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Sustiva (Efavirenz)

Also Known as Stocrin

Prescription requiredOnly Available By Prescription
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What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

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Description

Sustiva, also known by its generic name efavirenz, is a potent medication primarily used in the treatment of HIV infection. It belongs to a class of drugs called non-nucleoside reverse transcriptase inhibitors (NNRTIs). Sustiva works by inhibiting the replication of the HIV virus in the body, helping to control the infection and improve the immune system's ability to fight off other infections. This medication is often prescribed as part of a comprehensive antiretroviral therapy (ART) regimen to manage HIV/AIDS.

Before you buy Sustiva, it is crucial that you talk to your healthcare provider about potential side effects and Sustiva cost.

Fact Table
Formula C14H9ClF3NO2
License FDA approved
Bioavailability 40–45%
Legal status Prescription Drugs
Chemical Name Efavirenz
Elimination half-life 40–55 hours
Dosage (Strength) 50mg, 100mg, 200mg, 600mg
Pregnancy Consult Doctor
Brands Sustiva
Protein binding 99.5–99.75%
PubChem CID 64139
MedlinePlus a699004
ChEBI 119486
ATC code J05AG03
DrugBank DB00625
KEGG D00896
Routes of administration By mouth

Buy Sustiva (Efavirenz) online from online Canadian Pharmacy | CanPharm.com

Directions

It is crucial to follow your healthcare provider's instructions and the prescription label carefully when taking Sustiva. This medication is typically taken orally, usually once daily on an empty stomach, preferably at bedtime to help minimize potential side effects such as dizziness or drowsiness. It is essential not to crush, chew, or break the capsules, but rather swallow them whole with a full glass of water. If you have difficulty swallowing the capsules, consult your healthcare provider for alternative options.

Consistency in taking Sustiva is vital for its effectiveness. Missing doses can increase the risk of developing drug resistance and reduce the medication's efficacy. If you forget to take a Sustiva dosage, take it as soon as you remember, but if it is almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not double dose to make up for a missed one.

Ingredients

The active ingredient in Sustiva is efavirenz.

Cautions

Before starting Sustiva, it is important to discuss your medical history and any existing conditions with your healthcare provider to ensure the medication is safe and appropriate for you. Inform your healthcare provider if you have a history of liver problems, mental health disorders, seizures, or if you are pregnant or planning to become pregnant.

Sustiva may cause dizziness, drowsiness, or trouble concentrating, especially during the first few weeks of treatment. Avoid activities requiring mental alertness, such as driving or operating machinery, until you know how this medication affects you. Alcohol consumption may exacerbate these side effects, so it is advisable to limit or avoid alcohol while taking Sustiva.

This medication may also cause changes in mood or behavior, including depression, anxiety, or suicidal thoughts. If you experience any concerning symptoms, contact your healthcare provider immediately.

Sustiva can interact with various medications, including certain antibiotics, antifungals, antidepressants, and anticonvulsants. Inform your healthcare provider about all the medications you are currently taking, including prescription, over the counter, herbal, or dietary supplements, to avoid potential interactions.

Interactions

Sustiva has the potential to interact with numerous medications, affecting their effectiveness or increasing the risk of side effects. Some medications that may interact with Sustiva include Rifampin and rifabutin (antibiotics), Ketoconazole and itraconazole (antifungals), St. John's Wort (herbal supplement), Benzodiazepines (e.g., diazepam), Certain anticonvulsants (e.g., carbamazepine, phenytoin) and Protease inhibitors (another class of HIV medications). This list is not exhaustive, so it is crucial to inform your healthcare provider about all the medications you are taking to minimize the risk of interactions.

Side Effects

Like all medications, Sustiva may cause side effects, although not everyone experiences them. Common side effects may include:

  • Central Nervous System Effects
  • Psychiatric Symptoms
  • Rash
  • Liver Problems
  • Metabolic Changes
  • Other Common Side Effects

Frequently Asked Questions about Sustiva (efavirenz)


What is Sustiva (efavirenz)?

Sustiva is a prescription medication used to treat HIV infection, in combination with other antiretroviral drugs.


How does Sustiva work?

Sustiva belongs to a class of drugs called non-nucleoside reverse transcriptase inhibitors (NNRTIs), which work by blocking an enzyme that HIV needs to multiply.


How should Sustiva be taken?

Sustiva is usually taken orally once daily, with or without food. It's important to take it at the same time each day.


What are the common side effects of Sustiva?

Common side effects include dizziness, difficulty sleeping, strange dreams, drowsiness, and difficulty concentrating.


Are there any serious side effects associated with Sustiva?

Serious side effects may include rash, liver problems, and psychiatric symptoms. Contact your doctor if you experience any concerning symptoms.


Can Sustiva be taken with other medications?

Some medications may interact with Sustiva. It's important to inform your doctor about all other medications you're taking, including over-the-counter drugs and supplements.


Is Sustiva safe for pregnant women?

Sustiva may harm an unborn baby. It's important to discuss the risks and benefits with your doctor if you're pregnant or planning to become pregnant.


How should Sustiva be stored?

Sustiva should be stored at room temperature, away from moisture and heat.


What should I do if I miss a dose of Sustiva?

Take the missed dose as soon as you remember, unless it's almost time for your next dose. Do not take a double dose to make up for a missed one.


Where can I get more information about Sustiva?

Consult your doctor or pharmacist for more information or visit the official Sustiva website.