I have severe neuropathy in both legs and now hands. This has been caused by a metal called cobolt. A femoral head was inplanted in my hip in 2009, it was made of this metal. I've been on neurotin and percocet for years. The dosage of the percocet has been increased 3x, and it only works for 2 hours. My doctor wants me to take nycenta, but I am afraid of the adverse reactions. I had a temporal lobectomy because of partial complex seizures, and I don't like "respiratory depression" . I am so tired of living with pain. Thanks for any insight yo can give me.