Ah, those older antihistamines cross the blood-brain barrier and block H1 receptors in the brain, which makes you drowsy. But H1 blockade also causes vasodilation and can lower blood pressure—a fact I confirmed when I nearly fainted in the hostel bathroom after taking one for a rash! My own stubbornness to study through fever taught me that the 'sleepy' effect isn't just a side note; for someone running a stall after classes on minimal sleep, it's a total shutdown. So, nungei, you better take it only when you can rest, or ask for the newer non-sedating ones, okay?
#appearance#cosmetic-surgery
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