What is Midrin and how is it used?
Midrin is a prescription medicine used to treat the symptoms of Migraine Headache and Tension Headache. Midrin may be used alone or with other medications.
Midrin belongs to a class of drugs called Analgesics, Other Combos.
It is not known if Midrin is safe and effective in children.
What are the possible side effects of Midrin?
Midrin may cause serious side effects including:
- rash,
- itching,
- swelling of the face, tongue, or throat,
- severe dizziness, and
- trouble breathing
Get medical help right away, if you have any of the symptoms listed above.
The most common side effects of Midrin include:
- dizziness,
- drowsiness, and
- nausea
Tell the doctor if you have any side effect that bothers you or that does not go away.
These are not all the possible side effects of Midrin. For more information, ask your doctor or pharmacist.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
DESCRIPTION
Each red capsule contains Isometheptene Mucate USP, 65 mg, Dichloralphenazone USP, 100 mg, and Acetaminophen USP, 325 mg.
Isometheptene Mucate is a white crystalline powder having a characteristic aromatic odor and bitter taste. It is an unsaturated aliphatic amine with sympathomimetic properties.
Dichloralphenazone is a white, microcrystalline powder, with slight odor and tastes saline at first, becoming acrid. It is a mild sedative.
Acetaminophen, a non-salicylate, occurs as a white, odorless, crystalline powder, possessing a slightly bitter taste.
Midrin (acetaminophen, isometheptene and dichloralphenazone) capsules contain FD&C Yellow No. 6 as a color additive.
INDICATIONS
For relief of tension and vascular headaches*.
*Based on a review of this drug (isometheptene mucate) by the National Academy of Sciences-National Research Council and/or other information, FDA has classified the other indication as "possibly" effective in the treatment of migraine headache. Final classification of the less-than-effective indication requires further investigation.
DOSAGE AND ADMINISTRATION
FOR RELIEF OF MIGRAINE HEADACHE: The usual adult dosage is two capsules at once, followed by one capsule every hour until relieved, up to 5 capsules within a twelve hour period.
FOR RELIEF OF TENSION HEADACHE: The usual adult dosage is one or two capsules every four hours up to 8 capsules a day.
HOW SUPPLIED
Red capsules imprinted with the word MIDRIN (acetaminophen, isometheptene and dichloralphenazone) in pink letters. Bottles of 100 capsules, NDC 14508-304-08. Store at controlled room temperature 15°-30°C (59°-86° F) in a dry place.
Manufactured and distributed by: CARACO PHARMACEUTICAL LABORATORIES, LTD. DETROIT, MI 48202 Under license from: Sun Pharmaceutical Industries. FDA Rev date: n/a

SLIDESHOW
16 Surprising Headache Triggers and Tips for Pain Relief See SlideshowWARNINGS
No information provided.
PRECAUTIONS
Caution should be observed in hypertension, peripheral vascular disease and after recent cardio-vascular attacks.
OVERDOSE
No information provided.
CONTRAINDICATIONS
Midrin® (acetaminophen, isometheptene and dichloralphenazone) is contraindicated in glaucoma and/or severe cases of renal disease, hypertension, organic heart disease, hepatic disease and in those patients who are on monoamine-oxidase (MAO) inhibitor therapy.
CLINICAL PHARMACOLOGY
Isometheptene Mucate, a sympathomimetic amine, acts by constricting dilated cranial and cerebral arterioles, thus reducing the stimuli that lead to vascular headaches. Dichloralphenazone, a mild sedative, reduces the patient's emotional reaction to the pain of both vascular and tension headaches. Acetaminophen raises the threshold to painful stimuli, thus exerting an analgesic effect against all types of headaches.
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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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