Quince Leaf
Cydonia oblonga
T Traditional useQuince leaf decoction is a folk remedy for cough, diarrhea and stomach cramps; there are no human studies. Do not chew the seeds of the fruit.
Quince LeafOn this page
At a glance
Quince leaf tea is a folk drink made by boiling the leaves. According to reviews, the leaf decoction has traditionally been used for cough, diarrhea, stomach cramps, nervousness and insomnia. No human study has used the leaves; effects such as lower blood sugar were seen only in animal experiments.
Updated: October 24, 2026
Sources and research limitations appear below. The existence of a source does not mean every use has been clinically verified.
What is it used for?
T Traditional use
Traditional use: Documents traditional use, not clinical efficacy or safety for everyone.
How do we rate evidence levels? →A leaf decoction has traditionally been used as a folk remedy for cough; there are no human studies for this use. [1]
T Traditional use
Traditional use: Documents traditional use, not clinical efficacy or safety for everyone.
How do we rate evidence levels? →A leaf decoction has traditionally been used for diarrhea and stomach cramps; there is no clinical evidence. [1]
How is it used?
Tea
Traditionally, the leaves are boiled in water (decoction) and drunk. The sources give no verified amount or duration.
[1]Safety & interactions
- There are no safety data for the leaf; ask your doctor before use in pregnancy, breastfeeding or children.
- Quince seeds eaten in large amounts can be toxic because of nitrile compounds; do not chew the seeds.
- If you take diabetes medicine, ask your doctor; leaf extract lowered blood sugar in animal experiments.
- See a doctor for diarrhea with fever or blood or lasting more than three days, and for a cough lasting more than a week.
Drug interactions
No recorded interactions
Side effects
- No systematic side-effect data exist for the leaf
⚕ When to see a doctor
- If high fever, shortness of breath or purulent/bloody phlegm develops
- If symptoms do not improve within 1–2 weeks or worsen
- If severe abdominal pain, jaundice, rash or allergic reaction occurs
Frequently asked questions
What is quince leaf tea good for?
According to reviews, it has been used in folk medicine for cough, diarrhea, stomach cramps, nervousness and insomnia. There are no human studies for these uses.
Does quince leaf lower blood sugar?
Leaf extract lowered blood sugar in diabetic rats; no such study exists in people. If you take diabetes medicine, ask your doctor.
Can I drink quince leaf tea while pregnant?
There are no safety data for the leaf. Ask your doctor before use in pregnancy or breastfeeding.
How is quince leaf tea made?
Traditionally, the leaves are boiled in water. The sources give no verified amount; do not use it for long periods.
Sources
Source type is not an efficacy rating. A monograph may document traditional use or safety. Claim numbers link to the relevant source; the access date does not indicate professional approval.
- Cydonia oblonga M., A Medicinal Plant Rich in Phytonutrients for PharmaceuticalsFrontiers in Pharmacology · 2016 · ReviewSource accessed:
Cite This Page
Quince Leaf (Cydonia oblonga). Herbadex — Doğal Şifa Rehberi (2026). https://herbadex.com/en/herb/quince-leaf/
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