2. Histamine Receptor Antagonism: Some sedatives, including antihistamines, exert their sedative effects by blocking histamine receptors while in the brain, specially H1 receptors. Histamine plays a role in wakefulness and arousal, so blocking its effects encourages sedation and sleepiness. Barbiturates are One more class of sedatives, while These are https://beauztixn.bluxeblog.com/65153669/sedative-drugs-meaning-in-hindi-detailed-explanation