Question: how many times a day can you use a gtn spray?
Answer: No more than three doses are recommended at any one time. For the prevention of inducible angina (e.g. physical effort, emotional stress, exposure to cold) one or two 400 microgram metered doses sprayed under the tongue within 2-3 minutes of the event starting. Glyceryl Trinitrate Spray is not recommended for children.