What do first-line medication and second-line medication mean?

First-line drugs refer to drugs that can be given priority or standard use according to the patient's condition. After these first-line drugs are resistant, choose second-line drugs.

Second-line drugs refer to drugs that are not used as frequently as first-line drugs or have no obvious effect and many adverse reactions. Second-line drugs mainly choose retreatment cases resistant to first-line drugs.

Extended data:

The classification of first-line drugs and second-line drugs is not a problem of completely controlling drug resistance. There are many factors in this, and often when new drugs come up, most of them are placed in the second line. For example, this drug is very good, but at first, first-line drug treatment was chosen. If the effect is not good, the second-line drug has achieved good results, and the first-line drug will also be used.

Generally speaking, drugs have an approval process. When drugs are approved, they are usually used as second-line drugs when they are first listed. When purchasing and paying, there should be a basis for the ineffectiveness or intolerance of the first-line drugs in the drug list.

Baidu encyclopedia-first-line medication

Baidu Encyclopedia-Second-line medication only