Integrase strand transfer inhibitor (INSTI): Class Overview and Comparison
Quick answer: Integrase strand transfer inhibitor (INSTI) are a class of medicines used for specific therapeutic indications. iMedic covers 3 integrase strand transfer inhibitor (insti) substances. Below is a comparison table linking to detailed pages for each.
Integrase strand transfer inhibitor (INSTI) on iMedic (3 substances)
| Substance | Primary indications | Mechanism | Common dose |
|---|---|---|---|
| Isentress | HIV-1 infection | Inhibits HIV-1 integrase, preventing viral DNA integration into host genome | 400 mg twice daily or 1200 mg once daily |
| Raltegravir | HIV-1 infection | Inhibits HIV integrase, preventing viral DNA integration into the host genome | 400 mg twice daily or 1200 mg once daily |
| Tivicay | HIV-1 infection | Dolutegravir: inhibits HIV integrase preventing integration of viral DNA into ho | 50 mg once or twice daily depending on resistance/co-medication |
About Integrase strand transfer inhibitor (INSTI)
Integrase strand transfer inhibitor (INSTI) share a common mechanism of action and clinical use. Specific dosing, side effects, contraindications, and drug interactions vary between individual substances within the class. Click any substance above for full prescribing information and patient guidance.
Common considerations across the class
- Indication-specific selection: Different members may be preferred for different conditions or patient populations
- Dose equivalence: Members of the same class are not always interchangeable on a 1:1 dose basis
- Drug interactions: Class members often share interaction profiles (e.g., CYP enzyme effects) but individual variation matters
- Side effects: Some side effects are class-wide; others are substance-specific
- Contraindications: Individual contraindications may not generalize across the class
Always consult the prescribing information for the specific medicine prescribed and discuss with your clinician.
Frequently asked questions
What are Integrase strand transfer inhibitor (INSTI)?
Integrase strand transfer inhibitor (INSTI) are medicines that share a common mechanism of action used for specific therapeutic indications. iMedic currently covers 3 substances in this class with detailed pages for each.
Are all Integrase strand transfer inhibitor (INSTI) interchangeable?
No. While medicines in the same class share a mechanism, they differ in potency, dosing, drug interactions, and tolerability. Switching between them is a clinical decision based on individual response, side effects, and treatment goals.
How do I choose between different Integrase strand transfer inhibitor (INSTI)?
Selection depends on the specific clinical indication, patient factors (age, comorbidities, kidney/liver function, other medications), tolerability of side effects, cost, and clinician preference. This is a prescribing decision.
Are Integrase strand transfer inhibitor (INSTI) available as generics?
Most well-established class members are available as generic alternatives, often substantially less expensive than brand-name versions while clinically equivalent. Newer members may still be brand-only.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.