Tafenoquine or Krintafel is used to treat p.vivax malaria.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/hyderabad-gates-funded-malaria-drug-gets-big-break
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-chronicle-telangana
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/malaria
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vector-borne-diseases
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health