Is it my imagination or have I seen quite a few people relate problems with taking dewormer in the MH forum only to be quelled with the standby phrases..."die off" or"healing crisis"?
WIth so little info to go on this can be quite dangerous advice.
Could be that the person is overtaxing the liver, or it could be due to indiviual bioincompatability. To maintain that one product (sold by the forum owner) is good to take by *all*, is not responsible advice. Buyer beware.