Ritonavir | 155213-67-5

Description :

Overview of Ritonavir

Ritonavir is an antiretroviral medicine that blocks protease, utilized to treat HIV/AIDS, as well as to enhance the pharmacokinetics of different protease inhibitors. The drug is famous for its effective blockade of HIV protease as well as the CYP3A4 enzyme. Ritonavir has been extensively used for combination antiretroviral treatment (cART) as well as a boost agent in order to increase the effectiveness of various HIV drugs.

This API appears as a white to light tan powder with a characteristic bitter taste and limited water solubility. Its mechanism—competitive inhibition of the HIV-1 protease, preventing cleavage of viral polyproteins—blocks viral maturation and replication, while its CYP3A4 inhibition increases blood levels of co-administered protease inhibitors.

Related products include Lopinavir, Atazanavir, Darunavir, and other HIV protease inhibitors and antiretroviral agents used in HIV/AIDS treatment protocols.

Applications of Ritonavir

Pharmaceutical API

• Used in antiretroviral therapy for HIV-1 infection
• Functions as a pharmacokinetic booster (low-dose) for other protease inhibitors
• Applied in combination therapy as part of highly active antiretroviral therapy (HAART)
• Used in both treatment-naïve and treatment-experienced patients
• Essential component of fixed-dose combination products
• Applied in COVID-19 treatment (as nirmatrelvir/ritonavir combination)

Formulation Development

• Used in tablets, capsules, oral solutions, and powder formulations
• Often combined with lopinavir in fixed-dose combinations
• Heat-stable formulations are available for improved storage
• Requires taste-masking in pediatric formulations
• Available in low-dose boosting formulations (100 mg)
• Compatible with various antiretroviral combinations

HIV Treatment & Pharmacokinetic Enhancement

• Provides sustained viral suppression when used therapeutically
• As a booster, it increases the drug exposure of co-administered protease inhibitors
• Reduces pill burden through once or twice-daily dosing
• Enables lower doses of primary protease inhibitor
• Overcomes resistance mutations in some cases
• Critical component of modern HIV therapy regimens

Safety & Handling Guidelines

• Avoid inhalation of fine powder
• Use gloves, goggles, and protective clothing during handling
• Potent CYP3A4 inhibitor—handle with appropriate care
• Store according to specific formulation requirements
• Some formulations require refrigeration
• Follow COA and MSDS instructions strictly

Where to Buy Ritonavir?

Ritonavir Manufacturer

ChemicalBull supplies high-purity Ritonavir API that meets IP/EP/USP quality standards for pharmaceutical formulations.

Ritonavir Supplier & Distributor

• Available in bulk packing for formulation units
• Stable and high-purity grade for research and production
• Multiple polymorphic forms available
• COA, MSDS, and regulatory documents provided

MSDS

Includes detailed safety instructions, hazard identification, and storage guidelines.

Frequently Asked Questions (FAQs)

1. What is the Ritonavir structure?
   

   Ritonavir is a peptidomimetic HIV protease inhibitor with molecular formula C₃₇H₄₈N₆O₅S₂, containing thiazole and pyridine rings with multiple functional groups.
   
   

2. What are Ritonavir's uses?
   

   Ritonavir is used for treating HIV-1 infection (as a therapeutic agent or pharmacokinetic booster), enhancing other protease inhibitors, and recently in COVID-19 treatment combinations.
   
   

3. How does Ritonavir work as a booster?
   

   It potently inhibits the CYP3A4 enzyme in the liver and intestines, slowing metabolism of co-administered drugs, thereby increasing their blood levels and duration of action.