clitoria ternatea) has gained popularity due to its vibrant blue color and potential health benefits. However, recent discussions have raised concerns about its safety for consumption, particularly when consumed in large quantities over an extended period.
Butterfly pea flower is often used in teas, cocktails, and various culinary dishes, and it is known for its antioxidant properties, attributed to the presence of anthocyanins. These compounds are believed to provide various health benefits, including anti-inflammatory and anti-cancer effects. However, the safety of consuming butterfly pea flower in significant amounts has not been thoroughly studied, and there is limited scientific evidence regarding its long-term effects.

In your case, having consumed butterfly pea flowers regularly for several months raises valid concerns. While there is no definitive evidence suggesting that butterfly pea flower is harmful when consumed in moderation, the lack of comprehensive research means that potential risks cannot be entirely ruled out. Some individuals may experience allergic reactions or gastrointestinal discomfort, particularly if they have sensitivities to certain plants or flowers.

Regarding your question about whether you should seek medical attention, it largely depends on whether you are experiencing any adverse symptoms. If you have been consuming butterfly pea flower without any noticeable side effects, it is likely that you are tolerating it well. However, if you begin to experience symptoms such as nausea, vomiting, diarrhea, or any allergic reactions (such as hives or difficulty breathing), it would be prudent to consult a healthcare professional.

In terms of health monitoring, if you have consumed a significant quantity of butterfly pea flower and are concerned about potential toxicity or adverse effects, it may be wise to schedule a check-up with your healthcare provider. They can perform a thorough evaluation and may recommend blood tests or other assessments to ensure that your overall health is not compromised.

Additionally, it is essential to consider the source of the butterfly pea flowers you have been consuming. If they were sourced from reputable suppliers and prepared hygienically, the risk of contamination or exposure to harmful substances is lower. However, if there is any doubt about the quality or safety of the flowers, it would be best to avoid further consumption until you can confirm their safety.

In summary, while butterfly pea flower is generally considered safe for consumption in moderate amounts, the long-term effects of consuming it in large quantities are not well understood. If you have been consuming it regularly without any adverse effects, you may not need to worry excessively. However, if you have concerns or experience any symptoms, seeking medical advice is a sensible course of action. Always prioritize food safety and consult with healthcare professionals regarding any dietary changes or concerns.

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