Sicriptin 2.5 mg tablet contains bromocriptine, which works by affecting brain chemicals (dopamine). It is prescribed to help with specific neurological or hormonal conditions as directed by your doctor. Common effects can include improvement in the condition for which it is prescribed. Possible side effects include dizziness, headache, nausea, drowsiness, or low blood pressure. Take it exactly as your doctor advised, follow any instructions regarding food or activity, and report any side effects or concerns to your doctor.