Demerol is a narcotic analgesic that affects the central nervous system. Demerol, if used for long periods, is addictive, and the user develops resistance and tolerance to the effects of Demerol which in turn will push them to consume the drug in higher volumes to get the same effects. The street name for Demerol is Demmies.
Some of the Demerol side effects are drowsiness, dizziness, nausea, cardiac arrest, shock, dysphoria, false euphoria, headache, weakness, tremors, tachycardia, bradycardia, hypotension, constipation, palpitations, etc. Withdrawal symptoms include insomnia, excessive sweating, anxiety, muscle spasms, tremors, shivering, chills, etc. Demerol overdose can cause heartbeat irregularities, weak muscles, low blood pressure, discoloration of the skin, clammy skin, etc.