Botanical Overview
Poison Ivy (Rhus toxicodendron) belongs to the Anacardiaceae family. While not among the most extensively documented medicinal plants, this species has recorded uses that warrant attention from researchers and practitioners. The cashew family (Anacardiaceae) includes trees and shrubs with resinous bark and leaves containing phenolic compounds such as urushiol, which can cause contact dermatitis. The flowers are small and clustered, and the fruits are often drupes with a resinous or oily seed. Many species have traditional uses for their oils and resins.

Family Context
The Anacardiaceae family is primarily tropical and subtropical. Notable medicinal members include:
- Mango — 80 documented uses
- Cashew — 49 documented uses
- Mastic — 43 documented uses
- California Peppertree — 43 documented uses
Geographic Distribution
Poison Ivy has been recorded in , and Norway.
Traditional Uses
Poison Ivy has been traditionally used for immune system support.
Immune system support.
- Cancer
Immune support involves taking the herb as a decoction or tincture over extended periods. The active compounds stimulate immune cell activity and provide antimicrobial protection.
Active Compounds
Phytochemical research has identified 15 compounds in this species, including a diverse array of phytochemical classes (see the Complete Chemical Inventory below for the full list).
The identified compounds include the following categories:
- Tannin: astringent compounds that tighten tissues and resist infection