How Was the Botox Mixed? A factor that many patients are unaware of is that Botox and Dysport come in a powder form that must be mixed with sterile saline to reconstitute the vial. The amount of water that is mixed with the Botox or Dysport can vary and will determine the concentration of the medicine. Some doctors and nurses dilute the powder too much so that the final concentration of Botox or Dysport is weak. So if you go to a provider who advertises a cheap price (for instance below the wholesale price) the injections you may be getting may be very dilute and may not be as effective as a more concentrated (more expensive) injection.
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.
Chronic migraines are what were formerly known as “transformed” migraines. These are near daily headaches, sometimes with migraine features but otherwise with frequent features of tension headaches. This may sound trivial but the treatment for tension headaches, typically with analgesics, would only make this syndrome worse. We learned that treating these with migraine preventive medications proved mostly effective. The current International Classification of Headache Disorders defines chronic migraine as a recurrent headache that has been ongoing for the past 3 months, occurs on at least 15 days per month, lasts at least 4 hours per day, and has 8 or more days per month when the headache has features of a migraine or responds to a typical migraine medication.
Severe side effects are very rare but can happen if the botulinum toxin unexpectedly spreads throughout the body from the site of the shots. This can cause muscle weakness, hoarseness or trouble talking, trouble saying words clearly, loss of bladder control, trouble breathing, trouble swallowing, double vision, blurred vision and drooping eyelids. The breathing and swallowing problems can be life-threatening. If this happens, seek medical attention right away.
Tell your doctor about all your medical conditions, including: plans to have surgery; had surgery on your face; have trouble raising your eyebrows; drooping eyelids; any other abnormal facial change; are pregnant or plan to become pregnant (it is not known if BOTOX® Cosmetic can harm your unborn baby); are breast-feeding or plan to (it is not known if BOTOX® Cosmetic passes into breast milk).