Promethazine is a phenothiazide derivative with H1-receptor antagonist action. It acts by reversible, competitive inhibition of the interaction of histamine with H1 receptors. Histamines is released from mast cells on their encounter with antigens.
Trust® Daisy 1.5 mg also known as P2 is an emergency contraceptive for prevention of pregnancy following unprotected intercourse or if you were forced into having sex (rape) or after a known or suspected contraceptive failure
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