DOSTINEX
What it isLong-acting dopamine D2 agonist; hyperprolactinemia and prolactinoma.
Why this oneMore effective and better tolerated than bromocriptine, dosed once or twice weekly.
What limits itCardiac valve fibrosis at the high doses used in Parkinson disease, so echocardiography is needed then. Impulse-control disorders.
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| FDA dosing | Population | Start | Target | Max |
|---|---|---|---|---|
| Hyperprolactinemic disorders | Adults | 0.25 mg twice weekly | Titrate to normal serum prolactin | 1 mg twice weekly |
Titration No less than 4 weeks between dose increases
Renal Undefined
Hepatic Mild (Child-Pugh A): no adjustment; moderate (B): increase adverse-reaction monitoring; severe (C): not recommended
Pregnancy If conception occurs, discontinue if maternal/fetal risks outweigh benefits; generally avoid dopamine agonists in pregnancy/postpartum
Lactation Not recommended while breastfeeding; avoid for lactation suppression
NO BOXED WARNINGS
Principal riskValve fibrosis at high dose; impulse-control disorders
Cost, est. cash$10–$300/month
Generic entry2005
Legacy pregnancy categoryB
Defining liabilityGenerally tolerated at therapeutic doses; clinically important risks are agent-specific and increase with interactions or organ impairment.

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