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(Tobramycin) Inhalation Solution, USP
TOBI® is a tobramycin solution for inhalation. It is a sterile, clear, slightly yellow, non-pyrogenic, aqueous solution with the pH and salinity adjusted specifically for administration by a compressed air driven reusable nebulizer. The chemical formula for tobramycin is C18H37N5O9 and the molecular weight is 467.52. Tobramycin is O-3-amino-3-deoxy-α-D-glucopyranosyl-(1→4)-O-[2,6-diamino-2,3,6trideoxy-α-D-ribo-hexopyranosyl-(1→6)]-2-deoxy-L-streptamine. The structural formula for tobramycin is:
Each single-use 5 mL ampule contains 300 mg tobramycin and 11.25 mg sodium chloride in sterile water for injection. Sulfuric acid and sodium hydroxide are added to adjust the pH to 6.0. Nitrogen is used for sparging. All ingredients meet USP requirements. The formulation contains no preservatives.
What are the possible side effects of tobramycin (Tobi)?
If you experience any of the following serious side effects, stop using tobramycin and seek emergency medical attention or notify your doctor immediately:
- an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
- ringing in the ears or changes in hearing;
- new or worsening respiratory problems or difficulty breathing;
- muscle weakness; or
- a rash.
If you experience any of the following less serious side effects, continue using tobramycin and talk to your...
What are the precautions when taking tobramycin (Tobi)?
Before using tobramycin inhalation solution, tell your doctor or pharmacist if you are allergic to it; or to other aminoglycoside antibiotics (such as gentamicin); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: hearing problems (including deafness, decreased hearing), kidney problems, myasthenia gravis, Parkinson's disease.
Tobramycin may cause live bacterial vaccines (such as typhoid vaccine) not to work as well. Therefore, do not have any immunizations/vaccinations while using this medication without the consent of your doctor.
Last reviewed on RxList: 5/8/2014
This monograph has been modified to include the generic and brand name in many instances.
Additional Tobi Information
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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