Chloraseptic spray is an over-the-counter medicine made of phenol, an oral anesthetic and analgesic. Drugs.com suggests it can be used to treat a sore throat, sore mouth, pain from canker sores and other types of minor mouth irritation. Anesthetics and analgesics together can temporarily block sensations that cause a person to feel pain. As with any medication, Chloraseptic spray has the risk of side effects. When used as directed the side effects are minimal.
According to Drugs.com, the most common side effect of Chloraseptic spray is numbness. This typically affects the cheeks, tongue or the mouth. Although numbness usually is a desired effect of the drug, if it becomes persistent or bothersome the medicine should not be used and a doctor should be consulted.
An allergic reaction is not very likely with use of Chloraseptic, but if it does occur, emergency medical treatment is necessary. Signs of an allergic reaction, as indicated by Drugs.com, include hives, trouble breathing, chest tightening, oral swelling, facial swelling, fever, nausea, shortness of breath and vomiting.
The Kids Health website warns to stop using the medicine if other skin irritation develops. The product can burn the eyes if it comes in contact with them. Chloraseptic.com warns patients to stop using the product if the pain and symptoms don't improve within seven days or seem to get worse.