Pyri communis folium

Pyri communis folium, also known as pear leaves, is a drug found in herbal medicines and is used to treat inflammatory diseases of the urinary tract.

Pyri communis folium contains 2 to 5 % arbutin, up to 8 % lamiaceous tanning agents (including chlorogenic acid and rosemary acid) and phloretin.

Pear leaves have a urinary tract disinfecting effect (effect of arbutin), a weakly astringent (lamiaceous tanning agents) and slightly antibacterial (phloretin). The interaction of the ingredients disinfects the urinary tract and reduces inflammation.

Pyri communis folium are used for inflammatory diseases of the urinary tract.

Pyri communis folium can be used as a tea infusion or by boiling tea several times a day with 1 tablespoon of cut drug to a cup of water.

There are no known adverse effects.

1. Liang K et al (2016) Arbutin encapsulated micelles improved transdermal delivery and suppression of cellular melanin production. BMC Res Notes 9:254.
2. Morag M et al (2015) A double-blind, placebo-controlled randomized trial of Serratulae quinquefoliae folium, a new source of β-arbutin, in selected skin hyperpigmentations. J Cosmet Dermatol 14:185-190.
3. Numata T et al(2016) Contact dermatitis caused by arbutin contained in skin-whitening cosmetics. Contact dermatitis 75:187-188.