What Butterfly Pea Flower Is and Why People Use It

Butterfly pea flower is a bright blue flower from a climbing plant native to Southeast Asia, used for centuries in traditional medicine and cooking. The dried flowers brew into a vivid blue tea with a mild, slightly earthy taste—closer to water than to strong herbal teas. People drink it mainly for its anthocyanin content, the same pigment that makes blueberries blue, which research suggests may reduce inflammation and support circulation.

The flower's most striking feature is how it changes color. Add lemon juice or any acidic ingredient to the blue tea and it shifts to purple or pink in seconds—a visual trick that makes it popular in cafes and home kitchens. But the color change is also a sign that the anthocyanins are reacting chemically, which is why some people believe the acidic version may have different effects than the plain brew.

Key Takeaways

  • Butterfly pea flower contains anthocyanins, the anti-inflammatory compounds also found in blueberries, though human studies on the flower itself remain limited.
  • A standard serving is one teaspoon of dried flowers steeped in hot water for 5 to 10 minutes, producing a mild blue tea with no caffeine.
  • The tea shifts from blue to purple or pink when you add lemon juice or other acids, a reaction that does not destroy the active compounds.
  • Butterfly pea flower is generally safe for most people but may interact with blood thinners or diabetes medications, so check with your doctor if you take either.
  • You can buy dried flowers loose or in tea bags from online retailers, specialty tea shops, and some health food stores, usually at $8 to $15 per ounce.

How Anthocyanins Work in the Body

Anthocyanins are water-soluble pigments that act as antioxidants, meaning they neutralize unstable molecules called free radicals that can damage cells and trigger inflammation. When you drink butterfly pea flower tea, these compounds enter your bloodstream and circulate through your body, where they may reduce swelling in blood vessel walls and lower markers of inflammation in the blood.

Most of the research on anthocyanins comes from studies of blueberries, tart cherry juice, and other fruits rather than the flower itself. A 2019 review in Nutrients found that anthocyanin-rich foods consistently lowered inflammatory markers in people with metabolic syndrome, but the butterfly pea flower has not been studied as extensively in humans. Animal studies and test-tube research suggest the flower's anthocyanins work similarly to those in fruit, but human trials specific to the flower are sparse.

The practical takeaway: butterfly pea flower likely offers anti-inflammatory benefits similar to other anthocyanin sources, but you should not expect it to replace medication or produce dramatic results on its own. It works best as part of a broader pattern of anti-inflammatory eating and lifestyle habits.

Preparing and Drinking Butterfly Pea Flower Tea

The simplest method is to steep one teaspoon of dried flowers in eight ounces of hot water (around 160 to 180°F) for 5 to 10 minutes, then strain. The longer you steep, the deeper the blue color and the slightly stronger the taste, though the flavor remains mild even at 10 minutes. You can drink it hot or let it cool and pour it over ice.

To create the color-changing effect, brew the tea as usual, then add a squeeze of fresh lemon juice, lime juice, or a splash of apple cider vinegar. The acid triggers a chemical reaction that shifts the blue to purple, pink, or even gray depending on how much acid you add. This is purely visual—the anthocyanins are still present and active. Some people add the acidic ingredient to enhance the taste rather than for the color shift.

You can also blend dried butterfly pea flowers into smoothies, mix them into honey or syrup, or use them to color and flavor baked goods. When used this way, you consume the whole flower rather than just the steeped liquid, which means you get more fiber and potentially more of the active compounds. One common preparation is to make a butterfly pea flower concentrate by steeping a larger amount of flowers and then using a few tablespoons of the concentrate in drinks or recipes throughout the day.

Where to Buy and What to Look For

Dried butterfly pea flowers are sold online through Amazon, specialty tea retailers like Adagio or The Tao of Tea, and health-focused shops like Mountain Rose Herbs. Prices typically range from $8 to $15 per ounce when bought loose, or $10 to $20 for a box of 20 to 30 tea bags. Loose flowers are usually cheaper per serving and allow you to control the steep time, while tea bags offer convenience and consistent portions.

Look for flowers that are bright blue, not faded or brown, which suggests they were dried and stored properly. Reputable sellers will list the country of origin (usually Thailand, Vietnam, or Indonesia) and whether the flowers were grown organically. If you are buying from a seller you have not used before, check reviews for mentions of color, freshness, and whether the flowers arrived intact rather than as dust.

Store dried flowers in an airtight container away from direct sunlight and heat. They keep for six months to a year if stored properly, though the color and potency fade over time. If your flowers look pale or smell musty, they have likely lost potency and should be replaced.

Who Should Avoid Butterfly Pea Flower

Butterfly pea flower is safe for most people, but it may interact with certain medications. If you take blood thinners like warfarin (Coumadin) or dabigatran (Pradaxa), check with your doctor before adding butterfly pea flower to your routine, because anthocyanins may have mild blood-thinning effects and could amplify the medication's action. The same caution applies if you take diabetes medications—some research suggests anthocyanins may lower blood sugar, which could cause your levels to drop too far if combined with medication.

Pregnant and nursing people should also consult their doctor before drinking the tea regularly, as safety data in these populations is limited. People with a known allergy to plants in the legume family (peas, beans, peanuts) should be cautious, though true allergies to butterfly pea flower are rare. If you experience any unusual symptoms after drinking the tea—headache, dizziness, stomach upset—stop and talk to your doctor.

Realistic Expectations for Anti-Inflammatory Effects

Butterfly pea flower is not a treatment for inflammatory conditions like arthritis, inflammatory bowel disease, or autoimmune disorders. It is a food with compounds that may support your body's natural anti-inflammatory processes when consumed regularly as part of a broader wellness routine. Think of it the way you would think of blueberries or green tea—a small positive input that adds up over time, not a standalone solution.

If you are drinking it for anti-inflammatory reasons, consistency matters more than dose. A cup of butterfly pea flower tea once a week will likely have minimal effect. Daily or near-daily consumption over weeks or months is more likely to produce measurable changes in how you feel, though individual results vary widely. Some people notice improved energy or clearer skin within a few weeks; others see no obvious change but continue drinking it because they enjoy the taste and the ritual.

The best way to assess whether it works for you is to drink it daily for four to six weeks and track any changes in energy, joint comfort, digestion, or skin clarity in a straightforward note or journal. If you notice improvement, continue. If not, you have not lost much—a cup of butterfly pea flower tea costs less than a dollar and tastes pleasant enough to drink for the experience alone.

Combining Butterfly Pea Flower with Other Anti-Inflammatory Foods

Butterfly pea flower works best as part of a pattern rather than in isolation. Pair it with other anthocyanin sources like blueberries, blackberries, or tart cherry juice; with omega-3 rich foods like fatty fish or flaxseeds; and with spices like turmeric and ginger, which have their own anti-inflammatory compounds. A straightforward routine might be butterfly pea flower tea in the morning, a blueberry snack in the afternoon, and a turmeric-ginger tea in the evening.

You can also brew butterfly pea flower with other herbs. Steep it alongside ginger slices, a cinnamon stick, or dried hibiscus flowers to layer flavors and combine their anti-inflammatory effects. Some people make a cold brew by steeping the flowers overnight in room-temperature water, which produces a gentler, slightly sweeter tea that many find easier to drink in larger quantities.

Frequently Asked Questions

Does butterfly pea flower have caffeine?

No. Butterfly pea flower contains no caffeine, so you can drink it anytime of day without affecting sleep. This makes it a good choice for people who want an herbal tea in the evening or who are sensitive to caffeine.

Will the color-changing effect fade if I add lemon juice right away?

No. The color shift happens when ready when acid meets the tea, and the anthocyanins remain active. You can add lemon juice when ready or wait—the compounds do not degrade from the color change itself. The shift is purely a visual reaction.

Can I reuse the dried flowers after steeping?

Yes. You can steep the same flowers a second or even third time, though the color and flavor will be weaker each time. Some people steep once for a strong tea and then reuse the flowers for a milder second cup later in the day.

How much butterfly pea flower should I drink per day?

One to two cups per day is a common amount and is considered safe for most people. There is no official recommended dose, so start with one cup daily and adjust based on how you feel and whether you notice any effects over several weeks.

Is butterfly pea flower the same as blue spirulina?

No. Blue spirulina is a cyanobacteria (a type of algae) with a different nutrient profile and stronger taste. Butterfly pea flower is a plant flower with a mild flavor. They are not interchangeable, though both contain beneficial compounds.