Drug information

What is moxifloxacin hydrochloride?What is moxifloxacin hydrochloride?

What is moxifloxacin hydrochloride?

Moxifloxacin hydrochloride is an antibacterial prescription medicine approved by the U.S. Food and Drug Administration (FDA) for the treatment of certain bacterial infections, such as community-acquired pneumonia, acute worsening of chronic bronchitis, acute sinus infections, plague, and skin and abdominal infections.

Community-acquired pneumonia, a bacterial respiratory infection, can be an opportunistic infection (OI) of HIV. An OI is an infection that occurs more frequently or is more severe in people with weakened immune systems —such as people with HIV—than in people with healthy immune systems. To learn more about OIs, read the HIVinfo What is an Opportunistic Infection? fact sheet.

How is moxifloxacin hydrochloride used in people with HIV?How is moxifloxacin hydrochloride used in people with HIV?

How is moxifloxacin hydrochloride used in people with HIV?

The Guidelines for the Prevention and Treatment of Opportunistic Infections in Adults and Adolescents With HIV and/or the Guidelines for the Prevention and Treatment of Opportunistic Infections in Children With and Exposed to HIV include recommendations on the uses of moxifloxacin hydrochloride in people with HIV to:

Treat:

Prevent:

  • Disseminated MAC infection from recurring

The recommended uses may not always be consistent with FDA-approved uses of moxifloxacin hydrochloride. See the Adult and Pediatric Opportunistic Infection Guidelines for complete information on recommended uses of moxifloxacin hydrochloride in adults and children with HIV. Moxifloxacin hydrochloride may have other recommended uses not listed above.

What should I tell my health care provider before using moxifloxacin hydrochloride?What should I tell my health care provider before using moxifloxacin hydrochloride?

What should I tell my health care provider before using moxifloxacin hydrochloride?

Before using moxifloxacin hydrochloride, tell your health care provider:

  • If you are allergic to moxifloxacin hydrochloride, quinolone antibiotics, or any other medicines.
  • About any medical conditions you have or have had, including:
    • Myasthenia gravis (a disease that causes muscle weakness)
    • Tendon, bone, or joint problems, including rheumatoid arthritis
    • Liver or kidney problems
    • Central nervous system problems, including mental health problems, epilepsy, or seizures
    • Nerve problems, such as peripheral neuropathy
    • Diabetes or problems with low blood sugar (hypoglycemia)
    • Heart problems
    • Low potassium or low magnesium
    • Salt-restricted diet
  • About anything that could affect your ability to take medicines, such as difficulty swallowing pills, difficulty remembering to take pills, or any health conditions that may prevent your use of intravenous medicines.
  • If you are pregnant or plan to become pregnant. Talk to your health care provider about the risks and benefits of using moxifloxacin hydrochloride during pregnancy. The Guidelines for the Prevention and Treatment of Opportunistic Infections in Adults and Adolescents With HIV may include other recommendations on the use of moxifloxacin hydrochloride during pregnancy. Please refer to these guidelines for additional information.
  • If you are breastfeeding or plan to breastfeed. For mothers with HIV in the United States, the Guideline recommends speaking with your health care provider to discuss options for feeding your baby. Mothers with suppressed viral load have a less than 1% chance of transmitting HIV to their baby via their own milk. Although most medicines are safe to use while breastfeeding, some medicines should be avoided. Always let your health care provider know about all the medicines and supplements you are using before you start breastfeeding.
  • About other prescription and nonprescription medicines, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Moxifloxacin hydrochloride may affect the way other medicines or products work, and other medicines or products may affect how moxifloxacin hydrochloride works. Ask your health care provider if there are interactions between moxifloxacin hydrochloride and the other medicines you take.

How should I use moxifloxacin hydrochloride?How should I use moxifloxacin hydrochloride?

How should I use moxifloxacin hydrochloride?

Use moxifloxacin hydrochloride according to your health care provider’s instructions. Your health care provider will tell you how much moxifloxacin hydrochloride to use and when to use it.

It is important to complete the full prescribed course of treatment with moxifloxacin hydrochloride, even if you begin to feel better. If you stop using moxifloxacin hydrochloride too soon or skip doses, your infection may not be fully treated, and the bacteria may become harder to treat (resistant).

Before you start moxifloxacin hydrochloride and each time you get a refill, read any printed information that comes with your medicine.

What side effects can moxifloxacin hydrochloride cause?What side effects can moxifloxacin hydrochloride cause?

What side effects can moxifloxacin hydrochloride cause?

Moxifloxacin hydrochloride may cause side effects that can be mild or serious. To learn about possible side effects of moxifloxacin hydrochloride, see the FDA drug labels for moxifloxacin hydrochloride injection (solution) and tablet (film coated) or talk to your health care provider or pharmacist. Tell your health care professional if you have any side effect that bothers you or that does not go away. Your health care professional may be able to tell you about ways to prevent or reduce some side effects.

You may report side effects to FDA at 1-800-FDA-1088 (1-800-332-1088) or online.

How should moxifloxacin hydrochloride be stored?How should moxifloxacin hydrochloride be stored?

How should moxifloxacin hydrochloride be stored?

  • Store moxifloxacin hydrochloride tablets at room temperature between 68°F to 77°F (20°C to 25°C) and away from moisture (humidity).
  • Store moxifloxacin hydrochloride injection solution bags at room temperature between 68°F to 77°F (20°C to 25°C). Keep the moxifloxacin hydrochloride injection bag in the outer bag and away from light until ready to use. Do not refrigerate.
  • Do not use moxifloxacin hydrochloride if the original seal over the medicine container is broken or missing.
  • Throw away moxifloxacin hydrochloride that is no longer needed or expired (out of date). Follow FDA guidelines on how to safely dispose of unused medicine. For information on disposing of needles and other sharps, please refer to these guidelines or ask your health care provider or pharmacist.
  • Keep moxifloxacin hydrochloride and all medicines out of reach of children.

Where can I find more information about moxifloxacin hydrochloride?Where can I find more information about moxifloxacin hydrochloride?

Where can I find more information about moxifloxacin hydrochloride?

Last Reviewed: June 30, 2025