take with a pinch of salt

take something with a pinch of salt (British & Australian, American & Australian)

if you take what someone says with a pinch of salt, you do not completely believe it. You have to take everything she says with a pinch of salt. She has a tendency to exaggerate. It's interesting to read the reports in the newspapers, but I tend to take them with a grain of salt.

See also: pinch, salt, take