Prilosec can cause fatal liver rot (
necrosis), fatal pancreatitis, headache, back pain, hair loss, toxic epidermal necrolysis (a condition where your skin becomes red and scaly, then finally, painfully oozes and peels off), or it can stop the production of blood cells. Like Tagamet, Prilosec can severely distort or compromise the detoxification of other drugs.
http://ezinearticles.com/?