Like Pfizer, Roche warns of risks in the UK but not in the US

Yesteday I posted (here) that Pfizer has not sent doctors in the US a letter warning them of certain risks related to one of its products even though it did send letters to doctors in the UK. Today, Pharmalot is reporting (here) that Roche has done exactly the same thing. Roche said it is submitting an updated label to US regulators, but that it will not be issuing warning letters to doctors in the US unless the FDA requires it.