Prescription Directions Question (What Does 'T1T' Mean)?

In our latest question and answer, the pharmacist clarifies prescription directions for one of our readers.

Question

What does “T1T PO BID” mean? Mostly looking for the definition of “T1T.”

Asked by gail On Oct 30, 2024

Answered by
Medical Content Reviewed By HelloPharmacist Staff

Published Oct 31, 2024
Last updated Dec 06, 2024

Answer

Thank you for reaching out!

Medical abbreviations on prescriptions have a long history of use and are documented in various sources, such as the Institute for Safe Medication Practices (ISMP) and the Joint Commission.

However, there is no single standardized source that provides a definitive reference for all abbreviations used. In fact, many organizations publish lists of abbreviations that should be avoided due to the potential for misinterpretation.

In this case, "T1T" is certainly not a common abbreviation. You'll more frequently encounter standard abbreviations like QD (once daily), BID (twice daily), PRN (as needed), and Q6H (every six hours), which have well-understood meanings.

However, "T1T" is sometimes used to mean "take one tablet," though its use is certainly unconventional. This abbreviation could easily be confusing, especially since it’s not widely recognized or consistent with typical pharmacy standards. You just won't see it often.

Given the context, the directions on your prescription of “TIT PO BID” could likely mean “take one tablet by mouth twice daily,” with:

  • T1T (or TIT) intended to mean "Take One Tablet,"
  • PO meaning "by mouth",
  • BID indicating "twice daily."

However, I strongly recommend confirming with your healthcare provider or pharmacist to ensure you’re interpreting your prescription correctly. Prescription instructions should always be clear to avoid any potential for dosing errors, and it's important to clarify anything ambiguous or unfamiliar.

Final Words

I hope this answer clarifies things! Don’t hesitate to reach out again if any other questions arise.

Thank you!

References

  • ISMP’s List of Error-Prone Abbreviations, Symbols, and Dose Designations, ISMP

About the Pharmacist

Dr. Brian Staiger, PharmD

Dr. Brian has been practicing pharmacy for over 13 years and has wide-ranging experiences in many different areas of the profession. From retail, clinical, program development, and administrative responsibilities, he's your knowledgeable and go-to source for all your pharmacy and medication-related questions! Dr. Brian Staiger also has herbalist training and educational certificates in the field of medical ethnobotany. Feel free to send him an email at [email protected]! You can also connect with Dr. Brian Staiger on LinkedIn.

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