Unitro 100mg contains nitrofurantoin, an antibiotic used primarily to treat urinary tract infections. Like all medications, it may cause side effects. Most individuals tolerate it well, but some may experience mild to serious reactions[1].
Common side effects:
- Nausea and vomiting[1]
- Loss of appetite[7]
- Headache[7]
- Dizziness or feeling off-balance[7]
- Stomach pain[7]
- Diarrhea[7]
- Brown or dark yellow urine (harmless and expected)[3]
- Flatulence (passing gas)[7]
- Drowsiness or weakness[7]
Rare but serious side effects:
- Lung problems, including fever, shortness of breath, cough, and chest pain[1]
- Liver damage (hepatotoxicity), symptoms include itching, yellowing of skin or eyes, dark urine, pale stools, or upper right abdominal pain[5]
- Nerve problems (neuropathy), with numbness, tingling, or muscle weakness[5]
- Severe allergic reactions (anaphylaxis), such as swelling of face/tongue, difficulty breathing, skin rash, or hives[3]
- Hemolytic anemia (damage to red blood cells), with weakness, pale skin, or tiredness[8]
- Serious skin reactions: blistering, peeling, or swelling[8]
When to seek immediate medical attention:
- Difficulty breathing or chest pain[3]
- Sudden swelling of lips, mouth, throat, or tongue[3]
- Severe abdominal pain, vomiting blood, or blood in stool[8]
- Yellowing of your eyes/skin, or dark urine with pale stools[5]
- Numbness, tingling, or muscle weakness[5]
If you notice any worrisome side effects, contact your healthcare provider right away. This is not a complete list of possible side effects. Always consult your doctor or pharmacist for comprehensive medical advice.
References
- [1] Nitrofurantoin (Macrobid, Macrodantin, and others) – WebMD
- [3] Side effects of nitrofurantoin – NHS
- [5] Nitrofurantoin: Side effects, dosage, uses, and more – Medical News Today
- [7] 10 Nitrofurantoin Side Effects You Should Know About – GoodRx
- [8] Nitrofurantoin (oral route) – Side effects & dosage – Mayo Clinic