Lopinavir is an antiretroviral protease inhibitor used as part of HIV combination therapy to prevent viral replication.
Lopinavir belongs to a group of medicines called protease inhibitors. These drugs block a key enzyme that the HIV virus needs to multiply, helping to keep the virus under control. Lopinavir is most often seen together with a low dose of ritonavir, which boosts its activity. In Hong Kong, the combination is sold under the brand name Kaletra.
Both the tablet and the oral solution are generic-available, though they may also appear under other brand names depending on the pharmacy. The medication is regulated by the Hong Kong Department of Health and must be dispensed with a prescription.
The medication is intended for adult patients, although dosing for adolescents is decided by the treating clinician based on weight and overall health.
Lopinavir stops a viral enzyme called protease from cutting long protein chains into the smaller pieces the virus needs to assemble new copies of itself. Without functional protease, HIV cannot produce mature viral particles, so the infection is kept at a low level. Because the drug works directly on the virus’s replication machinery, its effect can be seen within a few days after starting therapy, although full viral suppression usually takes several weeks of consistent use.
These effects are generally mild and improve with continued use or simple supportive measures such as staying hydrated and eating smaller meals.
If any of these serious symptoms appear, seek emergency care right away.
Detailed interaction lists are available on each specific product’s information page.
Store Lopinvair-containing products at room temperature, away from direct sunlight and moisture, and keep them out of reach of children. The tablet form is usually taken once or twice daily, while the oral solution may require a measured dose with a syringe. Treatment length can vary: some patients use it for a few months while others remain on therapy for many years as part of long-term HIV management. Always follow the instructions printed on the medication label and the guidance provided by your healthcare professional.
For detailed usage, dosing, administration, refer to your specific medication's information.
Protease inhibitor: A type of antiviral drug that blocks an enzyme the virus needs to make new copies of itself.
Boosting agent: A low-dose drug (like ritonavir) that increases the level of another medication in the body, allowing it to work better.
This article offers general educational information about lopinavir 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 lopinavir 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.
