Bromocriptine: what it treats, how it works, and how to stay safe
Bromocriptine is a prescription medicine used for high prolactin levels, prolactin-secreting pituitary tumors (prolactinomas), some menstrual and fertility issues, and certain cases of Parkinson’s disease. A quick-release form is also used as an add-on for type 2 diabetes. If you were told to start bromocriptine, this plain guide will help you know what to expect and what to watch for.
How it works: bromocriptine acts like dopamine in the brain. That lowers prolactin from the pituitary gland, which often reduces unwanted milk production, shrinks small prolactinomas, and can restore normal periods and fertility. For Parkinson’s, it helps boost dopamine signals to improve movement control.
Typical use and dosing basics
Doctors usually start with a low dose to cut side effects, then raise it slowly. For prolactin issues, people often begin at a low nightly dose and increase every few days or weeks based on blood tests and symptoms. Parkinson’s dosing is higher and handled by a specialist. The diabetes quick-release form is taken in the morning within a couple hours of waking. Always follow your prescriber’s exact plan—doses are individualized.
Side effects, warnings, and practical tips
Common early side effects include nausea, lightheadedness when standing, fatigue, and headache. Taking the first doses with food or at bedtime often helps. Stand up slowly to reduce dizziness and avoid driving until you know how you react.
Important safety points: bromocriptine can interact with drugs that block dopamine (some antipsychotics, metoclopramide), which can reduce its benefit. It also needs care with blood pressure medicines and certain heart drugs. If you have uncontrolled high blood pressure, serious heart valve problems, or an active psychiatric disorder, tell your clinician—bromocriptine may be unsafe or need close monitoring.
Pregnancy and breastfeeding need a talk with a specialist. In pregnancy, doctors may use bromocriptine for large or growing prolactinomas under careful supervision. It’s not a routine choice just to stop breastfeeding unless there’s a clear medical reason.
When to call your doctor: seek help if you get chest pain, shortness of breath, sudden swelling, fainting, severe abdominal pain, or new severe mood or hallucination symptoms. Your provider will check prolactin levels, blood pressure, and symptoms after you start treatment.
Buying and prescriptions: bromocriptine is prescription-only. Use licensed pharmacies and avoid sellers that don’t ask for a prescription. Fake or expired pills can be dangerous. Keep a current list of all medicines and share it with your prescriber to spot interactions.
Quick practical tip: start low and move slowly. Most side effects fade after a few weeks. If a side effect won’t go away or gets worse, speak up—there are safe alternatives and dose adjustments that often help.
