A few observations about your meds use:
1. The effectiveness with Prednisone at breaking a cycle is why it's a major tool to use at the start of a cycle. BUT we know that attacks will return rapidly when it's stopped and this is why--during the period of using Pred--we start one of the standard prevention meds. Verapamil has the longest track record for effectiveness but it does take a number of days to become effective (and dosing adjustments are routine). Therefore, standard to take both meds at the same time.
Your expressed concern about Verap safety needs to be balanced with the clinical evidence/experience. This report gives both sides of the equation but, if you will read carefully, you see it's possible both to catch the side effects early and they resolve quickly. (See the last few lines in the last paragraph of the second portion of the article.)
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Verapamil warning
« on: Aug 21st, 2007, 10:38am »
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I posted this information recently in the form of a news release but more details here.
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Neurology. 2007 Aug 14;69(7):668-75.
Electrocardiographic abnormalities in patients with cluster headache on verapamil therapy.
Cohen AS, Matharu MS, Goadsby PJ.
Headache Group, Institute of Neurology, The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
BACKGROUND: High dose verapamil is an increasingly common preventive treatment in cluster headache (CH). Side effects include atrioventricular block and bradycardia, although their incidence in this population is not clear. METHOD: This audit study assessed the incidence of arrhythmias on high dose verapamil in patients with cluster headache. RESULTS: Of three hundred sixty-nine patients with cluster headache, 217 outpatients (175 men) received verapamil, starting at 240 mg daily and increasing by 80 mg every 2 weeks with a check electrocardiogram (EKG), until the CH was suppressed, side effects intervened, or to a maximum daily dose of 960 mg. One patient had 1,200 mg/day. Eighty-nine patients (41%) had no EKGs. One hundred eight had EKGs in the hospital notes, and a further 20 had EKGs done elsewhere. Twenty-one of 108 patients (19%) had arrhythmias. Thirteen (12%) had first-degree heart block (PR > 0.2 s), at 240 to 960 mg/day, with one requiring a permanent pacemaker. Four patients had junctional rhythm, and one had second-degree heart block. Four patients had right bundle branch block. There was bradycardia (HR < 60 bpm) in 39 patients (36%), but verapamil was stopped in only 4 patients. In eight patients the PR interval was lengthened, but not to >0.2 s. The incidence of arrhythmias on verapamil in this patient group is 19%, and bradycardia 36%. CONCLUSION: We therefore strongly recommend EKG monitoring in all patients with cluster headache on verapamil, to observe for the potential development of atrioventricular block and symptomatic bradycardia.
PMID: 17698788 [PubMed]
« Reply #7 on: Today at 1:01am » WITH THANKS TO "MJ" FOR POSTING THIS EXPLANATION.
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The article summarized in layman terms from the website below.
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"Cluster Headache Treatment Poses Cardiac Dangers
Off-label use of verapamil linked to heart rhythm abnormalities, study finds
By Jeffrey Perkel
HealthDay Reporter
MONDAY, Aug. 13 (HealthDay News) -- People who use a blood pressure drug called verapamil to treat cluster headaches may be putting their hearts at risk.
That's the finding from a British study that found heart rhythm abnormalities showing up in about one in five patients who took the drug in this unapproved, "off-label" way.
"The good news is, when you stop the drug, the effect wears off," said study lead author Dr. Peter Goadsby, professor of neurology at University College London. "So, as long as doctors know about it, and patients with cluster headaches on verapamil know they need EKGs [electrocardiograms] done, it is a completely preventable problem."
The study is published in the Aug. 14 issue of Neurology.
In a review of the medical records of 217 patients given verapamil to treat their cluster headaches, a team led by Goadsby found that 128 had undergone an EKG, 108 of which were available in the medical records.
Of those 108 patients, about one in five exhibited abnormalities (mostly slowing) in the heart's conduction system -- the "natural pacemaker" that causes the organ to beat. Most of these cases weren't deemed serious, although one patient did end up having a pacemaker implanted to help correct the problem. In four cases, doctors took patients off verapamil due to their EKG findings.
One in three (34 percent) developed non-cardiac side effects such as lethargy and constipation.
"It is a very nice piece of work, because it provides commentary on a boutique [that is, niche and off-label] use of the drug," said Dr. Domenic Sica, professor of medicine and pharmacology in the Virginia Commonwealth University Health System. He was not involved in the study.
Cluster headache affects about 69 in every 100,000 people, according to the Worldwide Cluster Headache Support Group Web site. Men are six times more likely than women to be afflicted, and the typical age of onset is around 30. According to Goadsby, the disease manifests as bouts of very severe pain, one or many times per day, for months at a time, usually followed by a period of remission.
Verapamil, a calcium-channel antagonist drug, is approved by the U.S. Food and Drug Administration for the treatment of cardiac arrhythmias and high blood pressure. The medicine is typically given in doses of 180 to 240 milligrams per day to help ease hypertension.
However, the patients in this study received more than twice that dose for the off-label treatment of their cluster headaches -- 512 milligrams per day on average, and one patient elected to take 1,200 milligrams per day. The treatment protocol involved ramping up the dose from 240 milligrams to as high as 960 milligrams per day, in 80 milligram increments every two weeks, based on EKG findings, side effects, and symptomatic relief.
Many patients may not be getting those kinds of tests to monitor heart function, however: In this study cohort, about 40 percent of patients never got an EKG.
Given the typical dosage, Sica said he was surprised so many patients were able to tolerate such high amounts of the drug.
"When used in clinical practice for hypertension, the high-end dose is 480 milligrams," said Sica. "Most people cannot tolerate 480."
Dr. Carl Pepine, chief of cardiology at the University of Florida, Gainesville, was also "amazed" at the doses that were tolerated in this study. "The highest dose I ever gave [for cardiology indications] was 680 milligrams. This might give me more encouragement to use the drug at higher dose," he said.
But Sica said he thought cardiac patients -- the typical verapamil users -- were unlikely to tolerate the drug as well as the patients in this study, because verapamil reacts differently in older individuals, who are more likely to have high blood pressure, than in younger patients. The average patient in the United Kingdom study was 44 years old.
According to Sica, two factors would conspire to make older individuals more sensitive to verapamil. First, the metabolism of the drug is age-dependent, meaning that older individuals would tend to have higher blood levels of the drug, because it is cleared more slowly than in younger individuals.
Secondly, the conduction system of the heart (the natural "pacemaker" becomes more sensitive to the effects of verapamil with age, Sica said.
"It's likely that an older population would not be able to tolerate the same dose," he concluded.
According to Goadsby, the take-home message of this study is simple: Be sure to get regular EKGs if you are taking verapamil for cluster headaches. Goadsby recommended EKGs within two weeks of changing doses, and because problems can arise over time -- even if the dose doesn't change -- to get an EKG every six months while on a constant dose.
"The tests are not expensive, and they are not invasive," he said. "They are not in any way a danger to the patient."
For the most part, Goadsby said, should a cardiac problem arise, it will typically go away once the treatment is halted."
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2. Imitrex: chest tightness is not unusual but is not a sign of impending heart problems. It has been reported and examined for a long time with the conclusion that this is a safe med.
Rebound with 2 uses is highly unlikely. What can occur is that an attack of long duration can "outlive" the effective duration of the meds effectiveness. Only working with your doc can resolve this issue, usually by shifting to a triptan with a longer effective life. Given the extraordinary effectiveness of this class of meds, they represent one of your best bets--if you work with your doc.
3. Melatonin: one of the most benign products we use. May or may not affect sleep--an inconsistent response--but still worth a try when you have a night time attack pattern.
If you can get it, 1mg. ergotamine tab one hour before bed is an old approach which often blocks night attacks.
4. Overall, it's critical that you stick with one medical regimen, making needed dosage adjustments, giving each med time to become effective (notably after a dosage change), before you make a judgment that it's not effective. Impatience is self-defeating.
5. Hope you are working with a headache specialist. Our messages are filled with problems neuros who lack education/training in treating complex headache disorders.
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LOCATING HEADACHE SPECIALIST
1. Search the OUCH site (button on left) for a list of recommended M.D.s.
2. Yellow Pages phone book: look for "Headache Clinics" in the M.D. section and look under "neurologist" where some docs will list speciality areas of practice.
3. Call your hospital/medical center. They often have an office to assist in finding a physician. You may have to ask for the social worker/patient advocate.
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; On-line screen to find a physician.
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Look for "Physician Finder" search box. Call 1-800-643-5552; they will send a list of M.D.s for your state.I suggest using this source for several reasons: first, we have read several messages from people who, even seeing neurologists, are unhappy with the quality of care and ATTITUDES they have encountered; second, the clinical director of the Jefferson (Philadelphia) Headache Clinic said, in late 1999, that upwards of 40%+ of U.S. doctors have poor training in treating headache and/or hold attitudes about headache ("hysterical female disorder") which block them from sympathetic and effective work with the patient; third, it's necessary to find a doctor who has experience, skill, and a set of attitudes which give hope of success. This is the best method I know of to find such a physician.
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6.
Here is a link to read and print and take to your doctor. It describes preventive, transitional, abortive
and surgical treatments for CH. Written by one of the better headache docs in the U.S. (2002)
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ALL NEW!! HEADACHE 2008-2009
The new 72 page Headache 2008-2009 is hot off the press! Click here to download the PDF instantly! (free)
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