What are the letters on the Anainjing tablet?

The letters on metamizole tablets are usually "AC," though the specific letter may vary depending on the manufacturer. Details are as follows:

Metamizole tablets are antipyretic and analgesic medications. They are used to reduce fever in cases of acute high temperature, and may also be used short-term for the treatment of acute pain, such as headache, migraine, muscle pain, joint pain, and dysmenorrhea. These tablets are generally white or nearly white and round, commonly imprinted with the letters "AC." However, a small number of manufacturers may use different markings. Patients are advised to identify the medication by its outer packaging to avoid taking the wrong drug. It should be noted that this medication is generally not a first-line treatment and should only be used short-term when the condition is severe or urgent and no other effective treatments are available.

Patients are advised to use this medication under the guidance of a physician. If any adverse reactions occur, they should seek medical attention promptly and receive standardized treatment under medical supervision, which helps promote recovery.