In November, the FDA held a two-day hearing asking for expert comment on the agency's rules concerning off-label drug use and marketing. Some said the practice paves the way for scientific progress and gives doctors and their patients much needed alternatives for hard-to-treat medical conditions. Others said that off-label drug use is primarily financially motivated and that it poses a serious threat to public health, particularly when drugs are used experimentally on children.
Botox has also been shown to prevent chronic migraines, but there, it's unclear exactly why Botox works. (For doctors, reaching a firm understanding of how Botox prevents migraines will be tricky, since they don't know for certain what causes the severe headaches in the first place.) "There were multiple clinical trials for migraines, and most of them failed," says Dr. Mitchell Brin, senior vice president of drug development at Allergan and chief scientific officer for Botox. "It took a long time to figure out where to inject and how much." Today people who receive Botox for migraine prevention get 31 injections in different spots on their head and neck. The effects of Botox can last about three to six months depending on the condition.
Overall, with the exception of Overactive Bladder (see below), clinical studies of BOTOX did not include sufficient numbers o f subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. There were too few patients over the age of 75 to enable any comparisons. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease o r other drug therapy.
According to the PREEMPT injection paradigm, 5 units of onabotulinumtoxinA is to be administered to two sites on each side for a total dose of 20 units across four sites in the cervical paraspinal muscle group near the midline. The first injection site is approximately 1 cm left of the midline of the cervical spine and approximately 3 cm (2 fingerbreadths) inferior to the occipital protuberance. The second site is measured approximately 1 fingerbreadth diagonally up at a 45° angle from the first injection. The injections should be administered in the most superficial aspect of the muscle, angling the needle 45° and superiorly. To aid in the placement of the injections, the patient should be positioned upright with the head in a neutral position. If the neck is flexed too far forward, injections may be too deep. Injections that are too low or too deep in this muscle group can lead to muscle weakness and neck pain. Injectors should use a suboccipital approach to ensure that the injection sites are not too low. In addition, a horizontal line can be visualized across the neck, approximately 2 fingerbreadths down from the occipital protuberance, to make certain the injections remain above the line and are not administered too low in the neck. The higher these injections are, the more likely that they will be in the muscle fascial condensation, which will minimize the potential for neck weakness. These injections should not be done below the hairline. Patients who have trigger points in the neck should not be injected at these sites as these are generally areas where muscles may be weakened and injections of onabotulinumtoxinA at these sites might worsen their neck issues.
Formation of neutralizing antibodies to botulinum toxin type A may reduce the effectiveness of BOTOX treatment by inactivating the biological activity of the toxin. The critical factors for neutralizing antibody formation have not been well characterized. The results from some studies suggest that BOTOX injections at more frequent intervals or at higher doses may lead to greater incidence of antibody formation. The potential for antibody formation may be minimized by injecting with the lowest effective dose given at the longest feasible intervals between injections.
The potency Units of BOTOX (onabotulinumtoxinA) for injection are specific to the preparation and assay method utilized. They are not interchangeable with other preparations of botulinum toxin products and, therefore, units of biological activity of BOTOX cannot be compared to nor converted into units of any other botulinum toxin products assessed with any other specific assay method [see WARNINGS AND PRECAUTIONS and DESCRIPTION] .
"There is a difference in pricing based on the duration of the results," says L.A.-based injection specialist Lisa Goodman. (FYI: She's incredible, and I emphatically recommend seeing her if you're in L.A. or Dara Liotta, MD, if you're in NYC.) "The longer-lasting formulas cost more upfront. Shorter-term fillers can last from six to 11 months based on the patient's rate of aging (i.e., smoking, drinking, sun exposure, genetics), while the longer-term fillers last about one to two years."
How long the results from a Botox treatment last depends on the dosage and application. If Botox is too diluted and you don't get the proper units of Botox injected, the results might not last very long at all. If you get Botox for the wrong kind of wrinkles (i.e. static wrinkles) or an improper dose for your anatomy, you might not see much improvement either. In general, if the right amount of Botox is injected by a skilled doctor in the right muscles, Botox results can last 3-4 months.
Allergan Plc engages in the research, development, and manufacture of pharmaceutical products. The firm offers products under the following brands: BOTOX, Juvederm, Linzess, Namenda, Restasis, Latisse, Teflaro, Lo Loestrin Fe, Bystolic, DORYX, Saphris, Fetzima, Namenda XR, Namzaric, Viberzi, Viibryd, Alphagan, LUMIGAN, ESTRACE Cream, Rapaflo, Asacol, DELZICOL, Zenpep, Avycaz, and Dalvance. Its brand portfolio delivers treatments that address unmet medical needs in therapeutic categories such as dermatology and aesthetics;Read More
Not to be evasive, but the cost varies between physicians depending on how much Allergan product they purchase in a year. In general, it will probably be from $500 to $550 for a 100 unit vial. The equipment required to properly inject botox is not cheap, since it takes specialized syringes and needles that aid in precision and comfort. And properly trained staff and appropriately-medical... READ MORE
Sarah of My Migraine Life is a mom living with chronic migraine and daily headaches who has tried a gamete of medications, alternative therapies and lifestyle changes. These experiences led her to write “My Migraine Life,” a website for people living with migraine and their caretakers devoted to telling stories, raising awareness, giving support, product reviews and more. My Migraine Life is a partner of the American Migraine Foundation.
The recommended dilution is 200 Units/2 mL, 200 Units/4 mL, 100 Units/1 mL, or 100 Units/2 mL with preservative-free 0.9% Sodium Chloride Injection, USP, depending on volume and number of injection sites desired to achieve treatment objectives (see Table 1). In general, no more than 50 Units per site should be administered using a sterile needle (e.g., 25-30 gauge) of an appropriate length. Localization of the involved muscles with electromyographic guidance may be useful.
The co-primary endpoints were the average of the change from baseline in modified Ashworth Scale (MAS) ankle score at Week 4 and Week 6, and the average of the Physician Global Assessment of Response (CGI) at Week 4 and Week 6. The CGI evaluated the response to treatment in terms of how the patient was doing in his/her life using a 9-point scale from -4=very marked worsening to +4=very marked improvement).
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It is not known whether BOTOX® is safe or effective to treat increased stiffness in upper limb muscles other than those in the elbow, wrist, fingers, and thumb, or in lower limb muscles other than those in the ankle and toes. BOTOX® has not been shown to help people perform task-specific functions with upper limbs or increase movement in joints that are permanently fixed in position by stiff muscles. BOTOX® is not meant to replace existing physical therapy or other rehabilitation that may have been prescribed.