But it doesn't sound like that's what is happening to you if you're following the reccommended dosage. Anxiety is the opposite of what hydrocodone is supposed to do, normally it gives you a calming, sedated feeling... There are issues with generic hydro's vs. Brand names in what types of fillers they use... Sometimes generics have less of the active ingredient than the brand names and have been accused of causing withdrawls - which could be what you're experiencing... Watson's are the most common generics by far - here's a chart I found of what they supply (brand names) if you want to compare your prescription to it... Could help if you've changed pharmacies or gotten a refill of a different type...

good luck and I hope things work out for you... :)