This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The reabsorption of a neurotransmitter, such as serotonin or norepinephrine, by a neuron following impulse transmission across a synapse.

n. A second or subsequent uptake

n. Specifically, the reabsorption of a neurotransmitter by a neuron after the transmission of a neural impulse across a synapse

n. a process of using up or consuming again

"A type of drug known as a selective serotonin reuptake inhibitor (SSRI), which is also used for depression, is effective for PTSD."

uptake   

norepinephrine    angiotensin-converting    anhydrase    metalloproteinase    proteasome