Let's take a minute to talk about your medication. 

This is hydralazine, and you should take it as directed by your doctor. You should get into the habit of taking your doses at the same time or times each day. You should space your doses evenly, and take them with meals. 

Hydralazine is commonly used to treat high blood pressure. Controlling high blood pressure helps protect you from having a heart attack, stroke, kidney failure and loss of eyesight. 

Most patients tolerate it well, but some side effects can occur, like headaches, upset stomach or a decreased appetite. It could also make you dizzy, so you should stand slowly after sitting or lying down. These effects are normal if they are mild and should go away. If these or other side effects become reasons you want to stop taking this medicine, please talk to your doctor or pharmacist. But, don't suddenly stop taking it unless your doctor says it's okay. 

In rare cases, more serious side effects can occur. You should call your doctor right away if you notice unusual changes to your body, like a rash, unexplained fever, or a fast or irregular heart beat. 

For best results, plan ahead for refills, and continue taking hydralazine.  Also, you should follow your doctor's advice for checking your own blood pressure.