The Johnson & Johnson unit whose recall of liquid children’s Tylenol and other pediatric medicines is under Congressional investigation said on Tuesday evening that it was recalling additional over-the-counter drugs.

McNeil Consumer Healthcare, the Johnson & Johnson unit, said that it was recalling four lots of certain Benadryl allergy tablets and one lot of Extra Strength Tylenol gel pills. McNeil did not respond to a reporter’s query about how many bottles those lots amounted to.

The company said in a statement that “the products were inadvertently omitted” from an earlier recall  one preceding the children’s drug recall  involving medicines made at a company plant in Puerto Rico.

Since last November, McNeil has recalled about 11.7 million bottles of various Motrin products and about 6.3 million bottles of Tylenol Arthritis Pain caplets made at that Puerto Rico plant, according to the F.D.A.’s Web site. The company began the recall after receiving consumer complaints about a moldy odor emanating from some products.