No, but to be honest I was probably on too low a dosage anyway. However, I've taken other medications like moxonidine (in hopes of helping out with hh), this is an Imidazoline receptor blocker intended to lower sympathetic output and they think now that clonidine at least partly is too (I came across this drug while searching after clonidine). Moxonidine is primarily used to lower BP, which was ok since I have a standard fairly high blood pressure of about 150/90 all the time anyway (and I'm 23, don't smoke, no overweight). The standard dosage is 2mg/day, max is 6 a day. I first took 2mg for two weeks and after I took 4 mg for two weeks, including in the morning of the day I had a BP test to check if it was ok...My BP was still 136/84 that time, so really not that much affect at all.
I wouldn't worry about it too much, then.
If you decide to try it out could you keep us posted? I dismissed clonidine after it didn't work for me, but now I found out my doc was giving me a way too low dosage I'm thinking maybe I should go back on it.