Fosfomycin (Oral Route)

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:

Rare

1. Blood in the urine
2. burning while urinating
3. cough or hoarseness
4. difficult or painful urination
5. fever or chills
6. lower back or side pain
7. painful or difficult urination

Incidence not known

1. Abdominal or stomach pain or tenderness
2. black, tarry stools
3. bloating
4. chest pain
5. clay-colored stools
6. constipation
7. dark urine
8. diarrhea
9. difficulty with swallowing
10. dizziness
11. fast heartbeat
12. headache
13. hives
14. itching
15. large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
16. light-colored stools
17. loss of appetite
18. nausea or vomiting
19. puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
20. rash
21. severe abdominal or stomach cramps and pain
22. shortness of breath
23. sores, ulcers, or white spots on the lips or in the mouth
24. swollen or painful glands
25. tightness in the chest
26. unpleasant breath odor
27. unusual bleeding or bruising
28. unusual tiredness or weakness
29. vomiting of blood
30. watery and severe diarrhea, which may also be bloody
31. wheezing
32. worsening of asthma
33. yellow eyes or skin

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. Itching of the vagina or genital area
2. pain during sexual intercourse
3. thick, white vaginal discharge with no odor or with a mild odor

Less common

1. Acid or sour stomach
2. back pain
3. belching
4. body aches or pain
5. congestion
6. dryness or soreness of the throat
7. heartburn
8. heavy bleeding
9. indigestion
10. lack or loss of strength
11. pain
12. painful menstruation
13. runny or stuffy nose
14. skin rash
15. sneezing
16. sore throat
17. stomach discomfort or upset
18. tender, swollen glands in the neck
19. trouble with swallowing
20. voice changes
21. weakness

Rare

1. Abnormal stools
2. absent missed or irregular menstrual periods
3. blindness
4. blue-yellow color blindness
5. blurred vision
6. burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
7. decreased vision
8. difficulty with moving
9. dry mouth
10. excess air or gas in the stomach or intestines
11. eye pain
12. full feeling
13. headache, severe and throbbing
14. joint pain
15. loss of appetite
16. muscle aching or cramping
17. muscle pains or stiffness
18. nervousness
19. passing gas
20. sleepiness or unusual drowsiness
21. sleeplessness
22. stopping of menstrual bleeding
23. swollen joints
24. swollen, painful, or tender lymph glands in the neck, armpit, or groin
25. trouble sleeping
26. unable to sleep
27. weight loss

Incidence not known

1. Hearing loss

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.

• Precautions

Portions of this document last updated: Feb. 01, 2024

Copyright: © Merative US L.P. 1973, 2024. All rights reserved. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.