In randomized trials, hibiscus (sour tea) produced small but real drops in blood pressure. This tart, caffeine-free cooler pairs it with pomegranate and ginger.

Of all the herbal drinks studied for blood pressure, hibiscus (also called sour tea or Hibiscus sabdariffa) has some of the best evidence. In a placebo-controlled trial, drinking hibiscus tea for six weeks lowered systolic blood pressure by about 7 mmHg in adults with pre- or mild hypertension, and a meta-analysis of randomized trials found consistent, if modest, reductions.
It is caffeine-free, a beautiful deep red, and pleasantly tart. Here it is paired with pomegranate — whose polyphenols have also been linked to small blood-pressure reductions — plus a little ginger for warmth.

Keep it unsweetened or barely sweetened — added sugar works against your blood-pressure goal. Hibiscus can add to the effect of blood-pressure medication and may interact with a few drugs, so if you are being treated for hypertension, enjoy it as a habit alongside your care and mention it to your clinician.
Calculated for one serving from USDA FoodData Central values for the ingredients above, counting only the strained liquid you actually drink. An estimate, not a lab analysis.
How this was calculated. Each ingredient was converted to grams, matched to a food in USDA FoodData Central (SR Legacy, April 2018), summed, and divided by 4 servings. Solids that are steeped and then strained out are excluded — only what ends up in the glass is counted. Cooking losses, draining and the real size of a handful all move these numbers, so treat them as a good estimate rather than a measurement. Added sugars count honey, maple syrup and table sugar only; sugar from whole fruit is not an added sugar.
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Primary sources for the claims above. Effects reported in these papers describe the compound or the dietary pattern studied — not this specific dish.
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