A placebo-controlled, double-blind post-approval 52 week study with BOTOX 100 Units (Study NDO-3) was conducted in non-catheterizing MS patients with urinary incontinence due to detrusor overactivity associated with a neurologic condition. Catheterization for urinary retention was initiated in 15.2% (10/66) of patients following treatment with BOTOX 100 Units versus 2.6% (2/78) on placebo at any time during the complete treatment cycle. The median duration of post-injection catheterization for those who developed urinary retention was 64 days for BOTOX 100 Units and 2 days for placebo.
Dosing in initial and sequential treatment sessions should be tailored to the individual patient based on the patientâ€™s head and neck position, localization of pain, muscle hypertrophy, patient response, and adverse event history. The initial dose for a patie nt without prior use of BOTOX should be at a lower dose, with subsequent dosing adjusted based on individual response. Limiting the total dose injected into the sternocleidomastoid muscle to 100 Units or less may decrease the occurrence of dysphagia [see WARNINGS AND PRECAUTIONS].
Getting Botox takes only a few minutes and no anesthesia is required. Botox is injected with a fine needle into specific muscles with only minor discomfort. It generally takes three to seven days to take full effect and it is best to avoid alcohol at least one week prior to treatment. Aspirin and anti-inflammatory medications should be stopped two weeks before treatment as well in order to reduce bruising.
In general, the initial effect of the injections is seen within three days and reaches a peak at one to two weeks post-treatment. Each treatment lasts approximately three months, following which the procedure can be repeated. At repeat treatment sessions, the dose may be increased up to two-fold if the response from the initial treatment is considered insufficient, usually defined as an effect that does not last longer than two months. However, there appears to be little benefit obtainable from injecting more than 5 Units per site. Some tolerance may be found when BOTOX is used in treating blepharospasm if treatments are given any more frequently than every three months, and is rare to have the effect be permanent.
Results will be evident within three to 10 days. Photographs may be taken before the procedure so that patients can check their results themselves rather than relying on their memory. It is surprising to see how many people do not recall how they looked before the procedure and are amazed at the difference when shown a picture. Prior to having the procedure done, the patient should realize that Botox does not actually erase lines but relaxes them. What this means is that deeper lines will become somewhat less deep and superficial lines will nearly disappear. This can be likened to the act of steaming a garment's wrinkles rather than ironing them.