Medical Information
United States
 

In order to provide you with relevant and meaningful content we need to know more about you.

Please choose the category that best describes you.

This content is intended for U.S. Healthcare Professionals. Would you like to proceed?

I am a U.S. Healthcare ProfessionalYes, I am a U.S. Healthcare Professional
SelectI am a U.S. Healthcare ProfessionalYes, I am a U.S. Healthcare Professional
I am a U.S. Patient / CaregiverNo, go back to the patient portal
SelectI am a U.S. Patient / CaregiverNo, go back to the patient portal
Non-US residents click here.

If you provide additional keywords, you may be able to browse through our database of Scientific Response Documents.

Our scientific content is evidence-based, scientifically balanced and non-promotional. It undergoes rigorous internal medical review and is updated regularly to reflect new information.

Methotrexate Vial Description

11 DESCRIPTION

Methotrexate is a folate analog metabolic inhibitor with the chemical name of N-[4-[[(2,4-diamino-6-pteridinyl) methyl]methylamino]benzoyl]-L-glutamic acid and a molecular weight of 454.44. The molecular formula is C20H22N8O5 , and the structural formula is shown below:

Chemical Structure

Methotrexate Injection with preservative is supplied in sterile multiple-dose vials for intravenous, intramuscular, or subcutaneous use.

  • Each 25 mg/mL, 2 mL vial contains 50 mg methotrexate equivalent to 54.8 mg of methotrexate sodium, 18.8 mg of benzyl alcohol as a preservative and Sodium chloride 5.2 mg. May contain sodium hydroxide and/or hydrochloric acid to adjust the pH to 8.5.

Preservative-free Methotrexate Injection is supplied in sterile single-dose vials for intravenous, intramuscular, subcutaneous, or intrathecal use.

  • Each 25 mg/mL, 40 mL vial contains 1000 mg methotrexate equivalent to 1096.7 mg of methotrexate sodium, and the following inactive ingredients: Sodium chloride 196 mg. May contain sodium hydroxide and/or hydrochloric acid to adjust pH to 8.5.
Show All Hide All
Show All Hide All
Did you find an answer to your question? Yes No
Didn’t find what you were looking for? Contact us.
MI Digital Assistant

Chat online with Pfizer Medical Information regarding your inquiry on a Pfizer medicine.

Call 800-438-1985*

*Contact Medical Information.

Medical Inquiry

Submit a medical question for Pfizer prescription products.

Report Adverse Event
Pfizer Safety

To report an adverse event related to a Pfizer product and you are not part of a clinical trial* for this product, click the link below to submit your information: Pfizer Safety Reporting Site

*If you are involved in a clinical trial for either product, adverse events should be reported to your coordinating study site.

If you cannot use the above website to report an adverse event related to a Pfizer product, please call Pfizer Medical Information at (800) 438-1985.

FDA Medwatch
You may also contact the U.S. Food and Drug Administration (FDA) directly to report adverse events or product quality concerns either online at www.fda.gov/medwatchor by calling
(800)-332-1088.