Opiates distort the pain signals on route to the part of the brain that deals with pain, paracetamol is the only painkiller that blocks the pain signals completely, as you will know 1000mg is the maximum dose taken every 4-6 hours. Paracetamol actually interacts with opiates, in this combination it helps to improve the quality and can extend the time that opiates give pain relief. Paracetamol is very a dangerous drug. to take more than 1000mg can have some very serious consequences.