Castor
(Ricinus communis)
Also know as Palma christi
Botanical Information
A small tree with red bark and palmately compound leaves in the spurge family. The mottled beans are enclosed in spiny pods.
Working with Castor
Part(s) Used
Processed Oil
Herb Forms
Oil.
Christopher Hobbs:
“Castor oil is a well-known cleansing laxative and purgative. It is sometimes used to treat food poisoning. Externally it is used for warts, appendicitis, fibroid cysts, sore, abscesses, and neuralgia–as a castor oil pack.
CASTOR OIL PACK
Soak a flannel or other absorbent cloth that is folded for extra thickness in a good quality castor oil until saturated. Place the soaked cloth in a glass casserole dish and warm in the oven at about 350 deg. until nice and hot, but not scalding. Place over the affected area (pelvis, breast, etc.), cover with a plastic bag (to keep it from leaking oil), a small towel, and hot water bottle or heating pad to keep it warm. Keep in place for about 45 minutes. It is best to do a castor oil pack at least 5 days a week, usually in the evening, or other times it is convenient. The castor oil has active constituents called lectins that are absorbed into a local area and call forth and activate the immune system to help remove tumors, cysts, and promote healing. Edgar Cayce writes extensively about the healing powers of castor oil.
In Chinese medicine, castor oil is used for inflammation, to remove toxins, and to moisten the intestines.
Castor has a taste of BITTER, SWEET and a temperature of NEUTRAL.”
Historical Uses
Castor oil, derived from the seeds of Ricinus communis, has been used for centuries in traditional medicine, especially in ancient Egypt, India, and China. Historically, it was utilized as a laxative, a remedy for skin conditions, a lubricant, and even a labor inducer.
Modern Clinical Uses
Today, herbalists and naturopaths primarily recommend castor oil for digestive health (as a laxative), skin issues (such as dermatitis and acne), and hair growth. It’s also applied topically for joint pain, inflammation, and promoting wound healing. The oil’s main component, ricinoleic acid, is thought to account for its analgesic and anti-inflammatory effects.
Chemistry and Pharmacology
Castor oil is mostly composed of triglycerides of ricinoleic acid, which is unique to this oil and provides its strong laxative effects by activating EP3 prostanoid receptors in the intestines, increasing peristalsis. Castor oil also has antimicrobial, anti-inflammatory, and emollient properties, contributing to its diverse therapeutic applications.
Clinical Trials
Limited clinical trials support the benefits of castor oil. Studies show its effectiveness in reducing constipation and, in some cases, improving wound healing. Research also suggests castor oil packs may alleviate menstrual pain and promote wound healing, though more comprehensive studies are needed.
Summary
Castor oil remains a versatile natural remedy with a mix of anecdotal and emerging clinical support, particularly for digestive health, skin conditions, and mild pain relief. Despite limited trials, it holds a valued place in herbal and naturopathic practices.
Generated by ChatGPT; edited by Christopher Hobbs.
Cautions
Avoid large doses. Not for long-term use. Contraindicated in pregnancy, intestinal obstruction, and abdominal pain.
Allergic reactions are rare but possible.
Conditions treated with Castor
Condition
Treatment Support
Application
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Condition
Treatment Support
immune stimulant
Application
oil packs externally
Dosages
Oil
15-60 ml as a laxative; 1-5 ml for milder digestive support
The information given here is designed to help you make informed choices about your health. The information is drawn from numerous sources—both traditional medicine practice, from the clinical experience of many herbalists currently practicing, and supported by decades of scientific research from the author. The research most consulted includes human clinical trials that help to determine the most effective and safe herbs for various needs, the best doses, and types of preparations.
The information offered in this database is not intended as a substitute for any that may have been prescribed by your health practitioner or physician.