A double-blinded, randomized, placebo-controlled pilot study of the safety and efficacy of Myobloc (botulinum toxin type B)-purified neurotoxin complex for the treatment of crow's feet: a double-blinded, placebo-controlled trial.


Crow's feet develop with age and are one of the earliest signs of the normal aging process. Botulinum toxin type A, approved by the Food and Drug Administration for the treatment of glabellar wrinkles in April 2002, has been used off-label to treat facial wrinkles since 1981. Botulinum toxin type B (BTX-B, Myobloc) was Food and Drug Administration-approved… (More)


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