Bioequivalence Study of Losartan Potassium and Hydrochlorothiazide (100 mg / 25 mg Tablet) [Test Formulation, Torrent Pharmaceuticals Ltd., India] Versus Hyzaar® (100 mg / 25 mg Tablet) [Reference Formulation, Merck & Co., Inc., USA] in Healthy Human Volunteers Under Fasting Conditions.

• Bioequivalence based AUC parameters
• Bioequivalence based on Cmax

Objective:

to compare the single dose bioavailability of Torrent's Losartan Potassium and Hydrochlorothiazide Tablets 1 × 100/25mg and Hyzaar® Tablets 1 × 100/25mg of Merck & Co., Inc.

Study Design:

Randomized, Two-Way Crossover, Single-Dose, Open-Label in 70 healthy human adult subjects

Inclusion Criteria:

• The volunteers were excluded from the study based on the following criteria:

  • Sex: male.
  • Age: 18 - 45 years. .
  • Volunteer with BMI of 18-27 (inclusive both) kg/m2 with minimum of 50 kg weight.
  • Healthy and willing to participate in the study.
  • Volunteer willing to adhere to the protocol requirements and to provide written informed consent.
  • Non-smokers or smoker who smokes less than 10 cigarettes per day

Exclusion Criteria:

• The volunteers were excluded from the study based on the following criteria:

  • Clinically relevant abnormalities in the results of the laboratory screening evaluation.
  • Clinically significant abnormal ECG or Chest X-ray.
  • Systolic blood pressure less than 100 mm Hg or more than 140 mm Hg and diastolic blood pressure less than 60 mm Hg or more than 90 mm Hg.
  • Pulse rate less than 50/minute or more than 100/minute.
  • Oral temperature less than 95°P or more than 98.6°P.
  • Respiratory rate less than 12/minute or more than 20/minute
  • History of allergy to the test drug or any drug chemically similar to the drug under investigation.
  • History of alcohol or drug abuse
  • Positive breath alcohol test
  • Recent history of kidney or liver dysfunction.
  • History of consumption of prescribed medication since last 14 days or OTC medication since last 07 days before beginning of the study.
  • Volunteers suffering from any chronic illness such as arthritis, asthma etc.
  • History of heart failure.
  • HIV, HCV, HBsAg positive volunteers.
  • Opiate, tetra hydrocannabinol, amphetamine, barbiturates, benzodiazepines, Cocaine positive volunteers based on urine test.
  • Volunteers suffering from any psychiatric (acute or chronic) illness requiring medications.
  • Administration of any study drug in the period 0 to 3 months before entry to the study.
  • History of significant blood loss due to any reason, including blood donation in the past 3 months.
  • History of pre-existing bleeding disorder.
  • Existence of any surgical or medical condition, which, in the judgment of the chief investigator and/or clinical investigator/physician, might interfere with the absorption, distribution, metabolism or excretion of the drug or likely to compromise the safety of volunteers.
  • Inability to communicate or co-operate due to language problem, poor mental development or impaired cerebral function.