Yep, been on that for awhile, sigh...as well as a ton of other stuff (CoQ10, ALA, LDN, Dynacirc, Azilect, folic acid, etc. etc. etc.) Even grew our own fava beans this season, was kinda hit or miss, although we have ordered the fava bean juice from International Gourmet and are hoping it will extend the sinemet dose a bit. Someone here said it extended their sinemet three hours-wow!