I'm suffering from head lice and nits since 12 years. i have tried mediker shampoo and oil but it's of no use. i need a proper remedy to get rid of it?

Lice: You can sleep with your hair smothered in mayonnaise - that can suffocate them. You can get a prescription for Bactrim (sulfamethoxazole and trimethoprim) from your doctor. That kills the bacteria in the lice's gut, and in turn kills them.

Head lice: I would have this medically evaluated to insure correct diagnosis. You may need another medication prescribed. Wash clothing or linens in HOT Water. Soak personal items like combs or brushes in HOT water for at least 10 minutes (or throw them out if this is an option). Vacuum floors, carpets, mattresses, upholstered furniture & your vehicles.