Introduction

1. Antihistamine and anti-inflammatory properties were found in ethanolic extract of Ricinus communis root bark.

2. Castor oil is an effective motor lubricant and has been used in internal combustion engines.

3. It is also used extensively as a decorative plant in parks and other public areas, particularly as a "dot plant" in traditional bedding schemes.

4. Ricinus communis is the host plant of the common castor butterfly, the eri silkmoth, and the castor semi-looper moth.

5. Ricinus is extremely allergenic, and has an OPALS allergy scale rating of 10 out of 10.