Cipro, or ciprofloxacin, is an antibiotic that doctors use to treat urinary tract infections (UTIs). However, ciprofloxacin may not be suitable for UTIs during pregnancy or for people with certain health risks.

For many people, Cipro is a safe treatment for a UTI. But it is not the only option.

The Food and Drug Administration (FDA) warns doctors about prescribing Cipro to certain people, as there is a potential for serious side effects.

Understanding how Cipro works and its possible side effects can help a person make an informed choice about their UTI treatment.

This article looks at Cipro for UTIs, its potential side effects, and when a person should see a doctor.

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Cipro is the brand name for ciprofloxacin, which is a type of antibiotic in the fluoroquinolone class.

Cipro is a broad-spectrum antibiotic, meaning it can treat various bacterial infections in the body.

Doctors may prescribe it to treat UTIs caused by bacteria because it is:

  • effective at killing bacteria
  • generally safe to use
  • relatively affordable

Cipro works by interfering with bacteria’s ability to replicate and grow. This action then kills the bacterial UTI.

Cipro is usually a second-line treatment for UTIs. Doctors may prescribe it for the following reasons:

  • for treating an uncomplicated UTI when other antibiotics are unsuitable
  • for treating a complicated UTI

A UTI may be complicated by things like kidney stones, an enlarged prostate, or a weakened immune system.

Although UTIs often respond well to Cipro, the FDA advises that the serious side effects may outweigh the benefits for people with uncomplicated UTIs who have other treatment options.

Tips for taking Cipro for a UTI

  • Follow instructions: Follow the doctor’s instructions exactly. Usually, the medication is an oral tablet or liquid, and the course of treatment lasts for up to 14 days.
  • Time your doses: Space doses apart evenly. If a doctor prescribes two tablets per day, try taking them every 12 hours. If you miss a dose, take it as soon as you remember, but if it is close to the next dose, do not double up.
  • Finish the course: Complete the full course of Cipro. Even if symptoms start to ease, it is essential to finish all the medication to eliminate the infection completely. This is to prevent antibiotic resistance.
  • Stay hydrated: When taking Cipro or any other antibiotic for a UTI, drink extra fluids and urinate often to help flush out the infection and speed up recovery.
  • Note side effects: If any side effects disrupt daily life, talk with a healthcare professional.

Antibiotic resistance and Cipro

The bacteria Escherichia coli, or E. coli, cause most UTIs.

E. coli resistance to ciprofloxacin is increasing, meaning that the medical community may need to restrict the use of this antibiotic.

Therefore, doctors recommend other therapies for treating UTIs whenever possible.

Although not common, Cipro may cause the following side effects:

  • nausea
  • diarrhea
  • nausea
  • vomiting
  • stomach pain
  • heartburn
  • vaginal itching
  • vaginal discharge
  • pale skin
  • unusual tiredness

They generally clear up without treatment once a person stops taking Cipro.

Less common side effects may include:

  • headache
  • pain in the extremities
  • pain in the feet
  • dizziness or fainting
  • difficulty sleeping
  • palpitations, flutters, or rapid heartbeat
  • high or low blood pressure
  • heart attack
  • fever
  • yellowing of the skin or eyes
  • dark urine
  • oral yeast infections
  • intestinal tears
  • gastrointestinal bleeding and blood in the stool

Rarely, Cipro can cause a severe allergic reaction. Anyone who experiences any of the following symptoms should seek immediate medical care:

  • hives, forming an itchy or irritating skin rash
  • trouble swallowing or breathing
  • swelling of the tongue, lips, or face
  • tightness in the throat

Cipro’s boxed warning

Fluoroquinolone antibiotics carry a boxed warning. This is the most serious warning from the FDA, and it means that they consider the drug to be potentially dangerous.

Cipro is associated with disabling and permanent side effects affecting the muscles, tendons, joints, nerves, and central nervous system.

Fluoroquinolones may worsen muscle weakness in patients with myasthenia gravis, so people with a known history should not take them.

If people have previously experienced or are currently experiencing the following issues, they should not take Cipro:

The FDA classifies Cipro as safe and effective for treating UTIs for most people, and states that the risk of serious side effects is low. However, they are still possible and occur often enough for the FDA to warn that doctors should only use fluoroquinolones — such as Cipro — when they have no other treatment options.

Cipro can interact with other medications. This could change how Cipro works and may lead to serious side effects.

Many drugs may interact with fluoroquinolones, such as Cipro, including:

People must always discuss current medications, vitamins, and supplements with a doctor before taking Cipro or another antibiotic.

Other drugs that doctors may recommend for UTIs include:

However, some of these options may also have issues with bacterial resistance. Researchers are currently investigating new treatment options for UTIs and other bacterial infections, including combination drug therapy, vaccines, and small molecules that attack specific functions in the bacteria.

If someone suspects they have a UTI, they should see a doctor. While Cipro is an effective option for many people with uncomplicated UTIs, some doctors recommend other treatment options first.

Anyone concerned about taking Cipro or its possible side effects should discuss them with a doctor. Most people can find the right solution for their UTI by working directly with a medical professional.

Cipro, or ciprofloxacin, is a type of antibiotic. It belongs to the fluoroquinolone class. These antibiotics can treat a wide range of bacterial infections.

Cipro may be an option for people with urinary tract infections (UTIs). However, the FDA has issued a boxed warning about the medication.

It may not be suitable for certain people, for example, those who are pregnant, trying to get pregnant, or breastfeeding. Like all medications, using Cipro can come with some side effects. These can range from mild to severe.

In some cases, doctors may prefer to use another antibiotic to treat UTIs.