Generic name: Cefixime.

Suprax is a cephalosporin antibiotic. It interferes with the production of certain biochemicals necessary for bacteria to sustain life.

Quick Facts About Suprax


Used to treat bacterial infections of the chest, ears, urinary tract, and throat, and for uncomplicated gonorrhea.

Suprax Dosage

Can take with or without food. Take with food if you have stomach upset. Food does slow down absorption rate. Use specially marked measuring spoon from pharmacy if taking liquid form. Shake liquid well before using. Finish entire prescription; otherwise infection may reappear.

  • Usual adult dose: for infections other than gonorrhea — 400 milligrams per day as a single dose or a 200-milligram tablet taken every 12 hours. May be prescribed lower dose if you have kidney disease. For uncomplicated gonorrhea — a single 400-milligram dose. Seniors — prescribed lower doses.
  • Usual child dose: 8 milligrams per 2.2 pounds of body weight per day. May give as a single dose or in 2 half doses every 12 hours, per doctor’s instructions. Children over 110 pounds or over 12 years are prescribed adult dose. Suspension form is prescribed for middle ear infection because it is generally more effective than the tablet form. Not prescribed for children under 6 months.
  • Missed dose: if taking 1 dose per day — take as soon as possible. Wait 10 to 12 hours before taking next dose, then go back to regular schedule. If you remember the next day, do not take missed dose; go back to regular schedule. If taking 2 doses per day — take as soon as possible, and take next dose in 5 to 6 hours. Then go back to regular schedule. If taking 3 doses per day—take as soon as possible, and take next dose in 2 to 4 hours. Then go back to regular schedule. Do not double doses.

Suprax Side Effects

Overdose symptoms:

blood in urine, diarrhea, nausea, upper abdominal pain, vomiting. If you suspect an overdose, immediately seek medical attention.

More common side effects: abdominal pain, gas, indigestion, loose stools, mild diarrhea, nausea, vomiting.

Less common Suprax side effects: colitis, dizziness, fever, headaches, hives, itching, skin rashes, vaginitis. Rare side effects: bleeding, decrease in urine output, seizures, severe abdominal or stomach cramps, severe diarrhea (sometimes with blood), shock, skin redness.


No Suprax drug interactions reported.

No known food/other substance interactions.

Special Cautions

If pregnant or planning to become pregnant, inform your doctor immediately. May appear in breast milk; could affect a nursing infant.

Seniors are prescribed lower doses to accommodate decreasing kidney function.

Follow doctor’s instructions carefully for children.

  • Inform your doctor before taking Suprax if allergic to any form of penicillin or cephalosporin antibiotics; at risk for extremely severe allergic reaction.
  • Suprax may cause false urine-sugar test results. If diabetic, inform your doctor that you are taking Suprax before being tested. Do not change diet or diabetes medication dosage unless directed by your doctor.
  • Doctor may test to verify that Suprax is effective against your particular infection. Do not share medication with others who have infections.
  • Tell your doctor before starting Suprax therapy if you have a history of stomach or intestinal disease such as colitis, or kidney disorder.
  • Immediately contact your doctor if you experience allergic symptoms.
  • Notify your doctor right away if your symptoms either do not improve or worsen.
  • If you experience nausea, vomiting, or severe diarrhea, talk with your doctor before taking diarrhea medication. Some such as Lomotil and paregoric may worsen or prolong diarrhea.
  • At risk for secondary infection if used when not directed by your doctor.

Note: provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Suprax side effects, please contact your healthcare provider