Generic name: Cabergoline.

Dostinex is a dopamine receptor agonist. It works by inhibiting the secretion of prolactin, the hormone that controls lactation. 

Quick Facts About Dostinex


Used to treat hyperprolactinemic disorders, either idiopathic or due to pituitary adenomas.

Dostinex Dosage

Take with or without food.

  • Usual adult dose: 0.25 milligram twice per week. Dosage may be increased by 0.25 milligram twice per week up to a dosage of 1 milligram twice per week, depending on serum prolactin level.
  • Usual child dose: not generally recommended for children.
  • Missed dose: take as soon as possible, unless almost time for next dose. In that case, do not take missed dose; go back to regular schedule. Do not double doses.

Dostinex Side Effects

Overdose symptoms:

nasal congestion, fainting, or hallucinations. If you suspect an overdose, immediately seek medical attention.

More common side effects: constipation, fatigue, nausea, weakness.

Less common Dostinex side effects: depression, diarrhea, dizziness or fainting when rising from a sitting or lying position, dry mouth, gas, hot flashes, nervousness, “pins and needles,” sleepiness, upset stomach, vomiting. Rare side effects: abnormal vision, acne, appetite loss, breast pain, difficulty concentrating, flu-like symptoms, heart palpitations, insomnia, itching, joint pain, menstrual pain, nervousness, sore throat, stuffy nose, swelling, toothache.


Inform your doctor before combining Dostinex with:

all medications that lower blood pressure; bromocriptine (Parlodel); metoclopramide (Clopra and Reglan); phenothiazine tranquilizers such as chlorpromazine (Thorazine); thioxanthene (Navane).

No known food/other substance interactions. 

Special Cautions

Do not use if you have pregnancy-induced hypertension. If pregnant or planning to become pregnant, inform your doctor immediately. May appear in breast milk; could affect a nursing infant.

No special precautions apply to seniors.

Not generally prescribed for children.

  • Do not use in uncontrolled hypertension or if allergic to ergot derivatives. Not intended for the inhibition or suppression of physiological lactation.
  • Use caution if you have a history of liver disease.

Note: provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Dostinex side effects, please contact your healthcare provider.