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Fentanyl dosgae vs. Weight

GabbigurlGGabbigurl Posts: 1
edited 07/05/2015 - 10:59 PM in Pain Medications
So not sure how often this is monitored or replied to but I had a few questions. One main one is the fentanyl patch has made me a 7 on a scale 1-10.even My Dr put me on 12mcg 72hrs. Wasted the 1st 5 basically, until I figured out how to keep it on (I use nexcare tegaderm) and deodorant around the tegaderm other wise that sweats off too (any advice on how you keep yours on would be appreciated as well) anyway my main question is this like most things the heavier you are usually it takes more for the full effect to be reached. I have been having the muscles spasms, like constant charlie horses in my legs and arms. Qhen rain ask the info I could on this patch that is awithdrawl sympton not a side effect when I told my pain Dr. Said only like 1% of patients get that side effect, but I got to thinking what if it's not a side effect but more like a withdrawal situation because it's just not going into my system fully. Because see I weigh 380 lbs. And an 6ft talk, So if you think about 90% of other things should my weight be taken into consideration with dosing? Any advice would be helpful. It's almost like why take this dose, because these constant charlie horse muscle spasms are almost worth it. But the back pain has lessened quite a bit, I'm not waking up in the morning and needing to lift my craft matic to get up, I can just sit up. Sorry for typos thanks for reading

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  • LizLiz Posts: 8,835
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  • Help muscle spasms . It is not meant to. Fentanyl is a potent opiate medication meant to treat pain that requires around the clock pain medication.
    Fentanyl dosing is not based on weight. Your weight has nothing to do with how much fentanyl you need.
    I am not sure what you are talking about as a side effect, your post was unclear regarding that.
    Fentanyl is absorbed into your skin and delivered through your blood stream. Once you apply the patch, and continue to replace them as prescribed, The patches deliver a constant stream of medication for the time frame between patch changes and beyond. The patches still contain medication even after the three days.Withdrawal symptoms would be highly unlikely.
    If you wasted the first 5 patches, you are going to run out early and your doctor is not going to be happy, and most likely will not give you replacements or early fills. It is very, very important that you apply the patch in an area that the skin does not move much, do not use creams, lotions or deodorants in the area. Make sure the hair is clipped as short as possible, clean and dry the area completely, then apply the patch, and tegaderm covering. Hold it in place for at least 30 seconds. The upper arms , calf are good locations. Rotate the sites you apply the patch each time you change it. You also need to avoid activities that increase your body's temperature, hot showers, hot tubs, not allowing the sun to heat the patch, strenuous activities.

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  • Hi - I have been on Fentanyl 25mcg for the last 2 years and can offer some help with a couple of your issues.

    1) how to keep the patches on.
    I live in QLD, Australia and the summers here are very humid. In summer I put the patches on the top of my leg hidden above the shorts line. I clean the skin with ISOCOL (alcohol) first to make sure there is no oily residue on the skin. I then put the patch on and press firmly to make sure it sticks, I then put a cover over the patch to make sure it stays on. The product Iis called FIXAMUL. Before I put the FIXAMUL tape on, I write the day and time on it so that I have a record of when I put it on.

    2) muscle spasms in legs arms etc
    These symptoms often happen to me as a result of withdrawal. This was happening to me after 2 days on every patch. My PM doc changed the frequency of the patch changes from every 3 days to every 2 days. It has helped a lot. Might be worth discussing this issue with your PM doc to see if he thinks that might be the problem.

    Withdrawal symptoms happen when the level of medication drops below the level you are dependent on. If the medication wasn't getting into your system properly in the first place then you wouldn't be suffering from withdrawal type symptoms.

    You might need to also talk to your PM doc about appropriate medication to help with muscle spasms.

    3) is the medication weight related?
    Definitely not. Some people will do quite well on 12 mcg patches and others are far more opiate tolerant and need much larger doses. It depends on a number of factors such as opiate tolerance, body's ability to metabolise opiate medications just to name a few. If the patches you are on are not covering your pain adequately you need to talk to your pain management doctor about it. You also need to discuss plans for dealing with breakthrough episodes.

    Suggest you talk with your PM doc. Hope my comments help you to identify the questions you want to ask.
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