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Fentanyl Patch dosage determination
Based roughly on the table below this calculator.
Enter total daily dosage:
mg
The 50, 75, and 100 mcg/hr patches should only be used in patients already on and tolerant to opioid therapy. This calculator, which is based roughly on information  provided by  ©Janssen Pharmaceuticals Inc.,  computes a conservative estimate of the equivalent fentanyl patch  based on the patient's current opioid therapy.  According to the manufacturer, 50% of the patients in clinical trials required a dose increase after initial application using a similar computation. All patients should also be prescribed a short-acting narcotic for breakthrough pain. 
All calculations must be confirmed before use. The authors make no claims of the accuracy of the information contained herein; and these suggested doses are not a substitute for clinical judgement. Neither GlobalRPh Inc. nor any other party involved in the preparation of this program shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material.    PLEASE READ THE DISCLAIMER CAREFULLY BEFORE ACCESSING OR USING THIS SITE. BY ACCESSING OR USING THIS SITE, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER.


Source: Ortho-McNeil, Inc. 2006-2008. All rights reserved. 
Manufactured by: ALZA Corporation Mountain View, CA 94043 Distributed by: Janssen, L.P.Titusville, NJ 08560 [Add new code post-approval] Revised February 2008 
©Janssen 2008. http://www.duragesic.com/

Disclaimer
All calculations must be confirmed before use. The authors make no claims of the accuracy of the information contained herein; and these suggested doses are not a substitute for clinical judgment. Neither GlobalRPh Inc. nor any other party involved in the preparation of this program shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material.PLEASE READ THE DISCLAIMER CAREFULLY BEFORE ACCESSING OR USING THIS SITE. BY ACCESSING OR USING THIS SITE, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER.   Read the disclaimer
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Medical Calculators - A thru Z
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Lab Values - A thru Z
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How to use this chart:    First determine the patient's previous 24 hour regimen for any of the agents listed below.  All dosages in the same row are therapeutically equivalent. Example: Patient is receiving Oxycodone 5-10mg po q4h = 30-60 mg/day . Using the table below, the equivalent dose of  Fentanyl patch would be 25 mcg.   top

NOTE:   DO NOT use this table to convert to other opiates.
Codeine Fentanyl Patch Hydromorphone Meperidine Methadone Morphine Oxycodone
Oral IV (Patch) Oral IV Oral IV Oral IV Oral IV Oral IV
150-447 104-286 25 mcg 5.6-17 1.2-3.4 - 60-165 15-44 8-22 45-134 8-22 22.5-67 12-33
448-747 287-481 50 mcg 17.1-28 3.5-5.6 - 166-278 45-74 23-37 135-224 23-37 67.5-112 33.1-56
748-1047 482-676 75 mcg 28.1-39 5.7-7.9 - 279-390 75-104 38-52 225-314 38-52 112.5-157 56.1-78
1048-1347 677-871 100 mcg 39.1-51 8-10 - 391-503 105-134 53-67 315-404 53-67 157.5-202 78.1-101
1348-1647 872-1066 125 mcg 51.1-62 10.1-12 - 504-615 135-164 68-82 405-494 68-82 202.5-247 101.1-123
1648-1947 1067-1261 150 mcg 62.1-73 12.1-15 - 616-728 165-194 83-97 495-584 83-97 247.5-292 123.1-147
1948-2247 1262-1456 175 mcg 73.1-84 15.1-17 - 729-840 195-224 98-112 585-674 98-112 292.5-337 147.1-168
2248-2547 1457-1651 200 mcg 84.1-96 17.1-19 - 841-953 225-254 113-127 675-764 113-127 337.5-382 168.1-191
2548-2847 1652-1846 225 mcg 96.1-107 19.1-21 - 954-1065 255-284 128-142 765-854 128-142 382.5-427 191.1-213
2848-3147 1847-2041 250 mcg 107.1-118 21.1-24 - 1066-1178 285-314 143-157 855-944 143-157 427.5-472 213.1-236
3148-3447 2042-2236 275 mcg 118.1-129 24.1-26 - 1179-1290 315-344 158-172 945-1034 158-172 472.5-517 236.1-258
3448-3747 2237-2431 300 mcg 129.1-141 26.1-28 - 1291-1403 345-374 173-187 1035-1124 173-187 517.5-562 258.1-281