Tafnat

Tafnat tablets are required to prevent for HIV-1 infections, now it is also indicated in the condition like hepatitis B viral infection Tenofovir Alafenamide is an active most predominant component which is present in Tafnat tablet. An ideal activity of Tafnat tablet is; Anti-HIV or Anti-retroviral activity Anti-hepaciviral activity Tafnat is not a curable medicine; it may prevent transmission of virus to others and reduce the exposure

Tenofovir Alafenamide

Tafnat

25mg

Natco




Tafnat tablets are used for

Tafnat tablet are majorly indicated in the conditions like; Now-a-days Tafnat is used to treat chronic hepatitis B viral infection in adolescent patients with compensated (child Pugh A) liver disease.

Tafnat strength availability

Tafnat is available in the form of tablet containing 25mg of tenofovir Alafenamide as an active ingredient



Tafnat tablet consist as tenofovir Alafenamide, which is prodrug converted in in-vivo as an active form. Tenofovir Alafenamide is lipophilic in nature has cell penetrable effect, which permeates into liver cells by passive diffusion method. After that, TAF is altered into tenofovir by undergoing hydrolysis with the help of carboxylesterase-1 which is present in liver cells.

Tenofovir is phosphorylated into tenofovir diphosphate intracellularly using cellular kinase enzyme. The pharmacologically active metabolite tenofovir diphosphate is expels anti-hepaciviral activity by obstructing hepatitis B viral multiplication through infusion of this metabolite by reverse transcriptase enzyme into viral DNA

The absorption of Tafnat tablet is occurs rapidly, the peak plasma time occurs in 0.48 hours The effect of Tafnat with food (high fat meal) is occurs as 1.65 (0.51, 1.81) compared to fasted state.

The human plasma protein bound to Tafnat tablet is occurs nearly at 80% The blood to plasma ration of Tafnat tablet is attains at 1.0

Tafnat tablet is metabolized into active form by carboxylesterase-1, cathepsin A (PBMC’s) The major route of elimination of tenofovir Alafenamide metabolites occurs through urine <1%; feces 31.7% The terminal half life period of Tafnat tablet is reaches in 0.51 hours



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Tafnat
Brand Tafnat
Ingredients Tenofovir Alafenamide
Strength 25mg
Manufactured Natco
Rating

Before starting the therapy

Tafnat has some serious life-threatening conditions, to control this problems patient should be counsel about the exposure of risk associated with Tafnat therapy

Some precautions

Before initiating the therapy with Tafnat tablets, patient must be investigating by measuring the count of HBV antigen & HBV core anti-body Examine the patients for HIV-1 infection, if test is positive Tafnat should not be used alone, combined with other anti-retroviral medicines The recommended dosage of Tafnat tablet is 25mg of tablet should be taken as a single dose with food Tafnat is used as single dose therapy In renal and hepatic impairment patients, dosage adjustment is not suggested In decompensated cirrhosis condition, Tafnat is not recommended

Over dosage

If over dosage occurred in the patients who are receiving Tafnat , should be observed for affirmation of toxicity and monitor the symptoms occur. The other route to control the over dose of tenofovir is hemodialysis, used to eradicate the tenofovir content from the body by separating at the range of 54%

Serious adverse effects

Risk of severe acute worsening of hepatitis B viral infection Aggression of renal impairment Lactic acidosis or hepatomegaly with steatosis

Common side effects

Headache, Fatigue, Abdominal pain, Nausea, Back pain, Cough, Glycosuria, Pancreatitis, Amylase and lipase elevation

Tafnat tablet should be used carefully in the conditions like

Kidney related problems, HIV infected patients (used in combination with anti-retroviral drugs), Hepatic problems, Bone problems, Pancreatitis In severe acute aggravation of HBV infection, to avoid this problem patients should be monitored frequently with their clinical rating and symptoms before going to start the treatment

Exposure of development of HIV resistance in patients who are having HIV-1/HBV co infection

To prevent this condition patients should be investigate by measuring antibody counting New outbreak or aggravation of renal problems, to control these problems avoid concomitant of drugs depleting the renal functions with Tafnat tablets or monitored the laboratory levels periodically Lactic acidosis or hepatomegaly with steatosis, treatment should be discontinued

Limitations involved in Tafnat tablet

The major drawback of Tafnat tablets are followed as; After discontinuation of treatment, serious conditions like hepatomegaly with steatosis or lactic acidosis occurs Severe aggravation of acute hepatitis B infection

Tafnat interacted with some drugs like

  • Tenofovir Alafenamide is a P-gp& BCRP transporter substrate, while concurrent usage of Tafnat with P-gp or BCRP strong inhibitors causes alteration in absorption of tenofovir Alafenamide
  • P-gp or BCRP inducers decreases the effect of concentration of tenofovir Alafenamide which leads to reduce the healing effect of tenofovir Alafenamide
  • Moderate inhibitor of P-gp or BCRP with Tafnat tablet causes increasing the concentration of tenofovir Alafenamide
  • Tafnat combined with drugs which reduce the renal functions causes increasing the concentration of tenofovir Alafenamide. This is because tenofovir is highly eliminated through kidney
  • Tafnat with anti-convulsants like phenytoin, Phenobarbital, or carbamazepine causes decreasing the tenofovir Alafenamide concentration
  • Tenofovir Alafenamide interacts with anti mycobacterials agents causes decreasing the effect of concentration of TAF
  • Tafnat with st Johns wort causes decreasing the therapeutic effect of tenofovir Alafenamide


Tafnat contraindicated


No contraindication occurs in Tafnat usage.

Some hypersensitivity reactions may causes due to contraindicated to component of Tafnat tablet



Tafnat uses in specific population

Tafnat is used in safe manner In some patients, tenofovir Alafenamide metabolite under gone placental transformation in such conditions Tafnat tablet should not be recommended Tafnat is used only under the guidance of medical practitioner during pregnancy

In HIV infected condition, breast feeding is not suggested to prevent the adverse effects, consult with physician

The safety and efficacy of Tafnat tablets in pediatric patients with the age less than 18 years has not been established

Tafnat tablet container should be kept at room temperature below 30°C Protect the container away from moisture, heat & light

If patient missed to have the dose of Tafnat tablet, should consult with physician and take the dose as soon as possible. Or the missed dose should be skipped and follow the regular dosing schedule





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