"I have treated people with profound migraine headaches and it turns them right off," says Dr. Matarasso. "If you feel it coming on, it stops it, reducing the severity as well as the duration. I had a patient [who was] in college who had unremitting migraine headaches. She changed her diet, she changed her birth-control pill, she had acupuncture. I finally said to the mother, 'We need to try Botox,' and it has been a complete life-changing event for this woman."
Two preparations of botulinum antitoxins are available for treatment of botulism. Trivalent (A,B,E) botulinum antitoxin is derived from equine sources using whole antibodies. The second antitoxin is Heptavalent (A,B,C,D,E,F,G) botulinum antitoxin, which is derived from equine antibodies which have been altered to make them less immunogenic. This antitoxin is effective against all known strains of botulism.
Botox is an injectable drug made from a toxic bacterium called Clostridium botulinum. When you eat the toxin produced by this bacterium, it causes a life-threatening form of food poisoning, known as botulism. But when you inject it into your body, it causes different symptoms. It blocks certain chemical signals from your nerves, causing temporary paralysis of your muscles.
When the deal with Teva closed in August 2016, it left Allergan with $40 billion to spend. Some of that went to repurchase shares, while some went to a series of acquisitions that totaled about $6.5 billion. One of the bigger deals was for a company developing treatments for NASH, a liver condition that Saunders said would become "one of the next epidemic-level chronic diseases we face as a society."
There have been reports following administration of BOTOX® of adverse events involving the cardiovascular system, including arrhythmia and myocardial infarction, some with fatal outcomes. Some of these patients had risk factors including pre-existing cardiovascular disease. Use caution when administering to patients with pre-existing cardiovascular disease.
Contrary to popular belief, the bacteria that causes botulism, clostridium botulinum, is not part of the treatment, nor are six of the seven neurotoxins it secretes. The only substance used in Botox injections, botulinum toxin A, is carefully extracted, purified, and standardized into FDA-approved doses. Plus, the dosage is so small, it can't get beyond the muscle tissue it's injected into, meaning there's little if any chance for Botox to reach the bloodstream.
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Tell your doctor if you received any other botulinum toxin product in the last 4 months; have received injections of botulinum toxin such as Myobloc®, Dysport®, or Xeomin® in the past (tell your doctor exactly which product you received); have recently received an antibiotic injection; take muscle relaxants; take allergy or cold medicines; take sleep medicine; take aspirin-like products or blood thinners.
In fertility studies of BOTOX (4, 8, or 16 Units/kg) in which either male or female rats were injected intramuscularly prior to mating and on the day of mating (3 doses, 2 weeks apart for males, 2 doses, 2 weeks apart for females) to untreated animals, reduced fertility was observed in males at the intermediate and high doses and in females at the high dose. The no -effect doses for reproductive toxicity (4 Units/kg in males, 8 Units/kg in females) are approximately equal to the maximum recommended human dose of 400 Units on a body weight basis (Units/kg).
Botox gained popularity and notoriety as a wrinkle reducer in the late 1990s and early 2000s. But it wasn’t long before researchers recognized the potential of Botox for treating medical conditions, too. Today it’s used to treat problems such as repetitive neck spasms, eye twitching, and overactive bladder. In 2010, the FDA approved Botox as a preventive treatment option for chronic migraines.
The safety and efficacy of onabotulinumtoxinA for CM was demonstrated in the pivotal phase III Research Evaluating Migraine Prophylaxis Therapy (PREEMPT) trial. In this trial, patients were treated every 12 weeks whether or not their headaches had returned to baseline levels and the primary outcome period was after two treatment cycles. At baseline, these patients had more than 19 headache days, and after two treatment cycles, their headaches had been reduced by 8 to 9 days per 28 days. The responder rate analysis of the study population shows that about 25% of patients improved by 75% in terms of a reduction of migraine days. In my practice, I usually do three cycles 12 weeks apart, and only if there is no change in headache frequency after this, do I change treatments. In the pivotal trials, the first statistical separation from placebo occurred in the first 4 weeks. There is a small subgroup of patients who fail to respond to the first two treatments and only start to respond after the third treatment.4-10
Some doctors, however, say their experience with their own patients indicates Botox — which was approved by the FDA in 2010 to treat migraines — is quite effective for this purpose. Lawrence Newman, MD, a neurologist and director of the headache division at NYU Langone Medical Center in New York City, says many of his patients have experienced a significant decline in the number of headaches per month after receiving Botox. In many cases, he says, it has cut down that number by 50% and frequently more than that.
Since then, several randomized control trials have shown botulinum toxin type A to improve headache symptoms and quality of life when used prophylactically for patients with chronic migraine[88] who exhibit headache characteristics consistent with: pressure perceived from outside source, shorter total duration of chronic migraines (<30 years), "detoxification" of patients with coexisting chronic daily headache due to medication overuse, and no current history of other preventive headache medications.[89]
Cornea problems have been reported. Cornea (surface of the eye) problems have been reported in some people receiving BOTOX® for their blepharospasm, especially in people with certain nerve disorders. BOTOX® may cause the eyelids to blink less, which could lead to the surface of the eye being exposed to air more than is usual. Tell your doctor if you experience any problems with your eyes while receiving BOTOX®. Your doctor may treat your eyes with drops, ointments, contact lenses, or with an eye patch.
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