Saquinavir

Saquinavir Uses, Dosage, Side Effects, Mechanism of Action, How Long Does it Take to Work? Saquinavir is a brand name. Its generic name is Saquinavir.

Introduction

Saquinavir is an antiretroviral (ARV) medication used to treat Human Immunodeficiency Virus (HIV). It is utilized principally as a major aspect of a mix of HIV medicines. Saquinavir works by blocking a protein in HIV that the infection needs to duplicate and spread itself in the body.

Uses

Saquinavir is used together with other antiretroviral medications to treat HIV-1 in adults and children. HIV-1 is the type of HIV that causes AIDS (acquired immunodeficiency syndrome). Saquinavir was originally developed to treat HIV-2, a different form of HIV that mostly occurs in Africa.

Mechanism of Action

Saquinavir works by blocking a protein (called HIV protease) in HIV that the virus needs to duplicate and spread itself in the body. By blocking this protein, Saquinavir makes it difficult for HIV to spread and reproduce. This helps to control the infection and decrease the amount of virus in the body.

How Long Does It Take to Work?

Saquinavir typically begins to work in approximately 1-2 weeks. The virus level in the body may start to decrease after 1-2 weeks of treatment but it can take up to several months before the benefits of taking HIV medicine such as Saquinavir can be seen. It is important that the medication is taken exactly as prescribed and that treatment is continued for the recommended duration of time.

Absorption

Saquinavir is slowly and incompletely absorbed in the gastrointestinal tract. Its bioavailability is low, meaning it is not well absorbed into the body from the intestine. It is recommended to take saquinavir with food to increase the absorption of the medication and to avoid taking it with antacids or other medication that may interfere with absorption.

Route of Elimination

Saquinavir is eliminated primarily through the kidneys and is metabolized in the liver. A small percentage of the drug is excreted unchanged in the urine. The half-life of saquinavir is 4-5 hours.

Dosage

The dosage of saquinavir depends on several factors such as bodyweight, medical condition, other medications being taken, and kidney function. Common recommended doses are 600 mg, taken orally twice-daily in combination with other antiretroviral medications. Your healthcare provider may adjust the dose as needed.

Administration

Saquinavir should be taken orally by mouth twice daily, preferably with food. The tablets should be swallowed whole, do not crush or chew them. It is important that you take your medication exactly as directed by your healthcare provider.

Side Effects

Common side effects of saquinavir include nausea, vomiting, diarrhea, headache, dizziness and abdominal pain. Other more rare side effects can include skin rashes, joint aches and pancreatitis. Contact your healthcare provider immediately if you experience any of these symptoms.

Toxicity

Saquinavir is generally well-tolerated when taken as directed. Overdose can cause serious and potentially life-threatening consequences. Symptoms of overdose include nausea, vomiting, abdominal pain, fever, rash, confusion, hallucinations, and seizures. If you suspect an overdose of saquinavir, contact your healthcare provider or local poison control center right away.

Precaution

Saquinavir can interact with several other medications, supplements, and herbs, so it is important to tell your healthcare provider about all the medications you are taking. It is also important to avoid drinking alcohol when taking saquinavir as this can increase the risk of side effects.

Interaction

Saquinavir should be used with caution in patients who are also taking ergot derivatives (e.g., dihydroergotamine, ergotamine) due to an increased risk of serious side effects such as heart attack. Saquinavir may also interact with drugs used to treat HIV (such as nevirapine), so inform your healthcare provider before taking nevirapine.

Disease Interaction

Saquinavir should be used with caution in patients with certain medical conditions such as liver problems, kidney problems, and heart problems. It is also important to inform your healthcare provider if you have had a history of bleeding disorders, as saquinavir may increase the risk of bleeding.

Drug Interaction

Saquinavir may interact with other drugs, including those used to treat HIV, such as nevirapine and ritonavir. It may also interact with other antiretroviral medications, antifungal medications, antidiabetic medications, drugs used to treat high cholesterol, and drugs used to reduce stomach acid.

Food Interactions

Saquinavir should be taken with food to increase its absorption. Grapefruit, grapefruit juice and Seville oranges may also interact with saquinavir and should be avoided when taking this medication.

Pregnancy Use

Saquinavir should be used with caution during pregnancy. Animal studies have shown some evidence of dr at birth, but human studies have not been conducted. Talk to your healthcare provider if you are pregnant or planning to become pregnant while taking this medication.

Lactation Use

Saquinavir should not be used by breastfeeding mothers due to the potential for serious adverse effects in infants. Women who are breastfeeding should talk to their healthcare provider before taking saquinavir.

Acute Overdose

An overdose of saquinavir could be fatal. Symptoms of overdose can include nausea, vomiting, abdominal pain, fever, rash, confusion, hallucinations, and seizures. Contact your healthcare provider or local poison control immediately if you suspect an overdose of saquinavir.

Contraindication

Saquinavir is contraindicated in patients with known hypersensitivity and in those taking ergot derivatives. Saquinavir should also be used with caution in patients with certain medical conditions such as liver and kidney problems and in those who have had a history of bleeding disorders.

Use Directions

Saquinavir should be taken orally by mouth twice daily, preferably with food. The tablets should be swallowed whole and not crushed or chewed. It is important that you take your medication exactly as directed by your healthcare provider.

Storage Condition

Saquinavir should be stored at room temperature and kept away from heat, light and moisture. Keep all medications out of reach of children and pets.

Volume of Distribution

The volume of distribution for saquinavir is relatively low at approximately 5L/kg. This means that saquinavir is not widely distributed in the body and is primarily found in the bloodstream and plasma.

Half Life

The half-life of saquinavir is 4-5 hours. This means it takes 4-5 hours for the amount of saquinavir in the blood to decrease by half.

Clearance

The clearance of saquinavir is 12-15 mL/min/kg. This means that saquinavir is rapidly eliminated from the body.

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