Vancomycin (Firvanq) – Side Effects, Interactions, Uses, Dosage, Warnings

Vancomycin is an antibiotic. Oral (taken by mouth) vancomycin fights bacteria in the intestines.

Vancomycin is used to treat an infection of the intestines caused by Clostridium difficile, which can cause watery or bloody diarrhea. Vancomycin is also used to treat staph infections that can cause inflammation of the colon and small intestines.

Oral vancomycin works only in the intestines and is not normally absorbed into the body. This medicine will not treat other types of infection. An injection form of vancomycin is available to treat serious infections in other parts of the body.

Vancomycin may also be used for purposes not listed in this medication guide.


What is Vancomycin (Firvanq) used for?

  • Bacteremia
  • Endocarditis
  • Febrile Neutropenia
  • Intraabdominal Infection
  • Meningitis
  • Osteomyelitis
  • Peritonitis
  • Pneumonia
  • Pseudomembranous Colitis
  • Skin or Soft Tissue Infection
  • Head Injury
  • Bacterial Infection
  • Surgical Prophylaxis
  • Sepsis
  • Acute Disseminated Encephalomyelitis
  • Syphilitic Ruptured Cerebral Aneurysm
  • Syphilitic Parkinsonism
  • Head Injury with Loss of Consciousness
  • Head Injury with Intracranial Hemorrhage
  • Head Injury w/ Intracranial Hemorrhage and Loss of Consciousness
  • CNS Disorder
  • CNS Infection
  • CNS Tuberculosis
  • Herpes Zoster Meningitis
  • Shunt Infection
  • Enterocolitis
  • Nosocomial Pneumonia
  • Prevention of Perinatal Group B Streptococcal Disease
  • Herpes Zoster Myelitis


What is the most important information I should know about Vancomycin (Firvanq)?

You should not vancomycin if you are allergic to it.

Tell your doctor if you have ever had:

  • an intestinal disorder such as inflammatory bowel disease, Crohn's disease, or ulcerative colitis;
  • kidney disease;
  • hearing problems; or
  • if you are receiving any intravenous (IV) antibiotics.

Tell your doctor if you are pregnant or breastfeeding.

User Reviews & Rating

Overall rating for Vancomycin (Firvanq)

out of  5

(13 Vancomycin (Firvanq) Reviews)

Side Effects


Easy to Use




Read Vancomycin (Firvanq) Reviews

Side Effects

What are the side effects of Vancomycin (Firvanq)?

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Certain side effects may occur if your body absorbs vancomycin through the intestinal walls. Call your doctor at once if you have:

  • increased diarrhea that is watery or bloody;
  • hearing loss, ringing in your ears;
  • kidney problems–swelling, rapid weight gain, pain in your side or lower back, little or no urination; or
  • low potassium level–leg cramps, constipation, irregular heartbeats, fluttering in your chest, increased thirst or urination, numbness or tingling, muscle weakness or limp feeling.

Side effects on the kidneys may be more likely in older adults taking this medicine.

Common side effects may include:

  • low potassium;
  • nausea; or
  • stomach pain.

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.

Pregnancy & Breastfeeding

Can I take Vancomycin (Firvanq) if I’m pregnant or breastfeeding?

Tell your doctor if you are pregnant or breastfeeding.


What drugs and food should I avoid while taking Vancomycin (Firvanq)?

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

Dosage Guidelines & Tips

How to take Vancomycin (Firvanq)?

Use Vancomycin (Firvanq) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

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

Taking more of this medicine will not make it more effective, and may cause serious or life-threatening side effects.

Shake the oral solution (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

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. Vancomycin 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 vancomycin capsules at room temperature, away from heat and moisture.

Store the liquid medicine in the refrigerator, do not freeze. Throw away any unused liquid after 14 days.

What should I do if I missed a dose of Vancomycin (Firvanq)?

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

Overdose Signs

What happens if I overdose on Vancomycin (Firvanq)?

If you think you or someone else may have overdosed on: Vancomycin (Firvanq),  call your doctor or the Poison Control center

(800) 222-1222

If someone collapses or isn't breathing after taking Vancomycin (Firvanq), call 911



742, 250 mg

Color: blue/purple

Shape: capsule

Imprint: 742, 250 mg


Color: blue/brown

Shape: capsule

Imprint: 3125, VANCOCIN HCL 125 MG

LU, S01

Color: blue/brown

Shape: capsule

Imprint: LU, S01

See More

Leave a comment

Your email address will not be published. Required fields are marked *