Can cat's eye herb treat chronic pharyngitis?

Euphorbia lunulata can be used to treat chronic pharyngitis, with anti-inflammatory and cough-suppressing effects. It is commonly used for relieving cough and also has expectorant properties. However, Euphorbia lunulata is a toxic herb and should not be taken in excess. Overdose may cause symptoms such as oral numbness, nausea, vomiting, and dizziness, especially when taken on a full stomach. Patients are advised to use this herb only under the guidance of a physician.