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Atenolol side effects

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  • keenwitted@aol.com
    FYI, I thought the gropu will like to know this piece of info. I did my research after Q almost dies after 7 hours of seizure-like syncopal episode and barely
    Message 1 of 12 , Mar 19, 2003
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      FYI, I thought the gropu will like to know this piece of info. I did my research after Q almost dies after 7 hours of seizure-like syncopal episode and barely breathing. I cut out Atenolol and he's his old self. I understand his heartbeat is not under control any more but at this time it's better than nightly trips to ER and witnessing such horrendsous episodes.

      ATENOLOL OVERDOSE:
      If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include usually fast or slow heartbeat, dizziness, slow or shallow breathing, seizures, unconsciousness, weakness, or fatigue.

      I can't believe that a vet cardiologist who prescribes this med all day long never informed us of possible side effects and was even baffled that Q would have seizures (that started a year ago). He denied that atenolol would cause any reaction besides lethargy. I'm not impressed
    • totosnotinkansas
      Wow, thanks for the info and I will consider it if Chloe has problems (though she is on so many meds, it may be difficult to discern what is causing what).
      Message 2 of 12 , Mar 20, 2003
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        Wow, thanks for the info and I will consider it if Chloe has problems
        (though she is on so many meds, it may be difficult to discern what
        is causing what).

        Marti
        > FYI, I thought the gropu will like to know this piece of info. I
        did my research after Q almost dies after 7 hours of seizure-like
        syncopal episode and barely breathing. I cut out Atenolol and he's
        his old self. I understand his heartbeat is not under control any
        more but at this time it's better than nightly trips to ER and
        witnessing such horrendsous episodes.
        >
        > ATENOLOL OVERDOSE:
        > If overdose is suspected, contact your local poison control center
        or emergency room immediately. Symptoms of overdose may include
        usually fast or slow heartbeat, dizziness, slow or shallow breathing,
        seizures, unconsciousness, weakness, or fatigue.
        >
        > I can't believe that a vet cardiologist who prescribes this med all
        day long never informed us of possible side effects and was even
        baffled that Q would have seizures (that started a year ago). He
        denied that atenolol would cause any reaction besides lethargy. I'm
        not impressed
      • Susan
        FYI Atenolol should never be discontinued suddenly. Prednisone/Prednisolone should never be discontinued without tapering. First do no harm. Susan ...
        Message 3 of 12 , Mar 20, 2003
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          FYI

          Atenolol should never be discontinued suddenly.
          Prednisone/Prednisolone should never be discontinued
          without tapering. First do no harm.

          Susan

          --- totosnotinkansas <totosnotinkansas@...>
          wrote:
          > Wow, thanks for the info and I will consider it if
          > Chloe has problems
          > (though she is on so many meds, it may be difficult
          > to discern what
          > is causing what).
          >
          > Marti
          > > FYI, I thought the gropu will like to know this
          > piece of info. I
          > did my research after Q almost dies after 7 hours of
          > seizure-like
          > syncopal episode and barely breathing. I cut out
          > Atenolol and he's
          > his old self. I understand his heartbeat is not
          > under control any
          > more but at this time it's better than nightly trips
          > to ER and
          > witnessing such horrendsous episodes.
          > >
          > > ATENOLOL OVERDOSE:
          > > If overdose is suspected, contact your local
          > poison control center
          > or emergency room immediately. Symptoms of overdose
          > may include
          > usually fast or slow heartbeat, dizziness, slow or
          > shallow breathing,
          > seizures, unconsciousness, weakness, or fatigue.
          > >
          > > I can't believe that a vet cardiologist who
          > prescribes this med all
          > day long never informed us of possible side effects
          > and was even
          > baffled that Q would have seizures (that started a
          > year ago). He
          > denied that atenolol would cause any reaction
          > besides lethargy. I'm
          > not impressed
          >
          >
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        • Theresa Peluso
          My 13 yr old has been diagnosed recently with unclassified feline cariomyopathy. Mild left atrial enlargement. Ventricular arrhythmias English, he s got a
          Message 4 of 12 , Jun 11, 2003
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            My 13 yr old has been diagnosed recently with "unclassified feline
            cariomyopathy. Mild left atrial enlargement. Ventricular arrhythmias"
            English, he's got a samll leak in his left valve and a heart murmur.
            He started on 1/4 of 25 mg 1x per day two weeks ago. Had a bit of a
            positive effect then he got lethargic again. They increased to 1/4 of
            25mg 2x per day yesterday. It may be my imagination but I think he's
            breathing faster not slower. I realize there are side effects with
            all drugs, but is there someplace that describes the pros/cons of
            using this drug on a cat?
          • Susan
            ... Theresa, From what I understand atenolol affects heart rate but not respiration. 30 per minute (resting) is the high end of normal for a cat. Rudy s resp.
            Message 5 of 12 , Jun 11, 2003
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              --- Theresa Peluso <tbdev@...> wrote:

              > He started on 1/4 of 25 mg 1x per day two weeks ago.
              > Had a bit of a
              > positive effect then he got lethargic again. They
              > increased to 1/4 of
              > 25mg 2x per day yesterday. It may be my imagination
              > but I think he's
              > breathing faster not slower. I realize there are
              > side effects with
              > all drugs, but is there someplace that describes the
              > pros/cons of
              > using this drug on a cat?


              Theresa,

              From what I understand atenolol affects heart rate but
              not respiration. 30 per minute (resting) is the high
              end of normal for a cat. Rudy's resp. rate did not
              decrease with atenolol. I will see what else I can dig
              up. I do know my vet told me if the cat can not jump
              up on furniture the atenolol dose is too high and
              heart rate is too slow. I also think it takes a few
              days to see a difference.

              Susan

              =====
              Rudy: Male DSH brown tabby, feral mom, diagnosed 09-2002 at 19 months of age with idiopathic HCM: grade 2 murmur, hyperkinetic heart, borderline normal thickening, considered asymptomatic, 12.5 mg Atenolol 1x day, 1/2 baby aspirin 2x week administered via pilling

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            • pegfrench6
              My Torrie who is very frail and tiny has been on Atenolol since April 7 with no adverse reaction. Peg and Torrie
              Message 6 of 12 , Jun 11, 2003
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                My Torrie who is very frail and tiny has been on Atenolol since April
                7 with no adverse reaction. Peg and Torrie
              • Nannygoatsf
                Theresa, I used Atenol on my cat Bogie for five years and it helped him a great deal. He s now on a calcium blocker but the atenolol did help keep his heart
                Message 7 of 12 , Jun 13, 2003
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                  Theresa,

                  I used Atenol on my cat Bogie for five years and it helped him a
                  great deal. He's now on a calcium blocker but the atenolol did help
                  keep his heart rate down - his breathing got heavy after some time
                  however, and we had to add Lasix to his medication regimen.

                  It's my understanding that cat's breathing increases because the
                  heart becomes swollen and sometimes acts as it's in "panic" mode ;
                  more fluid is produced which can build up in the lungs, making
                  breath labored. Did your doctor do xrays to look at the lungs?

                  Nancy (and Bogie)

                  --- In feline-heart@yahoogroups.com, "Theresa Peluso" <tbdev@b...>
                  wrote:
                  > My 13 yr old has been diagnosed recently with "unclassified feline
                  > cariomyopathy. Mild left atrial enlargement. Ventricular
                  arrhythmias"
                  > English, he's got a samll leak in his left valve and a heart
                  murmur.
                  > He started on 1/4 of 25 mg 1x per day two weeks ago. Had a bit of
                  a
                  > positive effect then he got lethargic again. They increased to 1/4
                  of
                  > 25mg 2x per day yesterday. It may be my imagination but I think
                  he's
                  > breathing faster not slower. I realize there are side effects with
                  > all drugs, but is there someplace that describes the pros/cons of
                  > using this drug on a cat?
                • Craig Schriever
                  My Cat Rompy was prescribed 12.5 MG Atenolol (Once per day) for a year...When I brought him back to the specialist they told me his heartrate was TOO SLOW at
                  Message 8 of 12 , Jun 13, 2003
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                    My Cat Rompy was prescribed 12.5 MG Atenolol (Once per day) for a year...When I brought him back to the specialist they told me his heartrate was TOO SLOW at 125. Now they have him on 6.5 MG Atenolol per day and a Blood thinner (ENALAPRIL 1.25MG twice per day) so hopefully his Heartrate will increase to 150. Hope this info helps...Craig
                    ----- Original Message -----
                    From: Nannygoatsf
                    To: feline-heart@yahoogroups.com
                    Sent: Friday, June 13, 2003 1:47 PM
                    Subject: [FH] Re: Atenolol side effects


                    Theresa,

                    I used Atenol on my cat Bogie for five years and it helped him a
                    great deal. He's now on a calcium blocker but the atenolol did help
                    keep his heart rate down - his breathing got heavy after some time
                    however, and we had to add Lasix to his medication regimen.

                    It's my understanding that cat's breathing increases because the
                    heart becomes swollen and sometimes acts as it's in "panic" mode ;
                    more fluid is produced which can build up in the lungs, making
                    breath labored. Did your doctor do xrays to look at the lungs?

                    Nancy (and Bogie)

                    --- In feline-heart@yahoogroups.com, "Theresa Peluso" <tbdev@b...>
                    wrote:
                    > My 13 yr old has been diagnosed recently with "unclassified feline
                    > cariomyopathy. Mild left atrial enlargement. Ventricular
                    arrhythmias"
                    > English, he's got a samll leak in his left valve and a heart
                    murmur.
                    > He started on 1/4 of 25 mg 1x per day two weeks ago. Had a bit of
                    a
                    > positive effect then he got lethargic again. They increased to 1/4
                    of
                    > 25mg 2x per day yesterday. It may be my imagination but I think
                    he's
                    > breathing faster not slower. I realize there are side effects with
                    > all drugs, but is there someplace that describes the pros/cons of
                    > using this drug on a cat?


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                  • timbysmommy
                    Jenifer, I have been told it can interfere with regulation of blood sugar if you are dealing with a diabetic, but don t know of any other side effects besides
                    Message 9 of 12 , Jan 6, 2005
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                      Jenifer,

                      I have been told it can interfere with regulation of blood sugar if
                      you are dealing with a diabetic, but don't know of any other side
                      effects besides what has been mentioned. I had a cat on atenolol for
                      6 years and he experienced no side effects. He died at 15 years old
                      after having HCM for 6 years. I was very satisfied with atenolol. It
                      gave him 6 extra years of life.

                      Good luck

                      Linda

                      --- In feline-heart@yahoogroups.com, "MS" <ms3213@c...> wrote:
                      > Hi,
                      > Thanks to all of you who responded to my emails about Tavy. I gave
                      her the
                      > first pill of atenolol last night. It was much easier than I
                      expected. I
                      > crushed it and mixed it with a spoonful of meat baby food, and she
                      gulped it
                      > right down. She'll love getting that twice a day! I'm hoping the
                      meds help
                      > her. I'm watching for side effects, but so far I've not noticed
                      any. I
                      > know to look out for appetite loss. Have your cats experienced
                      side effects
                      > on this medication?
                      > Thanks, and Happy New Year to you all.
                      > Jenifer
                      >
                      >
                      >
                      >
                      > [Non-text portions of this message have been removed]
                    • solarsinger008
                      zena, our 11 year old dlh tortie was diagnosed with this heart condition after suffering acute respiratory failure (labored breathing) after the first day of
                      Message 10 of 12 , Jul 9, 2008
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                        zena, our 11 year old dlh tortie was diagnosed with this heart condition after suffering
                        acute respiratory failure (labored breathing) after the first day of oppressive heat/humidity
                        (over 95). At first the er vet thought it was asthma/allergy (7 cases preceded us)-
                        however, xrays showed her lungs also had some sort of 'crud' - we were lucky the vet was
                        cautious and prescribed only lasix to start and advised an ultrasound/ekg after she got
                        stabilized. Further testing showed thickening of the heart muscle, murmur- we were given
                        atenolol (transdermal) after she was weaned off the lasix, her lungs cleared within a
                        week- steroids were not recommended because of the heart condition. MY QUESTION:
                        zena did not respond well to this med at the 25 mg dosage- she became very 'drained'
                        and exhibited muscle twitching, wasn't eating well-we continued to reduce the dosage
                        until it was about 2.5 mg- she still seemed to have a reaction-- i have discontinued the
                        meds and have started giving her vitamin e and intend on trying to treat with diet as well
                        as a smear of atenolol every other day... in the mean time, after 3 weeks, noone has told
                        zena she has a heart condition- TG, she has resumed most of her usual activities. (pulse
                        went down from 240 to 160 at last vets visit); she is eating smaller meals throughout the
                        day. However, i have noticed that she has changed her resting posture to that of 'flying
                        cat pose' (opening the chest to get more air?) and still is not really her old self... am still
                        concerned that she is trying to 'hide' the illness.
                        any comments would be appreciated- are the Side Effects of this drug worth it?? should
                        we consider a different type of heart med? what about holistic treatments? ps- i do
                        massage/reiki on her limbs, back and front- seems her back limbs are more
                        sensitive...Any good cardiologists in CT? Thanks,
                      • Carol
                        Mellie was prescribed atenolol 25mg with the dose rate of 1/4 tab daily but it did nothing to lower her heart rate which was 227, the dose was raised to 1/4
                        Message 11 of 12 , Jul 10, 2008
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                          Mellie was prescribed atenolol 25mg with the dose rate of 1/4 tab
                          daily but it did nothing to lower her heart rate which was 227, the
                          dose was raised to 1/4 tab twice daily and then it did drop the heart
                          rate to 128 or something like that. The next week the rate was back
                          up some (first check at vet's was 225, next check was 158 I think) so
                          the dose didn't change. I bought a stethoscope and now check it at
                          home and it is pretty consistent at 134.

                          Initially Mellie was lethargic but not really any different from how
                          she had been prior to the medication and now that her heart rate has
                          lowered some she actually seems to be more awake of a morning.

                          Hope you find the proper dosage schedule to get your kitty feeling
                          better.

                          Carol and Mellie



                          --- In feline-heart@yahoogroups.com, "solarsinger008"
                          <bsoares105@...> wrote:
                          >
                          > zena, our 11 year old dlh tortie was diagnosed with this heart
                          condition after suffering
                          > acute respiratory failure (labored breathing) after the first day
                          of oppressive heat/humidity
                          > (over 95). At first the er vet thought it was asthma/allergy (7
                          cases preceded us)-
                          > however, xrays showed her lungs also had some sort of 'crud' - we
                          were lucky the vet was
                          > cautious and prescribed only lasix to start and advised an
                          ultrasound/ekg after she got
                          > stabilized. Further testing showed thickening of the heart muscle,
                          murmur- we were given
                          > atenolol (transdermal) after she was weaned off the lasix, her
                          lungs cleared within a
                          > week- steroids were not recommended because of the heart condition.
                          MY QUESTION:
                          > zena did not respond well to this med at the 25 mg dosage- she
                          became very 'drained'
                          > and exhibited muscle twitching, wasn't eating well-we continued to
                          reduce the dosage
                          > until it was about 2.5 mg- she still seemed to have a reaction-- i
                          have discontinued the
                          > meds and have started giving her vitamin e and intend on trying to
                          treat with diet as well
                          > as a smear of atenolol every other day... in the mean time, after
                          3 weeks, noone has told
                          > zena she has a heart condition- TG, she has resumed most of her
                          usual activities. (pulse
                          > went down from 240 to 160 at last vets visit); she is eating
                          smaller meals throughout the
                          > day. However, i have noticed that she has changed her resting
                          posture to that of 'flying
                          > cat pose' (opening the chest to get more air?) and still is not
                          really her old self... am still
                          > concerned that she is trying to 'hide' the illness.
                          > any comments would be appreciated- are the Side Effects of this
                          drug worth it?? should
                          > we consider a different type of heart med? what about holistic
                          treatments? ps- i do
                          > massage/reiki on her limbs, back and front- seems her back limbs
                          are more
                          > sensitive...Any good cardiologists in CT? Thanks,
                          >
                        • elfinmyst@aol.com
                          Hi My cats on Atenolol started on a very low dose and this was increased every 4 days until they reached the full dose. That way it avoided any major reactions
                          Message 12 of 12 , Jul 10, 2008
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                            Hi

                            My cats on Atenolol started on a very low dose and this was increased every
                            4 days until they reached the full dose. That way it avoided any major
                            reactions and they all tolerated it well. I have found the Atenolol to be excellent
                            for 3 of my heart cats and two have stabilised on it.

                            Maybe you could discuss slowly increasing the dosage to avoid the side
                            effects.

                            :) Lyn

                            www.furkids-uk.com






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