MEGESTROL ACETATE

Megestrol Acetate Oral Suspension, USP contains megestrol acetate, a synthetic derivative of the steroid hormone, progesterone. Megestrol acetate is a white, crystalline solid chemically designated as 17-Hydroxy-6-methylpregna-4,6-diene-3,20-dione acetate. Solubility at 37°C in water is 2 mcg per mL, solubility in plasma is 24 mcg per mL. Its molecular weight is 384.52. The chemical formula is C 24 H 32 O 4 and the structural formula is represented as follows: Megestrol acetate oral suspension is supplied as an oral suspension containing 40 mg of micronized megestrol acetate per mL. Megestrol acetate oral suspension contains the following inactive ingredients: citric acid, lemon-lime flavor (propylene glycol), ethyl alcohol, natural flavor), propylene glycol, purified water, sodium benzoate, sodium citrate, surose, and xanthan gum. Molecular structure of Megestrol

Megestrol acetate oral suspension is indicated for the treatment of anorexia, cachexia, or an unexplained, significant weight loss in patients with a diagnosis of acquired immunodeficiency syndrome (AIDS).

The recommended adult initial dosage of megestrol acetate oral suspension is 800 mg/day (20 mL/day). Shake container well before using. In clinical trials evaluating different dose schedules, daily doses of 400 and 800 mg/day were found to be clinically effective.

History of hypersensitivity to megestrol acetate or any component of the formulation. Known or suspected pregnancy.

Adverse events which occurred in at least 5% of patients in any arm of the two clinical efficacy trials and the open trial are listed below by treatment group. All patients listed had at least one post baseline visit during the 12 study weeks. These adverse events should be considered by the physician when prescribing megestrol acetate oral suspension. ADVERSE EVENTS % of Patients Reporting Trial 1 (N = 236) Trail 2 (N=87) Open Label Trial Megestrol Acetate mg/day No. of Patients Placebo 0 N=34 100 N=68 400 N=69 800 N=65 Placebo 0 N=38 800 N=49 1200 N=176 Diarrhea 15 13 8 15 8 6 10 Impotence 3 4 6 14 0 4 7 Rash 9 9 4 12 3 2 6 Flatulence 9 0 1 9 3 10 6 Hypertension 0 0 0 8 0 0 4 Asthenia 3 2 3 6 8 4 5 Insomnia 0 3 4 6 0 0 1 Nausea 9 4 0 5 3 4 5 Anemia 6 3 3 5 0 0 0 Fever 3 6 4 5 3 2 1 Libido Decreased 3 4 0 5 0 2 1 Dyspepsia 0 0 3 3 5 4 2 Hyperglycemia 3 0 6 3 0 0 3 Headache 6 10 1 3 3 0 3 Pain 6 0 0 2 5 6 4 Vomiting 9 3 0 2 3 6 4 Pneumonia 6 2 0 2 3 0 1 Urinary Frequency 0 0 1 2 5 2 1 Adverse events which occurred in 1% to 3% of all patients enrolled in the two clinical efficacy trials with at least one follow-up visit during the first 12 weeks of the study are listed below by body system. Adverse events occurring less than 1% are not included. There were no significant differences between incidence of these events in patients treated with megestrol acetate and patients treated with placebo. Body as a Whole Abdominal pain, chest pain, infection, moniliasis and sarcoma Cardiovascular System Cardiomyopathy and palpitation Digestive System Constipation, dry mouth, hepatomegaly, increased salivation and oral moniliasis Hemic and Lymphatic System Leukopenia Metabolic and Nutritional LDH increased, edema and peripheral edema Nervous System - paresthesia, confusion, convulsion, depression, neuropathy, hypesthesia and abnormal thinking Respiratory System Dyspnea, cough, pharyngitis and lung disorder Skin and Appendages Alopecia, herpes, pruritus, vesiculobullous rash, sweating and skin disorder Special Senses Amblyopia Urogenital System Albuminuria, urinary incontinence, urinary tract infection and gynecomastia Postmarketing Postmarketing reports associated with megestrol acetate oral suspension include thromboembolic phenomena including thrombophlebitis and pulmonary embolism and glucose intolerance (see WARNINGS and PRECAUTIONS ). To report SUSPECTED ADVERSE REACTIONS, contact PAI Pharma at 1-800-845-8210 or FDA at 1-800-FDA-1088 or www.fds.gov/medwatch .

Pharmacokinetic studies show that there are no significant alterations in pharmacokinetic parameters of zidovudine or rifabutin to warrant dosage adjustment when megestrol acetate is administered with these drugs. The effects of zidovudine or rifabutin on the pharmacokinetics of megestrol acetate were not studied. Megestrol acetate may interact with warfarin and increase International Normalized Ratio (INR). Closely monitor INR in patients taking megestrol acetate and warfarin.

STORAGE Store the oral suspension between 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature]. Protect from heat. Keep this and all drugs out of the reah of children. SPECIAL HANDLING Health HAzard Data There is no threshold limit value established by OSHA, NIOSH, OR ACGIH. Exposure or "overdose" at levels approaching recommended dosing levels could result in side effects described above (above WARNINGS and ADVERSE REACTIONS ). Women at risk of pregnancy shoul avoud such exposure. Distributed by: MAJOR ® PHARMACEUTICALS Indianapolis, IN 46268 R07/25