I am 21 and showing symptoms of heartburn, does prilosec work?

Yes: Prilosec is very effective as a rule.

Yes - it is 1 option: Elevate head of bed, avoid tight clothes that cinch the abdomen, avoid meals late at night, wait at least 3 hrs after a meal to lie down, eat smaller meals, maintain a healthy body weight, avoid smoking, avoid alcohol, coffee, tea, caffeine & carbonated beverages. Try acupuncture, hypnosis, ginger tea, relaxation exercises. See if specific foods are triggers such as chocolate, corn, fried foods,