<qa>  What is the dose of efavirenz?- Phase 2 12 weeks: tenofoviremtricitabine or tenofovir lamivudine or zidovudinelamivudine plus efavirenz SustivaStocrin 400 mg once daily plus Rifinah or local generics once daily rifampicin 600 mg and isoniazid 300 mg if 50kg or rifampicin 450 mg and isoniazid 300 mg if 50kg. 