These bidirectional differences are not captured in a traditional equianalgesic table.,; Dose-dependent conversions: The conversion ratio of. Opiate Equianalgesic Dosing Chart. Pharmacy & Therapeutics Committee. Note: Published tables vary in the suggest algesic to morphine. Clinical response is. TABLE 1: OPIOID EQUIANALGESIC TABLE. NB: It is important to recognize the limitations of opioid equianalgesic tables. Equianalgesic doses have been.

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When switching between opioids, equianalgesic conversions may overestimate the potency of the new opioid due to incomplete cross-tolerance. American Society of Health-System Pharmacists.

Equianalgesic – Wikipedia

Patient is receiving a total of 5 mg of parenteral hydromorphone in a hour period via a PCA pump. Accessed December 31, Conversion Ratio of Oral Morphine to Methadone. Archived from the original on December 24, The following table lists opioid and non-opioid analgesic drugs and their relative potencies. Values for the potencies represent opioids taken orally unless another route of administration is provided.

Pentazocine lactate IV [14]. Accuracy in equianalgesic dosing. As a clinician, it is important to note that there are significant limitations to equianalgesic conversions and tables.


Principles of analgesic use in the treatment of acute pain and cancer pain. Instantaneously from 5 – 15 sec IV ; 2 – 5 min IM. Do not use this table to convert from fentanyl transdermal system to other opioid analgesics because these conversion dosage recommendations are conservative.

Journal of Clinical Pharmacology. Equianalgesic dose ratios for opioids. Continue looking for other causes of sedation and respiratory depression.

Equivalent Opioid Calculator

A Guide for Effective Dosing. Because transdermal fentanyl has a delayed onset and onset of peak activity, consider titrating every 3 days.

When converting from PCA administration, add the total amount of opioid that the patient received in the last 24 hours, including. Am J Hosp Pharm. Incomplete cross-tolerance is a reduction in equianalgesic dose when changing from one opioid to another.

This page was last edited on 30 Novemberat Analgesics N02AN02B.


Janssen Pharmaceuticals, Inc; Opioid Opiate Equianalgesia Conversion Calculator. Opioid Analgesics These are general guidelines. An alternative algorithm for dosing transdermal fentanyl for cancer-related pain. Because equianalgesic tables are inherently inaccurate, dose titration to optimal effect is essential. National Institute of Health. The equianalgesic chart indicates that 1.

As such, their bioavailabilities differ, and they may be more potent when taken intravenously. These are general guidelines. Archived from the original on Opioid conversions in acute care. Available at UIHC as: Contact the Pain Service for other alternatives.


American Pain Society; Agonists abridged; see here for a full list: Adjust dosing to achieve patient comfort with minimal side effects.

Opioid (Opiate) Equianalgesia Conversion Calculator –

While these equianalgesic tables are current the “best” solution, their limitations should be emphasized:. Cannabidiol Cannabis Nabilone Nabiximols Tetrahydrocannabinol dronabinol. US Food and Drug Administration. An equianalgesic chart can be a useful tool, but the user must take care to correct for all relevant variables such as route of administration, cross tolerancehalf-life and the bioavailability of a drug.

Patient care requires individualization based on patient needs and responses. There are several reasons for switching a patient to a different pain medication. In an inpatient setting, rescue doses can be provided IV every minutes. Basal infusion rates are discouraged unless the patient has been taking scheduled opioids for more than one week.