Section 278 BNS or Section 278 of Bharatiya Nyaya Sanhita talks about "Sale of drug as a different drug or preparation."
Section 278 of BNS is part of CHAPTER XV OF OFFENCES AFFECTING THE PUBLIC HEALTH, SAFETY, CONVENIENCE, DECENCY AND MORALS in Bharatiya Nyaya Sanhita 2023 Act
Definition of Section 278 BNS
Whoever knowingly sells, or offers or exposes for sale, or issues from a dispensary for medicinal purposes, any drug or medical preparation, as a different drug or medical preparation, shall be punished with imprisonment of either description for a term which may extend to six months, or with fine which may extend to five thousand rupees, or with both.