What are the possible side effects of Malarone?

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 bleeding (nose, mouth, vagina, or rectum), purple or red pinpoint spots under your skin.

Less serious side effects may include:
mild stomach pain or upset stomach;
mild diarrhea;
headache;
mild itching;
weakness; or
dizziness.

This is not a complete list of side effects and others may occur