Original sentence: The brand Benadryl is currently trademarked in the United States by Pfizer, however many drug store chains and retail outlets manufacture less-costly generic versions under their own store brands, often sold in boxes that share similarities in packaging size, colors, and appearance of the pill itself
Edited sentence: The brand Benadryl is currently trademarked in the United States by Pfizer, but many drug store chains and retail outlets manufacture substantially less expensive generic versions under their own store brands, often sold in boxes that share the size, shape and familiar pink packaging and pill color of the original