Here's a little info I found on bromo.
Author: Donna Karasic, PharmD Last modified: March 31, 2002
INDICATIONS
Prolactinomas
Hypogonadism
Infertility (male and female)
Amenorrhea with or without galactorrhea
Acromegaly
Parkinson's Disease
Non-FDA approved uses include: neuroleptic malignant syndrome, premenstrual symptoms, Cushing's disease, chronic hepatic encephalopathy
DOSAGE
Prolactinomas-1.25mg to 2.5mg/day adding additional 2.5mg as tolerated every 3-7 days until optimal response is achieved. Usual dosage ranges from 2.5mg to 15mg/day.
Hypogonadism-1.25mg to 2.5mg/day adding additional 2.5mg as tolerated every 3-7 days until optimal response is achieved. Usual dosage ranges from 2.5mg to 15mg/day.
Infertility-1.25mg to 2.5mg/day adding additional 2.5mg as tolerated every 3-7 days until optimal response is achieved. Usual dosage ranges from 2.5mg to 15mg/day.
Amenorrhea with or without galactorrhea- 1.25mg to 2.5mg/day adding additional 2.5mg as tolerated every 3-7 days until optimal response is achieved. Usual dosage ranges from 2.5mg to 15mg/day.
Acromegaly- 1.25mg-2.5mg/day for 3 days adding additional 1.25mg to 2.5mg as tolerated every 3-7 days until patient obtains optimal benefit. Usual dosage ranges from 20-30mg/day.
Parkinson's Disease-1.25 mg twice daily with assessments at 2-week intervals. Increase dose by 2.5 mg daily every 14 to 28 days.
PHARMACOKINETICS
Onset - Prolactin level decrease: 1 wk, amenorrhea/ ovulation 6-8wks, galactorrhea subsides 8-12 wks, menses and/or pregnancy 12-24 wks.
Absorption from the GI tract is 28%.
Metabolized extensively by the liver; excreted primarily in the feces with 2.5-5% excreted in urine.
Elimination Half-life: initial phase 4-5 hours and terminal phase 50 hours
Protein binding 90-96% serum albumin
ADVERSE EFFECTS
Postural / orthostatic hypotension (6%)
Drowsiness / tiredness (3%)
Nausea (18%)
Constipation (14%)
Peripheral Vasoconstriction / Vasospasm (2%)
Headache (<2%)
CONTRAINDICATIONS
Sensitivity to Ergot Alkaloids
Severe Ischemic Heart Disease or Peripheral Vascular Disease
Pregnancy
DRUG INTERACTIONS
Cyclosporin
Tacrolimus (FK506)
Amitriptyline
Phenothiazines
Erythromycin/ Clarithromycin
Ethanol
Ergot Alkaloids
FORMS
2.5mg tablets
5mg capsules
MECHANISM OF ACTION
Bromocriptine is an ergot derivative and a direct-acting dopamine agonist
Bromocriptine stimulates hypothalamic dopaminergic receptors; this results in an increase in prolactin inhibitor factor, decreasing secretion of prolactin from the anterior pituitary
Bromocriptine decreases growth hormone production
IMPORTANT POINTS/RECOMMENDATIONS
Take with food.
Additive hypotensive effects may occur in patients receiving antihypertensives; careful adjustment of antihypertensive meds may be necessary.
Higher dosages may result in reduced alcohol tolerance; patients should be cautioned to limit alchol intake while on this medication.
Blood pressure should be monitored for all patients receiving this drug especially during first few days of therapy.
Bromocriptine may impair ability to perform activities requiring mental alertness or physical coordination.
Use with caution in patients with impaired liver or renal function.
Use with caution in patients with history of myocardial infarction, arrhythmias.
more...
REFERENCES
Hutchison TA & Shahan DR (Eds): ; Bromocriptine ; MICROMEDEX® Healthcare Series: MICROMEDEX, Greenwood Village, Colorado (Edition expires 3-2002)
McEvoy, Gerald K. (Ed) ; Bromocriptine Mesylate ; American Hospital Formulary Service 2001, Bethesda, MD
Copyright © 2002 The Johns Hopkins University School of Medicine. All rights reserved.