Fampridine (extended release pill version of 4-aminopyridine) was approved today.

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HAWTHORNE, N.Y., Jan 22, 2010 (BUSINESS WIRE) -- Acorda Therapeutics, Inc. (Nasdaq: ACOR) today announced that it has received marketing approval from the U.S. Food and Drug Administration (FDA) for AMPYRA(TM) (dalfampridine), an oral treatment to improve walking in patients with multiple sclerosis (MS). This was demonstrated by an increase in walking speed. AMPYRA demonstrated efficacy in people with all four major types of MS (relapsing remitting, secondary progressive, progressive relapsing and primary progressive). AMPYRA can be used alone or with existing MS therapies, including immunomodulator drugs.