Dihydergot is an injectable medication used to treat migraines. It is an ergotamine that is hydrogenated in positions 9 and 10 as a mesylate salt with a molecular weight of 679.80. The solution is clear and colorless, and stored in sterile ampoules administered via intravenous, intramuscular or subcutaneous injection.
Dihydergot Injection, USP is for patients suffering from migraines with or without aura. This medication can also be used for the treatment of episodes of cluster headaches.
Dihydergot solution is colorless and clear. Each mL ampule contains 1 mg of Dihydergot, USP. Other components include Alcohol, glycerin, water, sodium hydroxide or methanesulfonic acid.
The dose of Dihydergot may be repeated if necessary, at an interval of 1 hour, up to a total of 3 mL for intramuscular or subcutaneous administration, or 2 ml for intravenous administration over a 24-hour period. A week’s dosage should not exceed 6 ml.
Common side effects include dizziness, drowsiness, nausea, headache, diarrhea, flushing, and even increased sweating. Immediately see your physician if you experience any of these side effects.
Some rare but serious side effects include mood changes, itching, difficulty breathing, stomach pains, and rashes. More serious side effects range from chest pain, muscle weakness, erratic heartbeat, problems with vision, confusion, slur in speech and even cardiac arrest.
There are a few reports that the co-administration of dihydroergoatmine, protease inhibitors and antibiotics leads to vasospasm and eventually cerebral ischemia and/or ischemia of the extremities. This medication is contraindicated with the use of potent CYP 3A4 inhibitors such as ritonavir, erythromycin, ketoconazole, among others.
Since Dihydergot may increase the patient’s blood pressure, it is not to be given to patients with a history of hypertension, or to patients with ischemic heart diseases.
Dihydergot is used to treat acute migraines; however, it should not be given to patients with hemiplegic or basilar migraines. This medication is contraindicated in patients with peripheral arterial diseases and renal failure. It is also not advised to be given to pregnant women as the medication possesses oxytocic properties, which may cause harm to the fetus. Dihydergot should also not be given to nursing mothers and patients with hypersensitivity to ergot alkaloids.
Dihydergot injection USP may be self administered; however, guidance and assistance must be sought from the prescribing physician. If upon administration, numbness or a tingling sensation is felt in the fingers, toes, or muscles in the hands or legs, the patient must consult their physician.
The Dihydergot injection USP should be administered in a dose of 1 ml either through IV, IM or subcutaneously. Additional doses may be given if required, but must not exceed 3 within a 24 hour period, or 6 within the week.
Dihydergot has the following structural formula:
• Molecular formula of Dihydergot is C33H37N5O5
Generic name: Dihydroergotamine
Brand name(s): Agit, Angionorm, Dergotamine, Diergo, Dihidroergotamina, Dihydroergotaminum, Dirgotarl, Endophleban, Ergomimet, Ergont, Ergotonin, Ikaran, Migranal, Morena, Orstanorm, Tonopres, Verladyn
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