Selegiline is a selective MAO-B inhibitor used in the management of symptoms associated with Parkinson's disease.
Selegiline belongs to a group of medicines known as mono-monoamine oxidase-B (MAO-B) inhibitors. Its main role is to slow the breakdown of certain natural chemicals in the brain, helping to maintain their normal level. In Hong Kong, selegiline is available in products such as Eldepryl.
The most common brand that features selegiline is Eldepryl, which is supplied in tablet form. The tablets are marketed in several strengths, allowing doctors to choose the dose that best matches a patient’s needs. Both the generic version (simply called selegiline) and the branded version are listed on the Hong Kong Pharmaceutical Registry and can be obtained with a prescription from a qualified practitioner.
The ingredient works best for adults who have already been diagnosed with these conditions and who need additional symptom control.
Selegiline blocks the activity of an enzyme called MAO-B. By doing so, it reduces the break-down of dopamine, a brain chemical that influences movement and mood. With more dopamine available, the symptoms of Parkinson’s disease or mood disorders can become less severe. The effect is usually felt within a few weeks after starting treatment, but it does not replace the underlying disease process.
Most people notice only mild, temporary reactions such as:
These symptoms often ease as the body adjusts to the medication.
Rarely, selegiline can cause more serious problems that need urgent attention:
If any of these occur, seek medical help right away.
Certain groups should discuss selegiline with a healthcare professional before using it:
Allergy to selegiline or any component of the tablet formulation means the product must be avoided.
Selegiline can interact with a variety of other substances:
For a full list of possible interactions, refer to the specific product’s information sheet.
Store tablets at room temperature, away from excess moisture and direct sunlight. Treatment length varies; some people use selegiline for a few months, while others may continue for years under supervision. Always read the label of the exact product you have, as strengths and instructions differ between generic and branded forms. For detailed usage, dosing, and administration, refer to your specific medication’s information.
MAO-B inhibitor: A drug that blocks an enzyme that normally breaks down dopamine. Adjunctive therapy: An additional treatment used together with a primary medication.
This article offers general educational information about selegiline as an active substance used in various medicines. Its purpose is to help patients better understand the ingredient and the conditions it is used to treat. It is not a substitute for professional medical advice or for the specific instructions provided with individual products. Medicines containing selegiline may differ in formulation, strength, and directions for use. Always consult the labeling of your particular medication and follow your healthcare provider’s guidance for complete information on proper use, dosage, and safety.
