Sustiva (Efavirenz)

Name: Sustiva
Brand: Bristol-Myers Squibb
SKU: 0414
Availability: InStock

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Sustiva Capsule

Manufacturer: Bristol-Myers Squibb

Country: Canada

Dosage: 50 mg

Qty-Price (USD):

Type:

Product: Sustiva Capsule

Manufacturer: Bristol-Myers Squibb

Country: Canada

Dosage: 200 mg

Qty-Price (USD):

Type:

Product: Sustiva Tablet

Manufacturer: MSD

Country: Turkey

Dosage: 600 mg

Qty-Price (USD):

Type:

Product: Sustiva Tablet

Manufacturer: Bristol-Myers Squibb

Country: Canada

Dosage: 600 mg

Qty-Price (USD):

Generic Equivalent of Sustiva

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Efavirenz

Manufacturer: Generic

Country: India

Dosage: 200 mg

Qty-Price (USD):

Type:

Product: Efavirenz

Manufacturer: Generic

Country: India

Dosage: 600 mg

Qty-Price (USD):

Type:

Product: Efavirenz Tablet

Manufacturer: Generic

Country: Canada

Dosage: 600 mg

Qty-Price (USD):

Sustiva Information

Sustiva and Efavirenz at CanadaPharmacyOnline.com

Brand Sustiva (efavirenz) is manufactured by Bristol-Myers Squibb in many countries worldwide, including Canada. MSD also manufactures the medication in many countries, including Turkey.

Generic efavirenz is available in many countries worldwide, including Canada and India. It is sourced from manufacturers that meet applicable regulatory standards. The specific manufacturer of your dispensed medication may vary.

Important Information about Generic Efavirenz:

Generic efavirenz contains the same active ingredient as the brand-name Sustiva. It must meet the same safety, effectiveness, and quality standards as the brand-name product. This means it is designed to work in the same way as Sustiva. Studies have demonstrated bioequivalence between generic and brand-name efavirenz, indicating comparable absorption rates and overall effects. However, individual responses to any medication can vary. If you have any questions about using generic efavirenz, talk to your doctor or pharmacist.

For more information about generic drug approval and bioequivalence, please refer to Access to Generic Drugs in Canada | Canada.ca

Dosage:

Sustiva is commonly available as 50 mg and 200 mg capsules and 600 mg oral tablets. Efavirenz is available as 600 mg oral tablets.

Your doctor will determine the appropriate dose based on your individual needs and medical conditions.

Usage:

Sustiva (efavirenz) is a prescription medication primarily used to treat human immunodeficiency virus type 1 (HIV-1) infection. It is used as part of a combination antiretroviral therapy regimen. HIV attacks the immune system, weakening the body's ability to fight infections. Without treatment, HIV can progress and lead to serious illness. Sustiva helps control the virus, reduce viral load, and support immune system function when taken consistently with other HIV medications. Efavirenz is usually taken on an empty stomach. Food, especially high-fat meals, significantly increases the concentration of the drug in your blood, which can lead to dangerous side effects.

Mechanism of Action:
Sustiva (efavirenz) is a non-nucleoside reverse transcriptase inhibitor (NNRTI). It works by blocking reverse transcriptase, an enzyme HIV needs to make copies of itself. By interfering with this process, Sustiva reduces viral replication and helps prevent further immune system damage.

Take Sustiva exactly as your doctor prescribes, following the instructions in the product monograph accompanying the medication. Consult your doctor for personalized guidance and safe use.

Side Effects:

The information below outlines potential side effects associated with Sustiva (efavirenz). It is not an exhaustive list, and individual reactions can vary. This information is for educational purposes and should not replace professional medical advice. Before starting Sustiva, it is crucial to discuss possible side effects and risks with your doctor or pharmacist.

Common side effects - These are common side effects of Sustiva; others are possible. Contact your doctor promptly if any side effects persist, worsen, or concern you, or if you experience any other concerning symptoms.
• Difficulty concentrating;
• Dizziness (To minimize the risk of dizziness and difficulty concentrating, Sustiva should be taken at bedtime);
• Fatigue;
• Headache;
• Nausea;
• Trouble sleeping

Serious or rare side effects- Seek immediate medical attention or call emergency services if you experience any of the following:
• Hallucinations or confusion;
• Severe mood changes or depression;
• Signs of an allergic reaction, such as swelling, breathing difficulties, swelling of the face, lips, or throat;
• Signs of liver problems, including yellowing of the skin or eyes

Contraindications:

The following is not an exhaustive list of contraindications. Before starting Sustiva, it is essential to discuss all your medical conditions, past and present, as well as all medications you are currently taking, with your doctor or pharmacist.

Do not take Sustiva/efavirenz if:
• You have a known allergy to efavirenz or any of the ingredients in the medication

Tell your doctor about all of your medical conditions, past and present, before starting Sustiva. This is crucial because certain conditions can affect whether Sustiva is right for you. These conditions may include, but are not limited to:
• A history of mental health conditions, including depression, psychosis, or suicidal thoughts
• A history of seizures
• Liver disease, including hepatitis

Drug Interactions:

Before taking Sustiva, it is essential to discuss all potential risks and interactions with your doctor or pharmacist. For complete and up-to-date information, refer to the DHPR.

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, and herbal supplements. It is also essential to inform your doctor about any herbal teas, recreational drugs, or significant dietary changes you are making, as these could potentially interact with Sustiva. Sustiva may interact with other medicines, but is not limited to:
• Antifungal and antibiotic medications may alter levels of efavirenz
• Hormonal contraceptives – Taking Sustiva with hormonal contraceptives can reduce their effectiveness
• Sedatives and psychiatric medications can increase the risk of nervous system side effects when used with Sustiva
• Seizure medications may reduce efavirenz levels or increase side effects
• St. John's wort can significantly reduce Sustiva's effectiveness
• Other HIV medications – Your doctor may alter your dose to reduce the risk of severe side effects

Grapefruit:
If you are taking Sustiva (the brand name for efavirenz), it is generally recommended that you avoid grapefruit and grapefruit juice. While the interaction between Sustiva and grapefruit isn't always as life-threatening as it can be with other medications (like certain statins), it can still lead to increased side effects and unpredictable drug levels in your blood.

Alcohol:
Combining alcohol with Sustiva (efavirenz) can be problematic primarily because both substances affect your central nervous system (CNS) and your liver. While there is no known "lethal" chemical reaction between the two, medical guidance generally recommends avoiding or strictly limiting alcohol while on this medication.

Pregnancy and Breastfeeding:

Sustiva is not recommended during early pregnancy, as efavirenz has been associated with potential harm to a developing fetus, particularly during the first trimester. Use effective contraception (barrier method) to prevent pregnancy when taking Sustiva and for 12 weeks after the last dose. Breastfeeding is not recommended for people living with HIV, regardless of the medication used, due to the risk of HIV transmission through breast milk. If you are pregnant, breastfeeding, or planning to become pregnant, it is crucial to consult your doctor immediately.

Frequently Asked Questions about Sustiva at Canada Pharmacy Online:

Why is Sustiva more affordable in Canada than in the United States?

Prescription drug prices, including Sustiva, are generally lower in Canada than in the U.S. due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower prices than in the U.S., where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy is dedicated to providing you with the lowest prices on high-quality products.

How do I place an order with your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784. Visit our How to Order page for more information or to learn about the ordering process.

Is there a limit on the number of tablets I can order at one time?

CanadaPharmacyOnline.com can only dispense a maximum of a three-month supply of Sustiva at a time, as per your doctor's prescription.

Can I buy over the counter from you?

No, Sustiva requires a valid prescription from your doctor. We do not sell this product without a valid prescription.

Do you ship to the United States?

Yes, we do. It typically takes 7-18 business days for your order to be delivered from our pharmacy.

Is there a generic for Sustiva?

Yes, the generic efavirenz is available.

Blog Post

Does Grapefruit Affect My Medications?
STD-Related Mobile Apps Are On The Rise

Latest News

WHO releases updated recommendations on HIV clinical management (published on January 6, 2026)

Similar Drugs in the category of AIDS Medications, HIV Treatments:

Atripla Combivir Biktarvy Epivir Reyataz

The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

Reviews From Real Customers