 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  or no longer needed. Consult your pharmacist or local waste disposal company.The uses of Trudhesa Nasal: This medication is used to treat migraine headache attacks. It helps relieve headache pain and other symptoms such as sensitivity to light or sound. Prompt treatment allows you to get back to your normal routine sooner and may decrease your need for other pain medications. This medication is not used to prevent migraines from occurring.Dihydroergotamine belongs to a class of drugs known as ergot alkaloids. It may work by narrowing the blood vessels in the brain. It may also block other pain pathways in the brain. How to use Trudhesa 0.725 Mg/Pump Act. (4 Mg/Ml) Nasal Spray Migraine Products Read the Patient Information Leaflet or Medication Guide provided by your pharmacist before you start using dihydroergotamine and each time you get a refill. Follow the illustrated directions for the proper use of this medication. If you have any questions, ask your doctor or pharmacist. Learn all preparation and usage instructions in the product package. If any of the information is unclear, consult your doctor or pharmacist. This medication comes in individual nasal spray vials. </s>