Anecdotes abound about “Ozempic babies”—when women wound up with unplanned pregnancies while taking both birth-control and the popular GLP-1 drugs for diabetes or weight loss.  But today marks the first official agency warning about the possibility of these drugs—specifically Mounjaro—decreasing the effectiveness of oral contraceptives.

Women should use the most effective contraception to avoid pregnancy while taking 'skinny jabs', the drugs regulator says.

Now the Medicines and Healthcare products Regulatory Agency (MHRA) has urged women having “skinny jabs” to use another means of contraception to prevent accidental pregnancies. The agency’s experts have also stressed that it’s not known whether weight-loss drugs could harm a baby - and so they warned they must not be used during pregnancy,