... oral and intravenous administration of water-insoluble compounds Uses in Medicinal Science: From centuries, castor oil has been ... treating constipation. Application of the castor oil is also beneficial in cases of ringworm, keratoses, skin inflammation, abrasions, fungal ... of wounds, pustules, pimples, or haemorrhoids) It is helpful in case of arthritis and back pain Application of castor oil to ...