Raspberry Leaf
Also known as: Red Raspberry Leaf, Rubus idaeus, Raspberry Leaf Tea, RLT, RRL
Effective Dosage
No established dose
What the Science Says
Raspberry leaf comes from the Rubus idaeus plant and has been used traditionally, especially during pregnancy, with the belief it shortens labor and eases delivery. Lab studies show it contains polyphenols with antioxidant properties, and one small observational study found an association between its use and lower rates of labor augmentation — though this cannot be taken as proof of benefit. A topical serum combining raspberry leaf cell culture extract with vitamins C and E showed skin improvements in a small trial, but the raspberry leaf contribution cannot be isolated from the other ingredients.
What It Doesn't Do
Does not have proven benefits for labor or birth outcomes — no randomized controlled trial has confirmed this. Not a proven detox agent — a multi-ingredient detox supplement containing raspberry leaf showed no improvements in body composition, gut symptoms, or blood markers. Not proven to shorten labor. Not a safe assumption during pregnancy just because it's 'natural.'
Evidence-Based Benefits
Raspberry leaf is traditionally used for its potential benefits in women's health, particularly during pregnancy and menstrual cycles. Some studies suggest it may help tone the uterus and reduce labor duration, although more robust clinical evidence is needed.
Moderate EvidenceEffective at: No established dose
Source: auto-research
Absorption & Bioavailability
Unknown — no pharmacokinetic data provided in the available studies
Red Flags to Watch For
- One systematic review found oral raspberry leaf use was associated with a significantly higher rate of cesarean delivery (adjusted odds ratio 3.47)
- A case report documented hypoglycemia in a pregnant woman with gestational diabetes after consuming raspberry leaf tea — women with GDM should avoid it or monitor glucose closely
- A reported toxic effect during pregnancy was flagged in a 2023 case report, though no abstract was available
- Lab studies on endothelial cells found raspberry leaf extract increased ICAM-1 expression, a marker of inflammation — potential unfavorable cardiovascular effect in vitro
- 38% of surveyed pregnant women used it despite no scientific evidence of efficacy — widespread use does not equal safety or effectiveness
- No randomized controlled trials exist to confirm benefits or establish safe dosing in pregnancy
Products Containing Raspberry Leaf
See how Raspberry Leaf is used in these analyzed products:
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-06