Effervescent tablets are a dosage form of medication, and the types of effervescent tablets currently developed in China are of two main types: topical and oral, and the usage of each type of medication is different. Topical effervescent tablets are commonly used to treat gynecological inflammation, such as metronidazole vaginal effervescent tablets. The specific usage is to wash the vulva with water or diluted antiseptic lotion, and then insert the effervescent tablet into the vagina as deeply as possible. But be sure to pay more attention to the process of vaginal insertion of the drug should be more gentle, and before using the drug must wash your hands, pay attention to hand hygiene, to avoid cross-infection. Oral effervescent tablets are commonly used to treat colds and infections, such as aspirin effervescent tablets and acetaminophen effervescent tablets. The usage is to take half a cup of cool or warm boiled water, put a dosage of tablets into it, wait for the bubbles to disappear completely, then shake well and take it. It is worth noting that some of the effervescent tablets are strictly limited to the age of the patient, and the use of this type of medication is generally not recommended for infants and young children under the age of 3 months. In addition, due to the large amount of carbon dioxide contained in the effervescent tablets, it should be strictly prohibited to take them orally or inclusively, so as to avoid posing a threat to the patient’s safety. Patients who are in doubt about how to take the medication should consult their doctor or pharmacist before taking it.