I get headaches after any kind of deep cleanse-- including Reiki Massages! I found out later that any type of cleanse (including Reiki treatments) dislodge and free the body of toxins. The dislodged toxins arent able to exit yet--so they indirectly affect things in the body creating headaches, dizzy spells, and fatigue.
Also- when you kill parasites, naturally you will be getting toxins from the dead worms.
What to do is start colon cleansing even before or the same time you are parasite
cleansing. If you can locate someone near where you live that gives colonics
(many places only charge about $50.00 a colonic
treatment and these are more thorough than enemas - and incredibly good for you) that would be super great-- since all your toxins dislodged from the cleanse will exit quickly before it can cause die-off.
Also-- taking a hot bath in Epsom Salts
/baking soda (baking soda is to prevent toxins from being absorbed back into the body) as well drinking plenty of distilled water (preferrably) or at least spring water and herbal teas made with distilled or spring water daily in between meals will also help flush out toxins.
The other day I had a headache caused from crying for 2 hours -- I guess my blubbering dislodged some toxins because crying is a type of cleanse. Well, you know what helped lessen the headache? GT Dave's Kombucha tea! I had a bottle of cranberry /kombucha and sipped on that.
When I used to get migraines alot years ago, what also helped me was rubbing strong peppermint oil all over where the headache was. That also helped back then too.