What are the contraindications of Acid Reducer,Zantac,Zantac 150,Zantac 75?

What should I tell my health care provider before I take this medicine? They need to know if you have any of these conditions:
  • kidney disease
  • liver disease
  • porphyria
  • an unusual or allergic reaction to ranitidine, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

Source: http://www.healthline.com