Avelox is an antibiotic that is linked to rare but serious side effects like heart problems, aortic aneurysms, nerve damage, tendon injuries, life-threatening skin reactions, and more.

Most Serious Side Effects of Avelox

  • Heart failure
  • Heart valve problems
  • Heart attack
  • Hospitalization for heart problems within 60 days of taking Avelox
  • Aortic aneurysm (aortic dissection)
  • Peripheral neuropathy
  • Nerve damage
  • Stevens-Johnson Syndrome (SJS)
  • Toxic Epidermal Necrolysis (TEN)
  • Allergic skin reactions
  • Death

Most Common Side Effects of Avelox

In clinical trials, at least 3% of patients experienced nausea, diarrhea, headache, or dizziness. At least 1% of patients also experienced anemia, constipation, abdominal pain, indigestion, fever, low potassium (hypokalemia), and insomnia.

Other Side Effects of Avelox

  • Tendon rupture
  • Worsening of myasthensia gavis (disease that causes muscle weakness and breathing problems)
  • Bone, joint, and tendon problems (children)
  • Allergic reactions – tell your doctor if you have hives, trouble breathing or swallowing, swelling of the lips, face, or tongue, throat tightness, rapid heartbeat, fainting, yellowing of the skin or eyes, dark urine
  • Skin rash
  • Heart rhythm changes (QT interval prolongation, torsades de pointes)
  • Intestinal infection
  • Sensitivity to sunlight
  • Central Nervous System (CNS) side effects, including seizures — tell your doctor if you experience dizziness, changes in mood or behavior, seizures, hallucinations, restlessness, tremors, anxiety, depression, trouble sleeping, paranoia, suicidal thoughts or actions, nightmares, or vision loss
  • And more
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