I took it about a month or so and got desparate at the end of the process and started to double the dosage for maybe a week or so and that is when I started feeling my scalp go numb and I took a shower and bunches of hair started falling out. It took about a week and a half before 99% of it was gone...Horror is right! And it really did not seem to help like Praziquantel helps. I am staying on that for now. I have Tapeworms in my brain and most of my body. This does kill them and I also use Lugol'sIodine to switch things around and also L-Cysteine to kill them.