<prompt> Under Revised National Tuberculosis Control Program, drug used for chemoprophylaxis in children isRifampicinIsoniazidEthambutolCiprofloxacin  <response>: TB preventive therapy in children: The dose of INH for chemoprophylaxis is 10mgkg administered daily for 6 months and it can be provided to 1 All asymptomatic cases of smear-positive 2 All HIV infected children who either have known exposure to an infectious TB case or tuberculin test positive but have no active TB 3 All tuberculin skin test positive children who are receiving immunocompromised therapy 4 A child born to a mother who was diagnosed to have TB in pregnancy should receive prophylaxis for 6months, provided congenital TB should be ruled out. Ref: Park;s textbook of preventive and social medicine 23rd edition. 