Fosfomycin 3Gm Sachet an antibiotic used to treat bacterial infections, may cause side effects. Common side effects include gastrointestinal symptoms like diarrhea, nausea, and abdominal pain. Allergic reactions such as rash or itching can occur but are less common. Rare but serious side effects may include severe diarrhea, bloody stools, or signs of a more severe allergic reaction. It's important to inform healthcare providers of any adverse reactions. Fosfomycin Uses is generally considered safe but, like all medications, should be used under medical supervision. Patients with known allergies or kidney issues should exercise caution, and consultation with a healthcare professional is recommended for personalized guidance.