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How long does it take for serotonin receptors to recover? 

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The results indicate that, after long-term blockade or stimulation, serotonin autoreceptors become respectively hyper- or hyposensitive towards serotonin.
recovery of serotonin uptake sites) while functional recovery may be permanently impaired since serotonin content remains markedly (40-50%) below levels in age-matched controls for as long as one year after drug administration.
Our study suggests that 5-HT2A receptors internalize and return to the surface after both serotonin- and PKC-mediated processes.
Open access
R W Fuller, D T Wong 
01 Jul 1977
152 Citations
This decrease in serotonin turnover and release may be a compensatroy mechanism in response to an enhanced action of serotonin on synaptic receptors.
This effect of serotonin is mediated via serotonergic receptors.
The modified response, in isolated, aggressive mice, to several agents specific to serotonin receptors in the brain suggests an altered receptor availability for serotonin-like ligands.
These data demonstrate that EEDQ in vitro and in vivo acts as an irreversible antagonist of S2 serotonin receptors and that it can be used to investigate the recovery rate of these receptors.
We conclude that serotonin 5-HT2 receptors both induce and undergo several forms of desensitization.
Pharmacological manipulations and receptor knockdown indicate that serotonin acts at least in part via 5-HT1A receptors.
These data support previous suggestions that supersensitivity develops specifically in serotonin receptors following afferent denervation.

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