A TV ad showing a girl going online to ask where to insert a tampon has sparked outrage.
Advertising standards watchdogs in New Zealand and Australia have received complaints about the Carefree tampons commercial, along with a second one.
The ads have been described by viewers on the firm's Facebook page as "unnecessary filth", "disgusting" and "tasteless".
One shows a schoolgirl asking Google if she is putting her tampon in the right place. The other features an amorous couple in the back of a car with a stream-of-conscious voice-over saying: "And then I remembered I was wearing a pad."
Carefree is standing behind the "honest" advertising campaign, saying many girls are anatomically confused and do not know where tampons should go.