Description of Tenof-EM
Generic: Emtricitabine and tenofovir disoproxil fumarate
Brand: Tenof EM
Strength: 200mg, 300mg respectively
Category: anti-retroviral drug
Tenof EM is a nucleoside reverse transcriptase inhibitor; this is involved in treating HIV infection.
Tenof EM tablets eliminate the HIV virus from the blood.
Tenof EM is not permanent remedy, it does not cure the disease, but it prevents AIDS.
Tenof EM is Available in various dosage forms like tablets, capsules and solution form.
Tenof EM is not under the conditions like;
o Allergic conditions
o Lactic acidosis, abnormal liver problems
o Kidney problems
CD 4+ cells are essential for the prevention of invasion of virus into the body.
HIV is eradicate the cells and leads to cause vulnerable condition like AIDS.
Tenof EM is useful in the treatment of HIV infection, by improving the CD 4+ cells in the body
Pharmacology of Tenof-EM
There are two major anti retroviral agents that present in Tenof EM; contains Emtricitabine, tenofovir disoproxil fumarate.
This is one of the active ingredients of Tablet Tenof EM, Emtricitabine is a nucleoside analog of cytidine, various cellular enzymes involved in conversion of Emtricitabine into Emtricitabine 5â€™-triphosphate.
This conversion will prohibit the effect of HIV-1 reverse transcriptase.
This binds with deoxycytidine 5â€™ triphosphate, mingled into viral DNA and chain termination of the cells occur.
Tenofovir disoproxil fumarate:
Tenof EM â†’ an acyclic nucleoside phosphonate diester analog of adenosine monophosphate.
Tenofovir disoproxil fumarate is converted into tenofovir by diester hydrolysis.
Tenofovir is phosphorylated into tenofovir diphosphate by cellular enzymes
This inhibits the effect of HIV 1 RT by competing with natural substrate (deoxyadenosine 5â€™-triphosphate), fusing into DNA, by DNA chain termination.
Tenof EM is rapidly absorbed with peak plasma concentration occurring 1-2 hours.
Tenof EM is highly bound to the human plasma protein over the range of 0.02-200 Î¼g/mL (Emtricitabine) and 0.01â€“25 Î¼g/mL (tenofovir).
Tenof EM is metabolized and its metabolites are released through urine.
Excretion of tablet Tenof EM occurs through urine.
The mean plasma termination half life period of tablet Tenof EM is Emtricitabine 10 hours (7.4-18.0); tenofovir 17 hours (12.0-25.7).
The bioavailability of both Emtricitabine is 92% and tenofovir is 25%
Indication of Tenof-EM
Tenof EM is primarily indicated for;
Chronic hepatitis B virus infection
Dose & Dosage's of Tenof-EM
Tenof EM, the dosage prescribed for the treatment of HIV infection;
One tablet should be taken as a single dose.
Tenof EM is taken orally with or without food
Side Effects of Tenof-EM
The common effects caused by Tablet Tenof EM;
Gastro intestinal: diarrhea, nausea, vomiting
General: injection site reaction, fatigue
Infections: sinusitis, upper respiratory infection, throat infection
Central nervous system: head ache, dizziness, psychiatric disorders, depression, and sleeplessness
* Common effects
* Fever, chills
* Pain during urination
* Chest pain
* Skin discoloration
* Numbness, burning or tingling (hands, arm, feet)
* Muscle stiffness
~ Severe Acute Exacerbations of Hepatitis B
~ New Onset or Worsening Renal Impairment.
~ Lactic Acidosis/Severe Hepatomegaly with Steatosis
~ Bone Effects of Tenofovir DF.
~ Immune Reconstitution Syndrome.
Some other effects:
Anorexia, Dyspepsia, asthenia, dizziness, fatigue, headache, rash, hypophosphatemia, raised liver enzymes, hepatitis, renal effects (e.g. nephritis, nephrogenic diabetes insipidus, proximal renal tubulopathy, renal failure), bone pain, osteomalacia, muscle weakness, myopathy. Rarely, raised serum amylase levels, pancreatitis, and rhabdomyolysis.
Contraindication of Tenof-EM
Tenof EM should not be used in persons with unknown or positive 1 status.
Tenof EM not used as monotherapy, it is used with other retroviral medicine.
Hypersensitivity in lactation
Drug Interaction of Tenof-EM
Coadminstration of tablet Tenof EM with atazanavir, plasma concentration of Tenof EM increased and the plasma concentration of atazanavir decreased.
Some of medicines cause drug interactions;
Ritonavir boosted Lopinavir
Nephrotoxicity drugs like; cidofovir, acyclovir, valaciclovir etc
Precaution of Tenof-EM
Caution should be taken while using tablet Tenof EM, if patient having
Hepatomegaly or other liver problems
Usage & Safety profile of Tenof-EM Pregnancy & Lactation
The pregnancy category of Tablet Tenof EM is comes under category B
Tenof EM should not preferred for pregnant women or become pregnant.
Storage of Tenof-EM
Tenof EM should be stored in a cool place
Keep away from heat, moisture, and light.