The guidance used an economic model which NICE was given in confidence. More effort should have been made to make the model available for public scrutiny, Mr Justice Holman said.
The ruling has been welcomed by the National Osteoporosis Society. It said the decision would provide the opportunity to prove the economic model NICE used was flawed.
Servier Laboratories challenged NICE at judicial review because it believed the guidance unfairly restricted access to its drug Protelos (strontium ranelate).
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