The SSRI class is neither antagonist nor agonist. They are re-uptake inhibitors. To the extent of my knowledge (I am NOT a doctor), a serotonin: agonist enhances production of sertonin at the source...
Pheniramine is a histamine drug which have anticholinergic action but its effect is agonistic or antagonist or partialagonist.
Pheniramine is a histamine drug which have anticholinergic action but...
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