Thank you for contacting Just Answer. Don't stop cold. You need to taper off.
You may want to go to this website cymbaltawithdrawal.com
People have varying symptoms as well as different lengths of time before the withdrawal symptoms from discontinuing cymbalta stopped. Some people have been successful at the tapering-off process.
Two huge tips that seem to work for some people are the following:
1) Getting a low-dose prescription for Prozac, which itself is an SSRI but has a longer half-life than Cymbalta; it also has very minor withdrawal symptoms when stopped completely.
2) Do NOT take Cymbalta "every other day" when weaning off. Cymbalta only has a half life of 12 hours, which means if you skip a day your body basically goes into shock from lack of the drug. Instead, gradually reduce the daily dosage. This can be quite difficult because Cymbalta only comes in 60, 30, and 20 mg time-released capsules. So taking the low dose of Prozac may help.
Please do this in consultation with a Psychiatrist.