The daily dose should be taken at the same time each day with food or a milky drink. In the event of vomiting within 1 hour after dosing, a repeat dose should be taken.
Prevention of Malaria:
Prophylactic treatment with atovaquone and proguanil hydrochloride should be started 1 or 2 days before entering a malaria-endemic area and continued daily during the stay and for 7 days after return.
Adults:
One atovaquone and proguanil hydrochloride tablet (adult strength = 250 mg atovaquone/100 mg proguanil hydrochloride) per day.
Treatment of Acute Malaria:
Adults:
Four Atovaquone and proguanil hydrochloride tablets (adult strength; total daily dose 1 g atovaquone/400 mg proguanil hydrochloride) as a single dose daily for 3 consecutive days.
Patients with Renal Impairment:
Atovaquone and proguanil hydrochloride tablet should not be used for malaria prophylaxis in patients with severe renal impairment (creatinine clearance <30 mL/min). Atovaquone and proguanil hydrochloride tablet may be used with caution for the treatment of malaria in patients with severe renal impairment (creatinine clearance <30 mL/min), only if the benefits of the 3-day treatment regimen outweigh the potential risks associated with increased drug exposure (see CLINICAL PHARMACOLOGY: Special Populations: Renal Impairment). No dosage adjustments are needed in patients with mild (creatinine clearance 50 to 80 mL/min) and moderate (creatinine clearance 30 to 50 mL/min) renal impairment (see CLINICAL PHARMACOLOGY: Special Populations).
Patients with Hepatic Impairment:
No dosage adjustments are needed in patients with mild to moderate hepatic impairment. No studies have been conducted in patients with severe hepatic impairment (see CLINICAL PHARMACOLOGY: Special Populations: Hepatic Impairment).