Dostinex 0.5mg Tablet contains cabergoline, a dopamine receptor agonist used to treat high prolactin levels (hyperprolactinemia) in adults. Elevated prolactin can cause problems such as irregular menstrual cycles, infertility in women, decreased libido, and unwanted milk production (galactorrhea). In men, it may lead to reduced testosterone levels and sexual dysfunction.Cabergoline works by stimulating dopamine receptors in the pituitary gland, which reduces the production of prolactin, helping restore hormonal balance. The tablet is usually taken as prescribed by a doctor, often once or twice weekly, depending on the condition. How Dostinex Works Cabergoline is a dopaminergic ergoline derivative that works by directly stimulating D2 dopamine receptors in the pituitary gland. This stimulation suppresses prolactin secretion, helping to reduce or eliminate symptoms caused by prolactin overproduction. Its long-acting nature allows effective control with relatively low and carefully adjusted doses under physician supervision.