inversine
mecamylamine hydrochloride · by targacept
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Overview
Mecamylamine HCl is a potent, oral antihypertension agent and ganglion blocker, and is a secondary amine. It is N,2,3,3-tetramethyl-bicyclo [2.2.1] heptan- 2 -amine hydrochloride. Its empirical formula is C 11 H 21 N • HCl and its structural formula is: It is a white, odorless, or practically odorless, crystalline powder, is highly stable, soluble in water and has a molecular weight of 203.75. Mecamylamine HCl is supplied as tablets for oral use, each containing 2.5 mg mecamylamine HCl. Inactive ingredients are calcium phosphate, D&C Yellow 10, FD&C Yellow 6, lactose, magnesium stearate, cornstarch, and talc. Mecamylamine HCl MF
How to use
Therapy is usually started with one 2.5 mg tablet of Mecamylamine HCl twice a day. This initial dosage should be modified by increments of one 2.5 mg tablet at intervals of not less than 2 days until the desired blood pressure response occurs (the criterion being a dosage just under that which causes signs of mild postural hypotension). The average total daily dosage of Mecamylamine HCl is 25 mg, usually in three divided doses. However, as little as 2.5 mg daily may be sufficient to control hypertension in some patients. A range of two to four or even more doses may be required in severe cases when smooth control is difficult to obtain. In severe or urgent cases, larger increments at smaller intervals may be needed. Partial tolerance may develop in certain patients, requiring an increase in the daily dosage of Mecamylamine HCl. Administration of Mecamylamine HCl after meals may cause a more gradual absorption and smoother control of excessively high blood pressure. The timing of doses in relation to meals should be consistent. Since the blood pressure response to antihypertensive drugs is increased in the early morning, the larger dose should be given at noontime and perhaps in the evening. The morning dose, as a rule, should be relatively small and in some instances may even be omitted. The initial regulation of dosage should be determined by blood pressure readings in the…
Side effects
The following adverse reactions have been reported and within each category are listed in order of decreasing severity. Gastrointestinal: Ileus, constipation (sometimes preceded by small, frequent liquid stools), vomiting, nausea, anorexia, glossitis and dryness of mouth. Cardiovascular: Orthostatic dizziness and syncope, postural hypotension. Nervous System/Psychiatric: Convulsions, choreiform movements, mental aberrations, tremor, and paresthesias (see WARNINGS ). Respiratory: Interstitial pulmonary edema and fibrosis. Urogenital: Urinary retention, impotence, decreased libido. Special Senses: Blurred vision, dilated pupils. Miscellaneous: Weakness, fatigue, sedation.
Warnings
Important safety information
Mecamylamine, a secondary amine, readily penetrates into the brain and thus may produce central nervous system effects. Tremor, choreiform movements, mental aberrations, and convulsions may occur rarely. These have occurred most often when large doses of Mecamylamine HCl were used, especially in patients with cerebral or renal insufficiency. When ganglion blockers or other potent antihypertensive drugs are discontinued suddenly, hypertensive levels return. In patients with malignant hypertension and others, this may occur abruptly and may cause fatal cerebral vascular accidents or acute congestive heart failure. When Mecamylamine HCl is withdrawn, this should be done gradually and other antihypertensive therapy usually must be substituted. On the other hand, the effects of Mecamylamine HCl sometimes may last from hours to days after therapy is discontinued.
Interactions
Drug Interactions Patients receiving antibiotics and sulfonamides generally should not be treated with ganglion blockers. The action of Mecamylamine HCl may be potentiated by anesthesia, other antihypertensive drugs and alcohol.
Drug class
May treat
Dosage forms
TABLET
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Frequently asked questions
- What is Inversine?
- Mecamylamine HCl is a potent, oral antihypertension agent and ganglion blocker, and is a secondary amine. It is N,2,3,3-tetramethyl-bicyclo [2.2.1] heptan- 2 -amine hydrochloride. Its empirical formula is C 11 H 21 N • HCl and its structural formula is: It is a white, odorless, or practically odorless, crystalline powder, is highly stable, soluble in water and has a molecular weight of 203.75. Mecamylamine HCl is supplied as tablets for oral use, each containing 2.5 mg mecamylamine HCl. Inactive ingredients are calcium phosphate, D&C Yellow 10, FD&C Yellow 6, lactose, magnesium stearate, cornstarch, and talc. Mecamylamine HCl MF
- What does Inversine treat?
- Inversine (Mecamylamine Hydrochloride) is indicated for tourette syndrome, hypertension, malignant, per its drug-label indications. This is general reference, not medical advice.
Clinical content sourced from the FDA label via openFDA (U.S. FDA). Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
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