Karvol Clear Nasal Spray is an allopathic medicine Secondary and off-label uses of Karvol Clear Nasal Spray have also been mentioned below. The key ingredients of Karvol Clear Nasal Spray are sodium chloride. The correct dosage of Karvol Clear Nasal Spray depends on the patient's age, gender, and medical history. This information has been provided in detail in the dosage section.