Megestrol Acetate USP HORMONE & STEROID INDICATION Megenox is indicated for Anorexia-Cachexia\\r\\n Syndrome. DOSAGE AND ADMINISTRATION 800 mg (20 ml) or 4 tsp/ day. OR, AS DIRECTED BY PHYSICIAN. COMPOSITION Megenox: Each ml suspension contains 40 mg of Megestrol\\\\r\\\\nAcetate USP.