Which of the following drug must be sold by retail only on production of a prescription by a registered medical practitioner?

Schedule H: Drugs which can be sold only with prescription. On the strip of drug a long red line is present. Rx is written on the top right corner. NRx- is written on Narcotic (habit forming) drugs. XRx- not available for general market, only given under special conditions where health care provider can give the drug. OTC- Over The Counter drugs can be given without prescription.