Withdrawals after 50 days? I didn't know that was possible so I really can't help with suggestions outside the norm. The norm being the ER, a detox facility, etc... Plus drinking lots of water, taking vitamins, eating well and getting enough sleep.
If I were you I'd see a doctor ASAP. My thought is that it's another medical issue and you're masking it with cough syrup (which is really just very bad tasting booze). Get it checked out!!!