Side Effects

Drug information provided by: Merative, Micromedex®

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:

Less common or rare

  1. Bluish discoloration or flushing or redness of skin (occurring together with other effects listed in this section)
  2. coughing, shortness of breath, troubled breathing, tightness in chest, or wheezing
  3. difficulty in swallowing
  4. dizziness or feeling faint (severe)
  5. hive-like swellings (large) on eyelids, face, lips, or tongue
  6. skin rash, itching, or hives
  7. stuffy nose (occurring together with other effects listed in this section)


  1. Bleeding or crusting sores on lips
  2. chest pain
  3. fever with or without chills
  4. red, thickened, or scaly skin
  5. sores, ulcers, or white spots in mouth (painful)
  6. sore throat (unexplained)
  7. tenderness, burning, or peeling of skin

Symptoms of overdose

  1. Anxiety, confusion, excitement, irritability, nervousness, restlessness, or trouble in sleeping (severe, especially with products containing caffeine)
  2. convulsions (seizures, with products containing caffeine)
  3. diarrhea (severe or continuing)
  4. dizziness, lightheadedness, drowsiness, or weakness (severe)
  5. frequent urination (for products containing caffeine)
  6. hallucinations (seeing, hearing, or feeling things that are not there)
  7. increased sensitivity to touch or pain (for products containing caffeine)
  8. increased thirst
  9. muscle trembling or twitching (for products containing caffeine)
  10. nausea or vomiting (severe or continuing), sometimes with blood
  11. ringing or buzzing in ears (continuing) or hearing loss
  12. seeing flashes of "zig-zag" lights (for products containing caffeine)
  13. slow, fast, or irregular heartbeat
  14. slow, fast, irregular, or troubled breathing
  15. slurred speech
  16. staggering
  17. stomach pain (severe)
  18. uncontrollable flapping movements of the hands, especially in elderly patients
  19. unusual movements of the eyes
  20. vision problems

Check with your doctor as soon as possible if any of the following side effects occur:

Less common or rare

  1. Bloody or black, tarry stools
  2. bloody urine
  3. confusion or mental depression
  4. muscle cramps or pain
  5. pinpoint red spots on skin
  6. swollen or painful glands
  7. unusual bleeding or bruising
  8. unusual excitement (mild)

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:

More common

  1. Bloated or "gassy" feeling
  2. dizziness or lightheadedness (mild)
  3. drowsiness (mild)
  4. heartburn or indigestion
  5. nausea, vomiting, or stomach pain (occurring without other symptoms of overdose)

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.

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