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MALARONE®
(atovaquone and proguanil hydrochloride) Tablets

MALARONE®
(atovaquone and proguanil hydrochloride) Pediatric Tablets

DRUG DESCRIPTION

MALARONE (atovaquone and proguanil hydrochloride) is a fixed-dose combination of the antimalarial agents atovaquone and proguanil hydrochloride. The chemical name of atovaquone is trans-2-[4-(4-chlorophenyl)cyclohexyl]-3-hydroxy-1,4-naphthalenedione. Atovaquone is a yellow crystalline solid that is practically insoluble in water. It has a molecular weight of 366.84 and the molecular formula C22H19ClO3. The compound has the following structural formula:

Atovaquone Structural Formula Illustration

The chemical name of proguanil hydrochloride is 1-(4-chlorophenyl)-5-isopropyl-biguanide hydrochloride. Proguanil hydrochloride is a white crystalline solid that is sparingly soluble in water. It has a molecular weight of 290.22 and the molecular formula C11H16ClN5•HCl. The compound has the following structural formula:

Proguanil hydrochlorideStructural Formula Illustration

MALARONE (atovaquone and proguanil hcl) Tablets and MALARONE (atovaquone and proguanil hcl) Pediatric Tablets are for oral administration. Each MALARONE (atovaquone and proguanil hcl) Tablet contains 250 mg of atovaquone and 100 mg of proguanil hydrochloride and each MALARONE (atovaquone and proguanil hcl) Pediatric Tablet contains 62.5 mg of atovaquone and 25 mg of proguanil hydrochloride. The inactive ingredients in both tablets are low-substituted hydroxypropyl cellulose, magnesium stearate, microcrystalline cellulose, poloxamer 188, povidone K30, and sodium starch glycolate. The tablet coating contains hypromellose, polyethylene glycol 400, polyethylene glycol 8000, red iron oxide, and titanium dioxide.

What are the possible side effects of atovaquone and proguanil (Malarone, Malarone Pediatric)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have a serious side effect such as:

  • severe or uncontrolled vomiting or diarrhea;
  • fever, mouth sores;
  • problems with speech, balance, or walking;
  • severe skin rash;
  • nausea, stomach pain, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes); o
  • easy bruising, unusual...

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What are the precautions when taking atovaquone and proguanil hcl (Malarone)?

Before taking atovaquone/proguanil, tell your doctor or pharmacist if you are allergic to either atovaquone or proguanil; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: current diarrhea, current vomiting, kidney problems, liver problems, mental/mood problems, seizures.

This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.

Before having surgery, tell your doctor or dentist about all the products you use...

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Last reviewed on RxList: 10/7/2009
This monograph has been modified to include the generic and brand name in many instances.