Highlights
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H. sabdariffa has a wide range of traditional and potential new health food uses.
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The evidence is largely based on in vitro and in vivo studies of varying quality.
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A better chemical profiling of the extracts studied pharmacologically is essential.
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Further research with Hibiscus species on possible gynaecologic uses is warranted.
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Hs preparations, esp. Hs tea and aqueous extracts are safe for use in foods.