What should I watch for?
Visit your doctor or health care professional for regular checks on your progress. You will have regular blood checks. Do not change the brand of medicine unless directed by your doctor or health care professional.
If you get a cold or other infection while receiving this medicine, call your doctor or health care professional. Do not treat yourself. The medicine may decrease your body's ability to fight infections.
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. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.
The medicine can cause unusual growth of gum tissue and can make your gums bleed. Practice good oral hygiene, and be careful when brushing and flossing your teeth. See your dentist regularly.
Some products may contain alcohol. Ask your pharmacist or healthcare provider if this medicine contains alcohol. Be sure to tell all healthcare providers you are taking this medicine. Certain medicines, like metronidazole and disulfiram, can cause an unpleasant reaction when taken with alcohol. The reaction includes flushing, headache, nausea, vomiting, sweating, and increased thirst. The reaction can last from 30 minutes to several hours.
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:
Abdominal or stomach pain or tenderness
black, tarry stools
clay colored stools
decrease in urine output or decrease in urine-concentrating ability
headache, severe and throbbing
loss of appetite
muscle spasms (tetany) or twitching
painful or difficult urination
pounding in the ears
shakiness in the legs, arms, hands, or feet
shortness of breath
slow or fast heartbeat
sores, ulcers, or white spots on the lips or in the mouth
swelling of the feet or lower legs
trembling or shaking of the hands or feet
unusual bleeding or bruising
unusual tiredness or weakness
yellow eyes or skin
blood in the urine
blood in the vomit
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
pinpoint red spots on the skin
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
severe or continuing stomach pain
tightness in the chest
troubled breathing with exertion
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:
Abdominal or stomach discomfort
bleeding, tender, or enlarged gums
blemishes on the skin
increased hair growth, especially on the face
pain or tenderness around the eyes and cheekbones
stuffy or runny nose
burning feeling in the chest or stomach
burning, dry, or itching eyes
continuing ringing or buzzing or other unexplained noise in the ears
discharge or excessive tearing
feeling of warmth
redness of the face, neck, arms, and occasionally, upper chest
redness, pain, swelling of the eye, eyelid, or inner lining of the eyelid
swelling of the breasts or breast soreness in both females and males
Blurred or loss of vision
disturbed color perception
feeling sad or empty
halos around lights
loss of interest or pleasure
overbright appearance of lights
unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
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.