Qantity per dose: Number of tablets, capsules, or mL per each dose.
| Examples: | Qantity per dose: |
|---|---|
| Take 2 tablets FOUR times a day | 2 |
| Take 5mL by measure THREE times a day | 5 |
Number of dose(s): The frequency of dosage per period of time.
| Examples: | Number of dose(s): |
|---|---|
| Take 2 tablets FOUR times a day | 4 |
| Apply 1 patch to skin TWICE a week | 2 |
Per (number of days): The dose per the period of time.
| Examples: | Per (number of days): |
|---|---|
| Take 2 tablets FOUR times a day | 1 |
| Take 1 tablet on every ALTERNATE day | 2 |
| Apply 1 patch to skin TWICE a week | 7 |
Prescribed Quantity: The total prescribed qantity of the script.
| Examples: | Prescribed Quantity: |
|---|---|
| Take 2 tablets FOUR times a day (QTY: 180 tablets) | 180 |
| Take 5mL by measure THREE times a day (QTY: 100mL) | 100 |
| Apply 1 patch to skin TWICE a week (QTY: 4 patches) | 4 |
The Interval Calculator is used to work out whether a prescription is due to be dispensed. This is used primarily for checking Scedule 8 (S8) medications or Scedule 4 Appendix D (S4D) medications (in certain states). Please refer to Regulations to find out the requirements for a specific state.
*Please note that this calculator is not meant to be used for the calculation of Safety Net 20 Day Rule (SN20).
Refer to the Add & Subtract Days Calculator for the list of medications on The Pharmaceutical Benefits Scheme (PBS). Use the Simple Interval Calculator if the current interval is irrelevant or not required.
1. Australian Government (Department of Health and Aged Care) - Scheduling Basics
https://www.tga.gov.au/how-we-regulate/ingredients-and-scheduling-medicines-and-chemicals/poisons-standard-and-scheduling-medicines-and-chemicals/scheduling/scheduling-basics
2. Australian Government (Department of Health and Aged Care) - The Poisons Standard (the SUSMP)
https://www.tga.gov.au/how-we-regulate/ingredients-and-scheduling-medicines-and-chemicals/poisons-standard-and-scheduling-medicines-and-chemicals/poisons-standard-susmp-0
3. Australian Government (Department of Health and Aged Care) - Contacts for State/Territory medicines & poisons regulation units
https://www.tga.gov.au/how-we-regulate/ingredients-and-scheduling-medicines-and-chemicals/poisons-standard-and-scheduling-medicines-and-chemicals/scheduling/contacts-stateterritory-medicines-poisons-regulation-units
4. NSW Government (NSW Health) - Frequently Asked Questions - Dispensing S8 or S4 prescriptions
https://www.health.nsw.gov.au/pharmaceutical/pharmacists/Pages/faq-dispense-s8-and-s4-medicines.aspx
5. The Pharmaceutical Benefits Scheme (PBS) - FAQ: What are repeat intervals for PBS prescriptions?
https://www.pbs.gov.au/info/general/faq#WhatarerepeatintervalsforPBSprescriptions
6. The Pharmaceutical Benefits Scheme (PBS) - Safety Net early supply rule
https://www.pbs.gov.au/browse/safety-net
All calculators have been designed and tested for accuracy to the best of our knowledge. However, DoseMaster Pty Ltd does not make any promises or give any warranties about its absolute accuracy, reliability, completeness or suitability for any particular purpose. It is highly recommended to re-test your calculation repeatedly before any decision is made. The information provided are for general advice only and should not be relied on as personal advice. Each individual is subject to their own health/medical conditions, please always seek professional guidance from qualified healthcare professionals. To the extent permissible by law, DoseMaster Pty Ltd will not be liable for any expenses, losses, damages (including indirect or consequential damages), costs, injury, medical error, physical and mental harm or impairment, death which might be incurred as a result of the information being inaccurate or incomplete in any way and for any reason.
Please refer to our Disclaimer Page for more information.
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