Tesco was “simply wrong” to tell a woman she could not buy period products during lockdown, Health Minister Vaughan Gething has said.
The supermarket apologised after saying it could not sell sanitary towels and tampons from a store in Cardiff.
The Welsh Government has banned the sale of non-essential items in supermarkets during a 17-day lockdown.
Opposition parties have called that “absolute madness” and said better communication was needed with shops.
The Welsh Government said revised guidance will be published on Tuesday.
Mr Gething told the Welsh Government briefing that supermarkets would now be able to use their “discretion”.