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Herbal & Flower Teas

Sea Polygonatum Pearl Oyster Shell Goji Chrysanthemum Tea

traditionally used to nourish yin, support eye health, and ease symptoms associated with cataract and diabetes

In short: Sea Polygonatum Pearl Oyster Shell Goji Chrysanthemum Tea is a herbal & flower tea that traditionally used to nourish yin, support eye health, and ease symptoms associated with cataract and diabetes. It is most often made for blood sugar balance, eye wellness, everyday balance. Total time about 40 min. Key ingredients: goji berries, chrysanthemum.

By · Published under our editorial policy · Research library

Prep
10 min
Cook
30 min
Total
40 min
Makes
2 cups
Blood Sugar BalanceEye WellnessEveryday Balance
Sea Polygonatum Pearl Oyster Shell Goji Chrysanthemum Tea

Why people make this tea

Cataracts tend to develop gradually, and in the period before surgery — or for those managing the early stages — many people in the Cantonese tradition turn to food therapy as a way to nourish the eyes and support overall vitality. This four-ingredient tea was designed with exactly that in mind: sea polygonatum to moisten and nourish, pearl oyster shell for its traditionally calming and liver-supporting properties, and the classic pairing of goji and chrysanthemum, which is one of the best-known eye-support combinations in Chinese herbal cooking.

The tea is also a practical choice for people with diabetes, who may have eye-related concerns associated with that condition.

What studies say about the key ingredients

Traditional use is not the same as clinical proof. Here is the strongest human research we found for each ingredient, limitations included.

  • Goji berries · Meta-analysis, 161 participants · 2012
    Compared with placebo (n=80), the goji juice group (n=81) reported greater improvements in several self-rated symptoms, including stress, mental acuity, sleep quality and overall well-being, under a random effects model.Limitation: Outcomes were self-reported symptom questionnaires, and several symptoms showed significant heterogeneity across the four pooled trials of a single branded juice.PubMed 22897500 · 3 more goji berries studies
  • Chrysanthemum · Randomized controlled trial, 37 participants · 2023
    Compared with the high-fat meal alone, the extract group had lower postprandial glucose at 1 hour and higher antioxidant markers (T-AOC, SOD, GSH), with lower MDA. Incremental area under the curve did not differ significantly between groups.Limitation: Small sample of healthy young adults given a single high-fat meal, so longer-term effects and effects in people with metabolic conditions are unknown.PubMed 36677639 · 1 more chrysanthemum study

From the Nourilo Research Library. Findings come from specific doses, extracts and populations and may not apply to a home-cooked recipe.

Safety first — read before you cook

This is a traditional food, not a treatment. Please check with your doctor or pharmacist before making it a regular part of your diet if you:

  • are pregnant or breastfeeding, or are cooking for a young child;
  • take regular medicines — especially blood thinners, blood-pressure, diabetes or immune-suppressing drugs;
  • have a kidney, liver or heart condition, or a known food allergy.

Ingredient notes for this recipe

  • Goji berries: A few cases of raised INR (a bleeding-risk marker) have been reported in people taking warfarin after drinking concentrated goji tea or wine. If you take a blood thinner, check with your doctor. Source: Memorial Sloan Kettering — Lycium

Stop eating it and seek advice if you notice an allergic reaction or feel unwell. Safety notes reviewed 8 October 2026 · How we write safety notes

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