Lariam Side Effects
What should I watch for?
Tell your doctor or health care professional if your symptoms do not start to get better in a few days. If you are taking this medicine for a long time, visit your doctor or health care professional for regular checks. If you notice any changes in your vision see your eye doctor for an eye exam.
If you get a fever during or after you start taking this medicine, do not treat yourself. Contact your doctor or health care professional immediately.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.
While in areas where malaria is common, you should take steps to prevent being bit by mosquitos. This includes staying in air-conditioned or well-screened rooms to reduce human-mosquito contact, sleep under mosquito netting, preferably one with pyrethrum-containing insecticide, wear long-sleeved shirts or blouses and long trousers to protect arms and legs, apply mosquito repellents containing DEET to uncovered areas of skin, and use a pyrethrum-containing flying insect spray to kill mosquitos.
If you are currently taking or have taken this medicine in the past 3 weeks, you should not take halofantrine (another malarial drug). Dangerous heart side effects may occur. Talk to your health care provider.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Aching joints and muscles
blistering, loosening, peeling, or redness of the skin
chest pain or discomfort
cough or hoarseness
hallucinations (seeing, hearing, or feeling things that are not there)
irregular, pounding, slow, or fast heartbeat or pulse
lower back or side pain
painful or difficult urination
pinpoint red spots on the skin
red or irritated eye
sores, ulcers, or white spots in the mouth or on the lips
swelling of the ankles, feet, or lower legs
unusual bleeding or bruising
unusual tiredness or weakness
Incidence not known
Blurred or loss of vision
continuing ringing or buzzing or other unexplained noise in the ears
disturbed color perception
feeling of constant movement of self or surroundings
halos around lights
loss of balance
loss of bladder control
muscle spasm or jerking of all extremities
overbright appearance of lights
sensation of spinning
severe or continuing headache
sudden loss of consciousness
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
loss of appetite
Loss of hair
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.