Police warn drug users of 'highly potent' opioids / Dangerous synthetic opioids and animal sedatives found in Australian wastewater / Deadly synthetic opioids 40 times stronger than fentanyl detected in Australian wastewater for first time / India bans two opioids behind crisis in West Africa / 'There has never been a more dangerous time to take drugs': The rising threat of synthetic opioids / Fentanyl has killed thousands. Here are some facts about the powerful opioid / 'I took one pill and my whole body was gone': Kathy Bates on opioids, ageing and selfish co-stars / US raises alarm over Iran's chemical weapons with synthetic opioids / Lethal super-strength opioids found in 130 samples of fake prescription medicines / Nanobody capable of limiting the side effects of opioids discovered