I've have serve gastric reflux i'm on 20 mg twice a day i've had 8 in the last 2 hrs tried milk and gavascon but nothing worked i don't know what to do?

Maybe its not reflux: Lack of response to acid suppression & antacids raises several possibilities: 1) you have excessive acid production; 2) your reflux is of non-acid material; 3) your esophagus is severely inflammed, infected, or ulcerated; 4) you have heightened esophageal sensitivity; 5) your present symptoms are not reflux-related. If you are in that much distress, seek emergency care now for evaluation & relief.

Prilosec: I would try over-the-counter prilosec, avoid foods that trigger reflux, and sleep with extra pillows. If no improvement, see your doctor.