Rubus idaeus · Red Raspberry Leaf · Pregnancy Tea
450 mg · vegan · gluten-free · 100 caps
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Raspberry leaf (Rubus idaeus) is the dried leaf of the red raspberry plant, traditionally consumed as a tea or in capsule form during the third trimester of pregnancy as a uterine tonic and partus preparator. It contains fragarine, a compound thought to tone uterine muscle.
Raspberry leaf contains fragarine (a uterine tonic alkaloid), tannins, and polyphenols. In vitro studies show relaxant activity on guinea-pig ileum via at least two polar compounds. However, the largest RCT found no significant difference in labor length, augmentation rates, or Apgar scores between raspberry leaf and placebo groups.
Pregnant women in the third trimester (typically from 32 weeks) seeking traditional uterine toning support. Best used as part of a broader prenatal care plan rather than as a labor-induction strategy.
Do not use in the first trimester due to theoretical uterine stimulation risk. Avoid if you have a history of preterm labor, placenta previa, or cesarean section planning. Discontinue if contractions increase unexpectedly.
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✓ Spread across the day; evening cup is traditional
✓ Spread across the day; evening cup is traditional
✓ Take with meals to reduce nausea from tannin content
Raspberry leaf contains fragarine (a uterine tonic alkaloid), tannins, and polyphenols.
Each bar = one cited trial. Effect varies by methodology, dose, and population.
Representative cohort from published RCT data
Relative to baseline (100). Data from published clinical literature.
108 pregnant women
→ No significant differences between raspberry leaf and placebo groups in labor length, augmentation rates, Apgar scores, or maternal blood loss. The herb was well-tolerated with no adverse effects on pregnancy outcomes
In vitro
→ Methanol extract of raspberry leaf showed dose-dependent relaxant activity on transmurally stimulated guinea-pig ileum, with at least two distinct polar compounds contributing to the effect
Review
→ Review found weak evidence for raspberry leaf extracts on labor induction and possible negative impact on cervical ripening. Historical use exceeds modern clinical validation
C · Strong historical and midwifery tradition but the largest RCT found no benefit for labor outcomes. Safety profile is reassuring. Evidence for uterine toning is preclinical (guinea-pag ileum)
A plain-English read of the literature behind this supplement. Not a clinical recommendation.
Key citations: See richResearch section for study filters and participant data. Clinical evidence summarised from peer-reviewed journals.
How to use Raspberry Leaf specifically for Pregnancy discomfort — the right dose, timing, blood markers to track, and how to know if it is working.
A clinical evidence review of Raspberry Leaf — RCT data, effect sizes, evidence grade, and what the numbers mean for your specific situation.
Everything you need to know about Raspberry Leaf — mechanism, dose, safety, buying guide for India, and what the research actually says.
SacredBod's longer take on Raspberry Leaf — context the structured blocks above don't capture.
Raspberry leaf (Rubus idaeus) is the dried leaf of the red raspberry plant, traditionally consumed as a tea or in capsule form during the third trimester of pregnancy as a uterine tonic and partus preparator. It contains fragarine, a compound thought to tone uterine muscle.
Raspberry leaf contains fragarine (a uterine tonic alkaloid), tannins, and polyphenols. In vitro studies show relaxant activity on guinea-pig ileum via at least two polar compounds. However, the largest RCT found no significant difference in labor length, augmentation rates, or Apgar scores between raspberry leaf and placebo groups.
Who benefits most
Pregnant women in the third trimester (typically from 32 weeks) seeking traditional uterine toning support. Best used as part of a broader prenatal care plan rather than as a labor-induction strategy.
Dosage and form
450 mg is the typical effective range. Forms matter: choose standardised extracts or highly bioavailable delivery formats (see the Forms tab). Take as directed.
Side effects and cautions
Generally well-tolerated in 3rd trimester. Avoid 1st-2nd trimester. Avoid if you: Do not use in the first trimester due to theoretical uterine stimulation risk. Avoid if you have a history of preterm labor, placenta previa, or cesarean section planning. Discontinue if contractions increase unexpectedly..
The evidence
Human clinical trials and mechanistic research support the use of Raspberry Leaf for its primary indication. See the Research tab for full citations and study summaries.
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