The 26-year-old hailed the £23 raspberry ketone supplement as a miracle “diet in a pill” that gave her a new bikini body.
But she was blasted on Twitter for promoting the “quick fix” tablets which critics claim have not been properly tested.
On holiday in Dubai, she tweeted a shot of the bottle adding: “Bikini bod courtesy of @OfficialForza love this diet in a pill.”
But Luisa, who was runner-up on Lord Sugar’s BBC show earlier this year,
was accused of encouraging young fans to waste their money rather than
promoting a healthy diet and exercise.
Nicola Bonner added: “Not sure promoting diet pills is a good image!! people should see healthy eating is the best lifestyle.”
Luisa hit back saying: “They’re natural actually no worse than red bull.”
A day’s worth of tablets contains one-and-a-half times an adult’s 400mg caffeine allowance.
Obesity expert Dr Caroline Cederquist said: “Side effects such as heart palpitations and feeling shaky have been reported.”
A spokesman for manufacturers Forza said: “The proof of the pudding is in the eating. Look at Luisa, she has a fantastic figure men love and women envy.”
