What are the advantages and disadvantages of oral drugs and injection drugs?

Benefits: most commonly used, most convenient, most economical and painless; Generally only once or three times a day; The oral medicine has high stability and can accurately calculate the dose;

Disadvantages: unstable drug absorption; Whether eating or not, or whether food affects drug absorption, will have an impact on drug action; Oral medication may be a problem for children or the elderly.

Step 2 inject

In favor: drugs that are difficult to be absorbed orally can be injected, intravenous injection can quickly and effectively exert its efficacy, and intramuscular injection and subcutaneous injection can delay drug absorption; Injecting drugs is not easy to happen like forgetting to take medicine when taking orally.

Disadvantages: generally, you can't inject yourself and need medical help; Need to use a lot of medical resources, high cost, not economical enough; Injection will bring pain and inconvenience to patients; The most terrible thing is that if the injected drugs are not cleaned properly or thoroughly, it is likely to infect patients with bacteria and diseases. In addition, there are some disadvantages, such as leakage, excessive infusion, low blood pressure, thrombosis and so on.