What causes medication not to work?

What causes medication not to work?

Hormonal issues, poor metabolism, poor sleep, high blood pressure, or stomach conditions could change the effect of your medications. … Some medications may need regular testing to check that the medication is working safely and effectively, such as insulin for diabetes or blood thinners for some heart conditions.

Should I stop taking medication if I have side effects?

When you have an adverse reaction, your doctor may or may not discontinue the medication. If you need to stay on this particular drug, and there is no alternative, your doctor may be able to tell you how to minimize your symptoms. You may learn that the symptoms you are experiencing are unrelated to the medication.