Which of the following statements regarding drugs used in Leprosy is false
Single intramuscular injections of acedapsone maintain inhibitory levels of dapsone in tissues for up to 3 months Monthly doses of rifampicin delay the emergency of resistance to dapsone Clofazimine should not be given to patients who are intolerant to dapsone or who fail to improve during treatment with dapsone Clofazimine may cause changes in skin colour