Colon Cleansing / Psyllium

Hello,
I am a 38 yr old female who has suffered from constipation for several years.  I finally decided that I had to get the problem under control so I purchased a colon cleansing kit that contained an anti-parasite formula, a Psyllium powder drink along with a mild senna tea for before bedtime.  I used the kit for one month and it worked great, then decided to try store brand Psyllium Fiber powder in order to save some money which worked equally well. So I've been taking one generous dose of Psyllium powder per day for about a month and a half now...and have had no problems going to the bathroom.  I go at least once, if not twice per day.... and it's wonderful!!  

I have noticed however that I am experiencing alot of foul smelling gas.  I am wondering if the gas is due to the fact that my intestines are in the process of being cleared and that of alot of old debris is being stirred up along with bacteria causing the gas, or if maybe something else is going on...  

Any ideas?

[boron]

You may have an experiment.

Drop Psyllium for a week, and eat whole-grain bread instead of it.