First, it was used to treat strabismus and blepharospasm, two eye muscle disorders. Later it was used to reduce wrinkles, as well as cure migraine headaches and treat hyperhidrosis and incontinence. But while some may call it a wonder drug, it’s no wonder why regulators took a long hard look at Botox(onabotulinumtoxinA) and has fined the product’s maker, Allergan, hundreds of millions of dollars. Yesterday, Allergan agreed to plead guilty to a single misdemeanor “misb...