When BOTOX (4, 8, or 16 Units/kg) was administered intramuscularly to pregnant mice or rats two times during the period of organogenesis (on gestation days 5 and 13), reductions in fetal body weight and decreased fetal skeletal ossification were ob served at the two highest doses. The no-effect dose for developmental toxicity in these studies (4 Units/kg) is approximately equal to the human dose of 400 Units, on a body weight basis (Units/kg).
In the third study, 25 patients with chronic migraine were injected with 12.5 doses of botox into each trigger point twice, during a period of 3 months. Frequency (main variable), intensity and scales of migraine crises were recorded one month before and one month after the treatment to compare the changes experienced. In addition, side effects were also recorded during the experiment, and they were found to be mild and temporary.
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.
Botox is a neurotoxin derived from the bacterium Clostridium botulinum. Ingested in contaminated food, it can interfere with key muscles in the body, causing paralysis and even death. But when injected in tiny doses into targeted areas, it can block signals between nerves and muscles, causing the muscles to relax. That's how it smooths wrinkles: when you immobilize the muscles that surround fine lines, those lines are less likely to move--making them less noticeable. It's also why it's FDA-approved to treat an overactive bladder: Botox can prevent involuntary muscle contractions that can cause people to feel like they have to pee even when they don't.
The 3rd Annual Migraine Moment Film Contest received a record-breaking number of film submissions this year. Each film delivered a unique message on living with migraine and how people cope with the symptoms that accompany this debilitating disease. At the 60th Annual Scientific Meeting in San Francisco earlier this year, Maria Galli was announced as the contest’s winner. Her powerful film, Invisible Hero, spoke to her strength and superhero-like qualities in fighting a disease that oftentimes makes her feel isolated and alone. In a recent Facebook Live hosted by the American Foundation, Maria Galli spoke with Dr. Bert Vargas, a Neurologist at UT Southwestern, about her experience living with chronic migraine and her outstanding work. [embed]https://www.facebook.com/americanmigrainefoundation/videos/1616373701807260/[/embed]
I tell my patients that it is not the total price that is important, but how many units are used. For instance, if a patient goes to a spa and pays $150 per area, that may sound like a great deal. However, when the patient ask how long the treatment is supposed to last, the spa responds "2 months". I have seen that many of those less expensive treatments often consist of around 10 units (and therefore carrying a "non-deal" $15 cost per unit!). So, what initially looks like a great bargain, is in fact just a treatment with an inadequate amount of Botox. Always ask your injector how many units they are using, so you can determine what price/unit you are getting. Experienced injectors know that there is no such thing as a standard amount of units, as everyone's facial anatomy and muscular strengths are variable, even from one side of the face to the other.
The recommended dilution is 200 Units/4 mL or 100 Units/2 mL, with a final concentration of 5 Units per 0.1 mL (see Table 1). The recommended dose for treating chronic migraine is 155 Units ad ministered intramuscularly using a sterile 30-gauge, 0.5 inch needle as 0.1 mL (5 Units) injections per each site. Injections should be divided across 7 specific head/neck muscle areas as specified in the diagrams and Table 2 below. A one inch needle may be needed in the neck region for patients with thick neck muscles. With the exception of the procerus muscle, which should be injected at one site (midline), all muscles should be injected bilaterally with half the number of injection sites administered to the left, and half to the right side of the head and neck. The recommended re-treatment schedule is every 12 weeks.
The 5-unit dose that is injected at each site is a very low dose. Earlier studies with total dosing below 155 units failed to show separation from placebo. As a result, I encourage all patients to get a minimum of 155 units, even if they have a small frame. The optional component of the injection paradigm is the 40 units that are used for following the pain sites. The pain sites are the temporalis, occipitalis, and trapezius. These can be held if the injector is concerned. I do not reduce the dose below 155 units as lower doses have not separated from placebo, and thus I may not achieve an adequate headache effect with a lower dose. In fact, most of the time I increase the dose to at least 165 units, as this was the mean dose in the PREEMPT trials. I inject 5 units behind each ear for a bilateral headache and 5 units in two sites behind one ear in a side-locked headache.
Dr. Schwedt believes ARMR offers hope for patients living with migraine. “ARMR data could lead to breakthroughs in the field,” he says. One hope for ARMR is that it will contribute to the ability for health care providers to use precision medicine to treat their patients. Clinical trials show which migraine therapies are overall effective for groups of people with migraine; however, health care providers are still working to understand which specific therapy is ideal for a particular patient. “One of the challenges we have in this field right now is being able to determine which exact therapy is going to be best for which patient,” Dr. Schwedt says. “For example, we might know that about 50% of patients will benefit from a specific migraine preventive therapy, but we don’t know in advance which 50% that is. I believe the data we’re collecting in ARMR is going to help us get to the stage where we can practice precision medicine, knowing which therapy is most likely to help an individual patient prior to the patient starting that therapy.”
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).
Botox is administered by injection and dosing depends on the condition that it is used for. Administration of botulinum toxin with other agents (for example, aminoglycosides, curare) that affect neuromuscular function may increase the effect of botulinum toxin. There are no adequate studies of Botox in pregnant women and it has not been evaluated in nursing mothers.
The one side effect that we most commonly see with Botox for migraine, ironically, is increased headache pain in the days immediately following the injections. Interestingly, some patients have the opposite effect, noticing immediate pain relief. That may be due to an acupuncture-like response, where poking needles into unhappy muscles actually makes them feel better.
Safety and effectiveness of BOTOX® have not been established for the treatment of other upper or lower limb muscle groups or for the treatment of spasticity in pediatric patients under age 18 years. BOTOX® has not been shown to improve upper extremity functional abilities, or range of motion at a joint affected by a fixed contracture. Treatment with BOTOX® is not intended to substitute for usual standard of care rehabilitation regimens.
How Long Do Botox Treatments Last? Before you begin you should know that effects of Botox last about three to four months. That’s all – when practitioners make claim that it lasts longer don’t believe them because it doesn’t. So when you factor in the cost of Botox or Dysport you should know that in order to maintain the beneficial effects of these injections you will probably repeat the treatment three to four times a year.
BOTOX is administered about every three months, and must be injected at the site of each nerve trigger, relaxing the surrounding muscles so that they won’t compress the nerve and trigger a migraine. It is a potent drug, and we only recommend using it if other preventative treatment options haven’t helped you. It is generally only administered to patients who have at least 14 headaches a month, or don’t respond to other treatments.
Serious and/or immediate hypersensitivity reactions have been reported. These reactions include anaphylaxis, serum sickness, urticaria, soft-tissue edema, and dyspnea. If such a reaction occurs, further injection of BOTOX® should be discontinued and appropriate medical therapy immediately instituted. One fatal case of anaphylaxis has been reported in which lidocaine was used as the diluent, and consequently the causal agent cannot be reliably determined.
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.