Can quoting cymbalta (duloxetine) make me nauseous and dry heave for a month now? I quit cold turkey. Also my stomach hurts at times and am really gassy.

Possibly. The dose and length of time you've been taking Cymbalta also determines the severity of your discontinuation syndrome. The treatment is supportive in nature, taking Phenergan for nausea and vomitting, advil or tylenol (acetaminophen) for headache. Make sure you see your pcp to make sure you don't have any electrolyte imbalance or dehydration.