A client has received a new prescription for sublingual nitroglycerin. The nurse is teaching the client how to take the medication. What does the nurse instruct the client to do first?

A. Check a radial pulse: Checking radial pulse is not necessary before taking nitroglycerin. However, it’s important to monitor the pulse after administration for any changes, such as tachycardia or bradycardia, which may occur due to the vasodilatory effects of the drug. B. Place the tablet in the buccal cavity: The correct method of administration for sublingual nitroglycerin is placing the tablet under the tongue, not in the buccal cavity. The tablet should dissolve quickly under the tongue for proper absorption. C. Take a sip of water: Taking a sip of water before administering sublingual nitroglycerin can help ensure that the mouth is moist, facilitating the absorption of the medication. This is the correct first step in preparation for taking the medication. D. Lie down for 15 minutes before administration: While it is common to feel lightheaded after taking nitroglycerin, it is not necessary to lie down for 15 minutes before administration. The client should remain seated or in a comfortable position, and the medication can be taken immediately when needed for chest pain.