Dart sweetened its bid for Supermarkets General.

Landover, Md.-based Dart Drug Corp. raised its $1.6-billion unsolicited takeover bid for Supermarkets General Corp. by $127 million, offering $45 per share for the nation’s eighth-largest food chain. Leonard Lieberman, chairman of Supermarkets General, said the Woodbridge, N.J., chain “will seriously consider” the new offer. Dart owners Herbert Haft and his son Robert, who offered Supermarkets General shareholders $41.75 per share cash two weeks ago, said the new bid would be for $42 in cash and $3 in preferred stock in a new company formed by the takeover.