I also got a rippin' bad headache, and unfortunately didn't ride it through but took one Motrin tablet and felt better asap. Continued on with the reg. dosage and the headache has not returned. Felt alot like I would imagine a migraine would feel. I also think that night I took a lax tea and pushed out whatever was in me....and have felt much better ever since.
I do childcare for others so living with a headache was not an option at all....and why the humaworm works well for me!