Vide Rly Board Letter No. 2014/RS(G)/779/13, New Delhi dated 03.02.15. Whenever drug samples on analysis are found to be not conforming to standards, the firms/ suppliers are required to replace the whole batch free of cost with another batch to all the consignees, irrespective of whether the batch has been used completely/ partially or not. Vide Rly Board Letter No. 2022/RS(G)/779/13 dated 25.08.2022. following amendment is issued in para (i) of Rly Board Letter No 2014/RS (G)/779 /13 dated 04.06.2018. (Existing:- The firm would be asked to replace substandard batch by another batch. Amended:- Firm would be asked to replace substandard batch by another batch from a different manufacturing unit). However, the firm may be allowed to replace the medicine from a different manufacturing unit, if such unit is available with the firm, provided the concerned manufacturing unit has been inspected and approved by Railway Authorities, Vide Rly Board Letter No. 2021/H/4/1/DP/Policy New Delhi, dated 13.09.22.