Been on 30mg of methadone for 90 days. how bad would the withdrawals be if i quit cold turkey today?

It depends: Every person is different in their response to chemical and physical addiction to medications. You should discuss this with your prescribing physician, addictionologist, pain specialist or other health care provider before coming off this medication. You might be one with little or not withdrawal symptoms, however the symptoms could be severe. You state of health is improtant & could be harmed!

Not fun.: The withdrawal may begin later, but opioid withdrawal of any kind is usually no fun.

Tough: Opioid withdrawal is characterized by everything opposite to the drug. Pain, diarrhea, tachycardia, and worse. Methadone is a long-acting drug, so may take a little while to feel effects, as they worsen. I would not try adjusting dose without medical oversight. Dose alone cannot really predict how you will be affected. Talk to prescribing doctor about your wish to reduce dose.

Not good: If you are otherwise healthy expect a week of flulike symptoms, aches, headache, spasms, anxiety, tearing, runny nose, diarrhea. But not dangerous medically.