The sales of Johnson & Johnson pain relievers are seeing a downward trend as a series of recalls seem to have made consumers suspicious of once-sterling brands for example Tylenol and Benadryl.

An eighth recall, which had been announced on Thursday, could possibly make the customers apprehensive. That suspicion and the huge amount of products recalled from store shelves together look to be coming at a cost of tens of millions of dollars every month for J&J.

Thursday’s recall by Johnson & Johnson’s McNeil consumer health care unit involves 21 lots of products, including Children's Tylenol.

Those were recalled due to a moldy or rotting smell, extending a large Jan. 15 recall that was linked with a nauseating chemical on shipping pallets.

The firm said that the new lots were as well added to the recall as a safety measure after an internal review found those lots, shipped and stored before Jan. 15, had been on the similar type of wooden pallets.

An April 30 recall of no less than 130 million bottles of kids’ and infants' liquid medicines, J&J said, might not meet compulsory quality standards and as well may contain tiny metal elements or may have too much active constituent.