After administration of a single dose of Fosfomycin trometamol, the most common side effect are those which effect the gastrointestinal tract, primarily diarrhoea.
The following frequency criteria are used as the basis for evaluating undesirable effects: very common (>1/10); common (>1/100 to 1/10); uncommon (>1/1000 to 1/100); rare (>1/10,000 to 1/1000); very rare (<1/10,000); not common: (cannot be estimated from the available data).
Infections and infestations: Common: Vulvovaginitis.
Immune disorders: Not known: Anaphylactic reactions including anaphylactic shock, hypersensitivity (see Precautions).
Nervous system disorders: Common: headache, dizziness.
Gastrointestinal disorders: Common: Diarrhoea, nausea, dyspepsia, abdominal pain. Uncommon: vomiting.
Not known: Antibiotic-associated colitis (see Precautions).
Skin and subcutaneous tissue disorders: Uncommon: Rash, urticaria, pruritus. Not known: Angioedema.