Viraday is a combination tablet that contains Emtricitabine (200mg), Tenofovir disoproxil fumarate (300mg), and Efavirenz (600mg), antiretroviral medications used to treat human immunodeficiency virus (HIV) infection in adults.
Composition:
- Emtricitabine: 200mg
- Tenofovir disoproxil fumarate: 300mg
- Efavirenz: 600mg
- Tablet core: lactose monohydrate, magnesium stearate, silicon dioxide
- Film coating: hypromellose, polyethylene glycol, titanium dioxide
Mechanism of Action:
Viraday works by inhibiting the activity of HIV reverse transcriptase, an enzyme necessary for the virus to replicate. The combination of Emtricitabine, Tenofovir disoproxil fumarate, and Efavirenz has a synergistic effect in suppressing HIV replication.
Emtricitabine:
- Emtricitabine is a nucleoside reverse transcriptase inhibitor that inhibits the activity of HIV reverse transcriptase.
- It is converted into its active form, emtricitabine triphosphate, which is incorporated into the viral DNA, terminating the chain and preventing the virus from replicating.
Tenofovir disoproxil fumarate:
- Tenofovir disoproxil fumarate is a nucleotide reverse transcriptase inhibitor that inhibits the activity of HIV reverse transcriptase.
- It is converted into its active form, tenofovir diphosphate, which is incorporated into the viral DNA, terminating the chain and preventing the virus from replicating.
Efavirenz:
- Efavirenz is a non-nucleoside reverse transcriptase inhibitor that inhibits the activity of HIV reverse transcriptase.
- It binds to the active site of HIV reverse transcriptase, preventing it from replicating the viral genome.
Uses:
Viraday is used to treat HIV infection in adults. It is recommended for patients who have not previously received antiretroviral therapy or who have failed other antiretroviral regimens.
Dosage:
The recommended dosage of Viraday is one tablet once daily, taken with food.
Side Effects:
Common side effects of Viraday include:
- Headache
- Nausea
- Vomiting
- Fatigue
- Dizziness
- Insomnia
- Rash
- Abnormal dreams
- Increased blood lipids
- Neuropathy (nerve damage)
- Lactic acidosis (build-up of lactic acid in the blood)
Recommendation:
Viraday should be used under the guidance of a healthcare professional. Patients should be monitored regularly for liver function tests, lipid profiles, and glucose levels.
Important Note:
- Viraday is not recommended for use in patients with severe liver disease (Child-Pugh C).
- Patients with pre-existing kidney disease should be monitored closely for signs of kidney damage or toxicity.
- Patients taking other medications, including antiretroviral agents, may be at risk for interactions with Viraday.
- The safety and efficacy of Viraday in pregnant or lactating women have not been established.
- Patients should be counseled on the importance of taking concomitant therapy as prescribed by their healthcare provider.
- Patients should be monitored for neuropsychiatric symptoms, such as depression, anxiety, and sleep disorders.
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