Buy Demerol 100mg $300.00 Buy demerol 100 mg without prescription in the USA and Europe. We ship worldwide and express delivery is our main priority. Demerol 100 mg is prescribed to provide moderate to severe pain relief, Demerol works by changing how both the brain and nervous system respond to pain. The potency of Demerol is similar to the potency of morphine. Like morphine, Demerol is a controlled substance in the schedule category, meaning it has a high potential for abuse. Add to cart