Hmm, It could very well be a die-off reaction- toxins from the dying worms affecting you.
How soon after you take your dosage does this happen? If it happens only about an hour after a dosage- maybe its a sensitivity to one of the ingredients in paranil.
I'd drink alot of water between cleanses.
What ingredients are in Paranil? If this isnt giving you results- no dead worms in the toilet, but just constant reactions like this- maybe switch to something like Paragone- or try MH's dewormer.