Vomit, bloated, headache, dizziness, insomnia, shiver.
Rare: Tendon cracking, arthralgia (the symptoms can be cure), QT prolongation.
Rare: Tachycardia; Unknown frequency: Arrhythmia ventricular and torsade de pointes (dominated by the patients with QT prolongation risk factor), electrocardiogram QT prolonged.
Lymphatic and blood system disorders:
Uncommon: Leukopenia, eosinophilia; Rare: Thrombocytopenia, neutropenia; Very rare: Agranulocytosis; Unknown frequency: Pancytopenia, hemolytic anemia.
Uncommon: Dizziness, headache, drowsiness; Rare: Convulsion, tremor, paresthesia; Very rare: Sensory or sensorimotor peripheral neuropathy, dysgeusia including agesia, parosmia including anosmia.
Very rare: Vision disorder.
Hearing impairment and labyrinth disorder:
Uncommon: Vertigo; Very rare: Hearing impairment; Unknown: Tinnitus.
Rare: Bronchospasm, dyspnea; Very rare: Pneumonitis allergic.
Gastrointestinal tract disorder:
Common: Diarrhea, nausea; Uncommon: Vomit, abdominal pain, dyspepsia, bloated, constipated; Rare: In a very rare case, hemorrhagic diarrhea may show an indication of enterocolitis including pseudomembrane colitis.
Renal function and urinary tract disorder:
Uncommon: Blood creatinine elevation; Rare: Acute renal failure (due to interstitials nephritis).
Skin and subcutaneous tissue disorder:
Uncommon: Rash, pruritus; Rare: Urticaria; Very rare: Angioneurotic edema, photosensitivity reaction; Unknown: Toxic epidermal necrolysis, Steven-Johnson syndrome, multiforme erythema, hyperhidrosis, sometimes Mucocutaneous reaction might happen even after first dose administration.
Musculoskeletal and connective tissue disorders:
Rare: Tendon disorder including tendinitis (Achilles tendon), arthralgia, myalgia; Very rare: Tendon rupture. The side effects may be happened in 48 hours and act bilaterally, may cause muscle weakness, especially to the patient with myasthenia gravis; Unknown: Rhabdomyolysis.
Metabolism and nutrition disorder:
Uncommon: Anorexia; Very rare: Hypoglycemia, especially to patient with diabetes.
Infection and infestation:
Uncommon: Fungal infection.
: Uncommon: Asthenia; Very rare: Pyrexia; Unknown: Pain (including back pain, neck pain and extremities pain).
Immune system disorder:
Very rare: Anaphylactic shock.
Anaphylactic reaction or anaphylactoid might be perform even after the first administration; Unknown: Hypersensitivity.
Liver function disorder:
Common: Increased bilirubin; Very rare: Hepatitis; Unknown: Jaundice and severe liver injury, including acute liver failure, which can be happened by consuming levofloxacin especially in patient with severe illness.
Uncommon: Insomnia, nervousness; Rare: Psychotic disorder, depression, confusion state, agitation, anxious; Very rare: Self-harmed psychotic reaction including suicidal thoughts and action, hallucination.
Another adverse reaction related with fluoroquinolone usage
: Extrapyramidal symptoms and another muscle tissues disorder, hypersensitive vasculitis, Porphyria attacks in patients with porphyria.