--- title: Buy Isentress (Raltegravir) 400mg Tabs Online description: Isentress (Raltegravir) 400mg is a trusted antiretroviral for HIV-1 infection management. Secure online ordering with reliable, discreet delivery. type: product language: en url: https://medsforsale.net/buy-isentress-online-en availability: in_stock price_min: 527.99 price_max: 1029.99 currency: USD offers: - name: 400mg x 60 tabs price: 527.99 - name: 400mg x 120 tabs price: 1029.99 --- # Buy Isentress (Raltegravir) 400mg Tabs Online Isentress, featuring the active ingredient Raltegravir, is a potent integrase inhibitor developed by Merck & Co. It is used in combination with other medications to treat HIV-1 infection, helping to decrease the viral load and strengthen the immune system. This treatment is intended for patients seeking advanced HIV management. Our online pharmacy is a trusted source for Isentress in 400mg tabs, ensuring quality and reliable delivery. ## Pricing and Options | Dosage | Pack Size | Price (USD) | Price Per Pill | Status | | :--- | :--- | :--- | :--- | :--- | | **400mg** | 60 tabs | **$527.99** | $8.80 | In Stock | | **400mg** | 120 tabs | **$1029.99** | $8.58 | In Stock | [Buy Now](https://medsforsale.net/buy-isentress-online-en) ## Introduction Isentress is an antiretroviral medication used to treat human immunodeficiency virus type 1 (HIV-1) infection in adults. The drug contains the active compound raltegravir, a strand-transfer integrase inhibitor that blocks a critical step in the viral replication cycle. It is supplied as 400 mg film-coated tablets and is indicated for combination therapy with other antiretrovirals. Raltegravir is also marketed under brand names such as Isentress and other regional trade names. In addition to its approved uses, clinicians sometimes consider raltegravir for investigational or off-label indications, but such applications remain unapproved by the FDA and EMA. ## What is Isentress? Isentress is a prescription tablet that delivers the integrase inhibitor raltegravir. The medication belongs to the class of HIV-1 integrase strand-transfer inhibitors (INSTIs). It was developed by Merck & Co. and received United States Food and Drug Administration (FDA) approval in 2007, followed by European Medicines Agency (EMA) endorsement in 2008. The drug is formulated as a 400 mg tablet intended for oral administration twice daily in most treatment regimens, although once-daily dosing is approved for patients with virologic suppression for at least six months. ## How Isentress Works Raltegravir binds to the active site of the HIV-1 integrase enzyme, preventing the insertion of viral DNA into the host cell genome. By blocking strand-transfer activity, the drug halts the integration step that is essential for the establishment of productive infection. The inhibition is reversible and highly specific, resulting in rapid reduction of new viral particle formation. Peak plasma concentrations are reached within 1-2 hours after ingestion, and the drug has an elimination half-life of approximately 9 hours, supporting twice-daily dosing. Renal excretion accounts for the majority of clearance, with minimal hepatic metabolism. ## Conditions Treated with Isentress - **HIV-1 infection (adult):** Isentress is approved as part of combination antiretroviral therapy (cART) for adults with HIV-1. It is effective in both treatment-naïve patients and those who have experienced virologic failure on other regimens. The drug contributes to viral suppression, immune recovery (increase in CD4⁺ count), and reduction of HIV-related morbidity. - **HIV-1 infection (once-daily dosing):** For patients who have maintained an undetectable viral load for at least six months, a once-daily 800 mg dose (two tablets) is an approved alternative, simplifying adherence. ## Off-Label and Investigational Uses of Isentress - **Pre-exposure prophylaxis (PrEP) in high-risk populations:** Small pilot studies have explored raltegravir as part of multi-drug PrEP protocols. Although the data indicate potential efficacy, regulatory agencies have not approved this use. - **HIV-2 infection:** Raltegravir demonstrates in-vitro activity against HIV-2, and a limited number of case reports describe successful viral suppression in patients with dual HIV-1/HIV-2 infection. Formal approval for HIV-2 treatment is lacking. - **Acute HIV infection (early treatment):** Some clinical trials have examined rapid initiation of raltegravir-based regimens within days of exposure, aiming to limit reservoir formation. Results are promising but remain investigational. All off-label applications should be pursued only under the direct supervision of a qualified healthcare provider, with careful monitoring for efficacy and safety. ## Is Isentress the Right Medication for You? Isentress is most appropriate for adults diagnosed with HIV-1 who require a potent INSTI as part of a cART regimen. Ideal candidates include: - Individuals newly initiating therapy who desire a regimen with a well-characterized safety profile. - Patients with resistance to reverse-transcriptase inhibitors where an INSTI-based backbone is advantageous. - Those who have achieved sustained virologic suppression and seek once-daily dosing for convenience. Contraindications: - Known hypersensitivity to raltegravir or any tablet excipient. - Severe hepatic impairment (Child-Pugh class C) - the drug is not recommended. - Pregnancy and breastfeeding should be approached with caution; while animal data are reassuring, clinical data are limited, and the benefits must outweigh potential risks. ## Risks, Side Effects, and Interactions ### Common - **Nausea** - mild, often transient. - **Diarrhea** - typically self-limiting. - **Headache** - reported in early treatment weeks. ### Rare - **Insomnia** - occurs in a minority of patients, may resolve with dosing adjustments. - **Dizziness** - usually mild and improves with continued therapy. ### Serious - **Severe hypersensitivity reactions** (e.g., Stevens-Johnson syndrome, toxic epidermal necrolysis). Immediate medical attention is required. - **Lactic acidosis and severe hepatomegaly with steatosis** - rare but potentially fatal, especially in patients with underlying liver disease. ### Drug-Drug Interactions - **Antacids containing aluminum or magnesium:** Reduce raltegravir absorption; separate administration by at least 2 hours. - **Drugs that induce UGT1A1 (e.g., rifampicin, carbamazepine):** May lower raltegravir exposure; dose adjustment to 800 mg twice daily may be necessary. - **Combination with other INSTIs:** No additive benefit and may increase toxicity; concomitant use is not recommended. ### Drug-Food Interactions - Raltegravir can be taken with or without food. High-fat meals slightly increase exposure but do not affect efficacy. ## Use: Dosing, Missed Dose, Overdose - **Standard dosing:** 400 mg tablet taken orally twice daily, at least 12 hours apart. For patients with sustained viral suppression, 800 mg once daily (two tablets) is permissible. - **Missed dose:** If a dose is missed and it is less than 6 hours until the next scheduled dose, skip the missed tablet and resume the regular schedule. Do not double-dose. - **Overdose:** Symptoms may include nausea, vomiting, or dizziness. Seek immediate medical care; supportive measures such as gastric lavage or activated charcoal may be employed under professional guidance. - **Practical precautions:** The tablet may be taken with water; alcohol does not affect raltegravir pharmacokinetics but excess intake may impair adherence. Operating heavy machinery is safe, as raltegravir does not cause sedation. ## FAQ - ****Can I travel internationally with Isentress?** Yes. Pack the tablets in their original labeled containers, carry a copy of your prescription or a doctor’s note, and check the destination country’s import regulations for personal use of antiretroviral medication. - ****Does food affect the effectiveness of raltegravir?** Raltegravir can be taken with or without meals. A high-fat meal may modestly increase drug exposure, but this does not impact therapeutic outcomes. - ****What do the tablets look like?** Isentress tablets are white, round, film-coated, and scored for ease of splitting when a 800 mg dose is required. - ****Are there any inactive ingredients that could cause allergies?** The tablet contains lactose, magnesium stearate, and microcrystalline cellulose. Patients with severe lactose intolerance should discuss alternatives with their provider. - ****Is raltegravir safe for patients with mild kidney disease?** Mild to moderate renal impairment does not require dose adjustment, as renal clearance is not the primary elimination pathway. Severe renal failure warrants closer monitoring. - ****How does raltegravir compare to older INSTIs like elvitegravir?** Raltegravir has a shorter half-life, allowing flexible dosing, and a lower propensity for drug-drug interactions mediated by CYP3A4, unlike elvitegravir which is boosted with cobicistat. - ****Can I store Isentress in a bathroom cabinet?** Tablets should be kept at room temperature (15 °C-30 °C) away from excessive moisture and direct sunlight. A bathroom cabinet may be humid; a dry drawer is preferable. - ****Do drug-testing programs detect raltegravir?** Standard occupational drug screens do not test for raltegravir, as it is not a controlled substance. - ****Is there a pediatric formulation of raltegravir?** Pediatric dosing exists for children weighing at least 25 kg, using the same 400 mg tablet with weight-based frequency; however, Isentress is not approved for patients under 18 years without specialist oversight. - ****What is the shelf-life of the tablets?** Unopened packs retain potency for two years from the date of manufacture. Once opened, use within six months, provided storage conditions are maintained. ## Glossary **Integrase Strand-Transfer Inhibitor (INSTI)** : A class of antiretroviral drugs that block the HIV integrase enzyme, preventing viral DNA from inserting into host chromosomes. **Virologic Suppression** : Reduction of plasma HIV-RNA to below the assay’s detection limit, typically <50 copies/mL, indicating effective therapy. **Pharmacokinetic Half-Life** : The time required for the plasma concentration of a drug to decrease by 50 %; raltegravir’s half-life is about 9 hours. **Drug-Drug Interaction (DDI)** : A pharmacological effect that occurs when two medications influence each other's absorption, metabolism, or excretion, potentially altering efficacy or toxicity. ## Buying Isentress from [our online pharmacy](https://medsforsale.net/buy-isentress-online-en) Patients who encounter limited access to antiretroviral therapy through local pharmacies or insurance formularies can obtain raltegravir tablets through [our online pharmacy](https://medsforsale.net/buy-isentress-online-en). 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