Usage examples (33)

• Extreme emotions trigger the release of a chemical in the brain called norepinephrine, which is related to adrenaline.
• Opiates also inhibit the production of a chemical messenger called norepinephrine, which is thought to enhance fear signals in the brain.
• Ondansetron, which indirectly blocks an adrenaline-like brain hormone called norepinephrine, appears to have fewer side effects than Inderal.
• He then went on to study the release of norepinephrine from the adrenergic neurons in the ear artery by cholinergic agonists acting on prejunctional nicotinic receptors.