Bromocriptine
Bromocriptine is a dopamine receptor stimulant used for conditions driven by excess prolactin or dopamine deficiency. Parlodel is the listed formulation. It addresses Parkinson’s Disease, Hyperprolactinaemia and Acromegaly.
Key points
- Classified as an ergot derivative, it mimics dopamine’s action directly rather than simply blocking its breakdown like some alternative treatments.
- Stimulating dopamine D2 receptors in the pituitary reduces the excess prolactin and growth hormone underlying hyperprolactinaemia and acromegaly.
- Parlodel is the tablet formulation listed, and nausea or dizziness commonly occurs when treatment begins or the dose is increased.
What is Bromocriptine?
Bromocriptine belongs to a class of medications called ergot derivatives. It mimics dopamine in the brain, which makes it distinct from many other treatments that simply prevent dopamine breakdown.
Because it acts on specific dopamine receptors, Bromocriptine serves several unrelated clinical purposes. A single tablet formulation is available, reflecting its specialist use.
What Bromocriptine is used for
Bromocriptine is used for Parkinson’s Disease, where declining dopamine causes tremor, stiffness and slow movement. By stimulating dopamine receptors, it eases these motor symptoms.
The medication also treats Hyperprolactinaemia, a condition of excess prolactin that can disrupt menstrual cycles and fertility. Additionally, it is used for Acromegaly, reducing the excessive growth hormone output from the pituitary gland.
How does Bromocriptine work?
Bromocriptine binds to dopamine D2 receptors in the brain. For Parkinson’s disease, this receptor activity replaces the dopamine signal that brain cells have lost, improving muscle control and reducing tremors.
In hyperprolactinaemia and acromegaly, the same receptor stimulation tells the pituitary gland to stop releasing prolactin and growth hormone. This lowers the hormone levels causing the condition.
Bromocriptine brands and forms
Parlodel is the available product, supplied as a tablet. This oral form is standard for the neurological and endocrine conditions within Neurology where Bromocriptine is indicated. Tablets allow measured dosing adjustments as treatment requirements change.
Safety overview for Bromocriptine
What to check before using this medicine
Review your full medical history with a doctor before starting Bromocriptine. It is not suitable if you have uncontrolled high blood pressure, heart valve disorders, or severe liver conditions. Inform your doctor of any psychiatric history.
Possible reactions and tolerability
Nausea and dizziness are common when treatment begins or the dose increases. Some people experience fatigue, nasal congestion or low blood pressure on standing. Taking the tablet with food may ease stomach upset.
Interactions and health factors
Bromocriptine interacts with medications that affect liver enzymes, particularly macrolide antibiotics. It should not be combined with other dopamine agonists or antagonists without careful review. Alcohol may worsen dizziness.
Product labelling and verified clinical sources remain the correct references for specific contraindications, interactions and reactions.