The Shallow Hal star recently designed a diet cleanse that is meant to help individuals purge their bodies. The kit is advertised on Paltrow's website Goop.
"It simply supports the body's natural detoxification process," the makers of the cleanse stated.
However, nutritionist Catherine Collins told the Daily Mail that the programme is not advisable.
"She is not a nutritional expert," Collins said. "I would not recommend it."
The diet cleanse involves a consuming a single low-calorie meal in addition to drinking two protein shakes and taking various vitamins.
Paltrow recently confessed that she is grateful to have struggled with depression in the past.
The actress previously posted a list of her favourite hangover cures following New Year's Eve.