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Hibiscus: study protocols

11 study groups say how much Hibiscus participants took a day. These are the doses the studies gave. They are not a recommendation.

Hibiscus: what the research found →

Dose per serving from products

87 products in our catalogue print how much Hibiscus a serving holds.

Most common: 250 mg to 500 mg, 55% of 87 products.

Dose per servingProducts
10 mg or less
3
10 mg to 25 mg
2
25 mg to 50 mg
18
50 mg to 100 mg
2
100 mg to 250 mg
11
250 mg to 500 mg
48
over 500 mg
3

Dose per serving from research

10 study groups in 10 studies say how much Hibiscus participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 100 mg to 250 mg and 250 mg to 500 mg, 30% of 10 study groups each.

Daily doseStudy groups
100 mg to 250 mg
3
250 mg to 500 mg
3
500 mg to 1 g
1
1 g to 2.5 g
1
2.5 g to 5 g
0
5 g to 10 g
2

Commonly used together

3 of 11 study groups took Hibiscus with something else, but nothing that 3 or more different studies gave.

11 study groups

Study
Hibiscus Collagen Alternative (VC-H1) as an Oral Skin Rejuvenating Agent: A 12-Week Pilot Study
2025 · VC-H1 group · Adults aged 35–60 years with dry skin and visible periorbital wrinkles; all participants were Korean.
1.5 g12 weeks50
Differential effects of a combination of Hibiscus sabdariffa and Lippia citriodora polyphenols in overweight/obese subjects: A randomized controlled trial
2019 · LC-HS treatment group · Women aged 36–69 with BMI 24–34 kg/m², classified as overweight or obese and without obesity-related pathology
500 mg8 weeks29
Effectiveness of a polyphenolic extract (Lippia citriodora and Hibiscus sabdariffa) on appetite regulation in overweight and obese grade I population: an 8-week randomized, double-blind, cross-over, placebo-controlled trial
2022 · Lc-Hs (extract) · Overweight and grade I obese adults aged 18–65 years, both sexes, BMI 25–34.9 kg/m², without chronic disease
125 mg60 days33
Clinical effects produced by a standardized herbal medicinal product of Hibiscus sabdariffa on patients with hypertension. A randomized, double-blind, lisinopril-controlled clinical trial
2007 · experimental group (HsHMP) · Men and women aged 25–61 with stage I or II hypertension
250 mg4 weeks100
Effects of aqueous extract of Hibiscus sabdariffa on the renin-angiotensin-aldosterone system of Nigerians with mild to moderate essential hypertension: A comparative study with lisinopril
2015 · Group C · Nigerians aged 31–70 with newly diagnosed, untreated mild to moderate essential hypertension
150 mg/kg4 weeks—
Clinical efficacy of African traditional medicines in hypertension: A randomized controlled trial with Combretum micranthum and Hibiscus sabdariffa
2017 · group 2 · Adults with non-complicated hypertension (>140/90 mm Hg); age and sex not specified
640 mg4 weeks—
Acute Effects of Hibiscus Sabdariffa Calyces on Postprandial Blood Pressure, Vascular Function, Blood Lipids, Biomarkers of Insulin Resistance and Inflammation in Humans
2019 · polyphenol-rich hibiscus drink · Men with a 1–10% estimated 10-year CVD risk
7.5 g1 day—
A Randomized, Double-Blind, Placebo-Controlled Trial to Determine the Effectiveness of a Polyphenolic Extract (Hibiscus sabdariffa and Lippia citriodora) for Reducing Blood Pressure in Prehypertensive and Type 1 Hypertensive Subjects
2021 · HS-LC group · Adults aged 18–65 of both sexes with prehypertension or type 1 hypertension, not receiving pharmacological treatment for hypertension
175 mg12 weeks40
Effectiveness and tolerability of a standardized extract from Hibiscus sabdariffa in patients with mild to moderate hypertension: a controlled and randomized clinical trial
2004 · H. sabdariffa experimental group · Patients aged 30–80 with diagnosed hypertension who had not received antihypertensive treatment for at least 1 month
10 g4 weeks39
The Effect of Green Tea and Sour Tea (Hibiscus sabdariffa L.) Supplementation on Oxidative Stress and Muscle Damage in Athletes
2017 · sour tea extract group · Male soccer players
450 mg6 weeks18
Evaluation of the effects of roselle (Hibiscus sabdariffa L.) on oxidative stress and serum levels of lipids, insulin and hs-CRP in adult patients with metabolic syndrome: a double-blind placebo-controlled clinical trial
2016 · Hibiscus sabdariffa group · Adults with metabolic syndrome
500 mg4 weeks—