IMITREX Tablets contain sumatriptan (as the succinate), a selective 5-hydroxytryptamine1 receptor subtype agonist. Sumatriptan succinate is chemically designated as 3-[2-(dimethylamino)ethyl]-N-methyl-indole-5-methanesulfonamide succinate (1:1), and it has the following structure:
The empirical formula is C₁₄H₂₁N₃O₂S•C₄H₆O₄, representing a molecular weight of 413.5. Sumatriptan succinate is a white to off-white powder that is readily soluble in water and in saline. Each IMITREX Tablet for oral administration contains 35, 70, or 140 mg of sumatriptan succinate equivalent to 25, 50, or 100 mg of sumatriptan, respectively. Each tablet also contains the inactive ingredients croscarmellose sodium, dibasic calcium phosphate, magnesium stearate, microcrystalline cellulose, and sodium bicarbonate. Each 100-mg tablet also contains hypromellose, iron oxide, titanium dioxide, and triacetin.

Drug Uses
Imitrex is used to treat migraine headaches.General Information
Information presented here is general, should you have any further questions please contact your personal healthcare practitioner.
How Drug Works
Imitrex targets the blood vessels and the nerves which cause the migraine headaches.
How Taken
When you have migraine simptoms take one dose of Imitrex. In some cases two doses, but not more than 200 mg a day, can be taken only if instructed by your personal healthcare practitioner.
Possible Side Effects
The following side effects can occur when taking Imitrex: dizziness, nausea, fatigue, drowsiness
Warnings/Precautions
If you have any of the following conditions you should not take Imitrex: allergy to Imitrex, Raynaud syndrome, strokes in the past, certain types of heart disease, transient ischemic attacks, uncontrolled blood pressure, peripheral vascular disease. You should consult your personal doctor before taking this medicine if you smoke, have high cholesterole or high blood pressure, diabetes.
Overdose
In case of overdose you must get immediate medical care.
Drug Interactions
Before taking this medicine inform your personal doctor if you take any headache medication, ergotamine or MAO inhibitors such as linezolid, furazolidone, tranylcypromine, phenelzine, selegiline.
Missed Dose
Imitrex is not to be taken routinely. Only take this medicine when a migraine attack occurs.
Storage
Keep this medicine in its container, at normal temperature away from moisture and heat. Keep it out of the reach of children.
Pregnancy/Nursing
If you are pregnant please consult your personal doctor before taking Imitrex.
More Information
To obtain more or detailed information please contact your personal doctor or healthcare provider.
Disclaimer
This drug information is for your information purposes only, it is not intended that this information covers all uses, directions, drug interactions, precautions, or adverse effects of your medication. This is only general information, and should not be relied on for any purpose. It should not be construed as containing specific instructions for any particular patient. We disclaim all responsibility for the accuracy and reliability of this information, and/or any consequences arising from the use of this information, including damage or adverse consequences to persons or property, however such damages or consequences arise. No warranty, either expressed or implied, is made in regards to this information.