On this page · 9 sections

Cipro I.V. (injection)

Generic name: ciprofloxacin (injection)

Brand names: Cipro I.V. injection

Last updated November 2, 2026 0 views
Share

What is Cipro I.V.?

Cipro I.V. is an antibiotic that belongs to the fluoroquinolone class. It helps fight bacteria in the body. This medicine is used to treat various bacterial infections. It is also used for people who have been exposed to anthrax or certain types of plague.

Fluoroquinolone antibiotics can cause serious or disabling side effects that may not go away. Cipro I.V. should only be used for infections that cannot be treated with a safer antibiotic.

Cipro I.V. may also be used for reasons not mentioned in this medication guide.

This section was rewritten for readability and reviewed for meaning.

Warnings

Cipro I.V. can lead to serious side effects, including tendon issues, nerve damage, significant mood or behavior changes, or low blood sugar.

Stop taking this medicine and call your doctor right away if you experience symptoms such as: headache, hunger, irritability, numbness, tingling, burning pain, confusion, agitation, paranoia, memory or concentration problems, thoughts of suicide, or sudden pain or movement issues in any of your joints.

In rare cases, Cipro I.V. may harm your aorta, which could result in severe bleeding or death. Seek emergency medical help if you have intense and ongoing pain in your chest, stomach, or back.

This section was rewritten for readability and reviewed for meaning.

Before taking this medicine

You should not use Cipro I.V. if you are allergic to it, or if:

  • you are also taking tizanidine; or
  • you are allergic to other fluoroquinolones (gemifloxacin, levofloxacin, moxifloxacin, norfloxacin, ofloxacin, and others).

Cipro I.V. may cause swelling or tearing of a tendon (the fiber that connects bones to muscles in the body), especially in the Achilles' tendon of the heel. This can happen during treatment or up to several months after you stop using this medicine. Tendon problems may be more likely in certain people (children and older adults, or people who use steroid medicine or have had an organ transplant).

Tell your doctor if you have ever had:

  • tendon problems, bone problems, arthritis or other joint problems (especially in children);
  • blood circulation problems, aneurysm, narrowing or hardening of the arteries;
  • heart problems, high blood pressure;
  • a genetic disease such as Marfan syndrome or Ehler's-Danlos syndrome;
  • diabetes;
  • a muscle or nerve disorder, such as myasthenia gravis;
  • liver disease;
  • kidney disease;
  • a seizure, head injury, or brain tumor;
  • long QT syndrome (in you or a family member); or
  • low levels of potassium (hypokalemia) or low levels of magnesium (hypomagnesemia) in your blood.

It is not known whether Cipro I.V. will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

Do not breastfeed while using this medicine, and for at least 2 days after your last dose.

If you are taking Cipro I.V. for inhalation anthrax, your healthcare provider will decide whether you should breastfeed while taking this medicine.

This section was rewritten for readability and reviewed for meaning.

Cipro I.V. side effects

Get emergency medical help if you have signs of an allergic reaction (hives, difficulty breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning in your eyes, skin pain, red or purple skin rash that spreads and causes blistering and peeling).

Cipro I.V. can cause serious side effects, including tendon problems, nerve side effects (which may cause permanent nerve damage), serious mood or behavior changes (after just one dose), or low blood sugar (which can lead to coma).

Stop using Cipro I.V. and call your doctor immediately if you have:

  • low blood sugar--headache, hunger, sweating, irritability, dizziness, nausea, fast heart rate, or feeling anxious or shaky;
  • nerve symptoms in your hands, arms, legs, or feet--numbness, weakness, tingling, burning pain;
  • serious mood or behavior changes--nervousness, confusion, agitation, paranoia, hallucinations, memory problems, trouble concentrating, thoughts of suicide; or
  • signs of tendon rupture--sudden pain, swelling, bruising, tenderness, stiffness, movement problems, or a snapping or popping sound in any of your joints (rest the joint until you receive medical care or instructions).

In rare cases, Cipro I.V. may cause damage to your aorta, the main blood artery of the body. This could lead to dangerous bleeding or death. Get emergency medical help if you have severe and constant pain in your chest, stomach, or back.

Also, stop using Cipro I.V. and call your doctor immediately if you have:

  • severe stomach pain with diarrhea that is watery or bloody;
  • fast or pounding heartbeats, fluttering in your chest, shortness of breath, and sudden dizziness (like you might pass out);
  • any skin rash, no matter how mild;
  • muscle weakness, breathing problems;
  • little or no urination;
  • jaundice (yellowing of the skin or eyes); or
  • increased pressure inside the skull--severe headaches, ringing in your ears, dizziness, nausea, vision problems, pain behind your eyes.

Common side effects of Cipro I.V. may include:

  • nausea, vomiting, diarrhea;
  • rash; or
  • abnormal liver function tests.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

This section was rewritten for readability and reviewed for meaning.

How is Cipro I.V. given?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.

Cipro I.V. is given as an infusion into a vein. A healthcare provider will give your first dose and may teach you how to properly use the medication by yourself.

Read and carefully follow any Instructions for Use provided with your medicine. Do not use Cipro I.V. if you don't understand all instructions for proper use. Ask your doctor or pharmacist if you have questions.

Cipro I.V. must be injected slowly, over at least 60 minutes.

Cipro I.V. is usually given for up to 14 days. Some infections may need to be treated for 4 to 8 weeks. Anthrax exposure is usually treated for 60 days.

Follow your doctor's dosing instructions very carefully.

Use this medicine for the full prescribed length of time, even if your symptoms quickly improve. Skipping doses can increase your risk of infection that is resistant to medication. Cipro I.V. will not treat a viral infection such as the flu or a common cold.

If you use this medicine long-term, you may need frequent medical tests.

Store at room temperature away from moisture, heat, and light. Do not freeze.

What happens if I miss a dose?

Call your doctor for instructions if you miss a dose of Cipro I.V. (injection).

This section was rewritten for readability and reviewed for meaning.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Using caffeine while using Cipro I.V. can increase the effects of the caffeine.

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, call your doctor before using anti-diarrhea medicine.

Cipro I.V. could make you sunburn more easily. Avoid sunlight or tanning beds. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors. Tell your doctor if you have severe burning, redness, itching, rash, or swelling after being in the sun.

Avoid driving or hazardous activity until you know how Cipro I.V. will affect you. Your reactions could be impaired.

This section was rewritten for readability and reviewed for meaning.

What other drugs will affect Cipro I.V.?

Tell your doctor about all your other medicines, especially:

  • cyclosporine, methotrexate, phenytoin, probenecid, ropinirole, sildenafil, theophylline, or zolpidem;
  • a blood thinner (warfarin, Coumadin, Jantoven);
  • a diuretic or "water pill";
  • heart rhythm medication;
  • insulin or oral diabetes medicine (check your blood sugar regularly);
  • medicine to treat depression or mental illness;
  • products with caffeine;
  • steroid medicine (such as prednisone); or
  • NSAIDs (nonsteroidal anti-inflammatory drugs)--ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib, diclofenac, indomethacin, meloxicam, and others.

This list is not complete. Other drugs may affect Cipro I.V., including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

This section was rewritten for readability and reviewed for meaning.

Common questions about Cipro I.V.

What is the best antibiotic to treat a sinus infection?
An acute sinus infection, also called sinusitis, is usually caused by a virus. Most cases of sinusitis clear up within 10 days. Antibiotics are not needed for acute viral sinusitis. If a secondary bacterial infection should develop, one treatment of choice is amoxicillin-clavulanate (Augmentin). Continue reading
What are the best antibiotics for boils?
There is no single best antibiotic for a boil, and many boils do not need one at all. Draining the boil is the main treatment. When an antibiotic is added, the usual choices are cephalexin, dicloxacillin, trimethoprim-sulfamethoxazole (Bactrim), doxycycline, or clindamycin. Your provider picks one based on whether MRSA is likely, how sick you are, where the boil is, and your allergies. Continue reading
What happens if antibiotics don’t work for UTI?
If an antibiotic does not fully treat your UTI, the bacteria may be resistant and the infection can get worse. You may need more testing or a different antibiotic. A bladder infection can spread to the kidneys or bloodstream, causing a serious medical emergency. Contact your healthcare provider if your symptoms do not improve. Continue reading
How long does Cipro (ciprofloxacin) take to work?
Although ciprofloxacin starts working within hours of taking it, you may not notice an improvement in your symptoms for 2 to 3 days. For some infections, such as osteomyelitis (a bone infection), it may take up to a week before you show any improvement. Continue reading
What types of infections does Cipro (ciprofloxacin) treat?
Cipro (ciprofloxacin), a fluoroquinolone antibiotic, is used to treat a wide range of bacterial infections, including certain skin, bone, joint, abdominal, prostate, respiratory and genitourinary tract infections. Cipro is also used to treat people who have been exposed to anthrax or certain types of plague. Cipro should be used only to treat or prevent susceptible bacterial infections to help prevent the development of drug-resistant bacteria and to maintain drug effectiveness. Continue reading
How long does ciprofloxacin stay in your system when finished?
Ciprofloxacin is typically eliminated from your system within 22 hours after your last dose, assuming normal kidney function. The drug has a serum elimination half-life of about 4 hours. It generally takes 5.5 half-lives for a drug to be fully cleared, so ciprofloxacin is out of the body in approximately 20–24 hours. Continue reading
Can I use Cipro (ciprofloxacin) for bacterial vaginosis?
No, Cipro (ciprofloxacin) is not typically used to treat bacterial vaginosis (BV). BV is usually treated with antibiotics that specifically target the types of bacteria involved, such as Metronidazole and Clindamycin. Continue reading
Can you crush Cipro (ciprofloxacin) tablets and mix with food?
You may crush immediate-release cipro tablets if necessary, but it’s not ideal. Crushing can affect taste and dosing accuracy, especially if mixed with food and not fully consumed. This may reduce the antibiotic’s effectiveness. Continue reading

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
General medicine information Consumer-friendly language

Content is provided for education and is not medical advice. See our medical disclaimer.