Labor Or Shipping and delivery Opioids cross the placenta and may produce respiratory melancholy and psycho-physiologic results in neonates. An opioid antagonist, like naloxone, must be obtainable for reversal of opioid-induced respiratory melancholy within the neonate. Codeine in oral therapeutic dosage doesn't normally exert big consequences around the cardiovascular method. https://syrupshop.online/promethazine-with-codeine-syrup/