Instanyl – Fentanyl uses, dose and side effects
Instant contains the active substance fentanyl which belongs to a group of strong painkillers called opioids. Opioids block the pain signals to the brain. Instant acts quickly and is used to relieve breakthrough pain in adult cancer patients who are already being treated with opioids for their common pain. Breakthrough pain is an additional sudden pain that occurs even if you have taken your usual painkiller opioid medications.
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