Codeine and dihydrocodeine can be bought over the counter in the UK in some circumstances. Codeine by itself is a Prescription Only Medicine and is available in 15mg, 30mg and 60mg strength tablets.
Definition of hammock. : a swinging couch or bed usually made of netting or canvas and slung by cords from supports at each end.
Lordosis is actually helped by hammock sleeping. To sleep on a hammock you sleep on an angle across the center line, and creates a flat surface along the body. If you have the hammock hung correctly, it alleviates pressure points much more effectively than even tempurpedic.