parasites lay thousands and millions of eggs per day. It's going to take at least 3-6 months to eradiate them by 80% if you keep up an alkaline diet (eg, no sugar, no bread, no alcohol).
I've been on a parasite cleanse for one month, and I still see Tapeworm segments every single day in my stool.
You do not need to keep taking albendazole. You only need to take it twice. Once to eradicate the mature worms, then two weeks later to kill the eggs. However, the timing of when the eggs hatch varies, so many eggs can still hatch and not be killed.
However, I've only seen a tremendous amount of Tapeworm segments when taking fluconazole (Diflucan) and Metronidazole. I think this may be because parasites co-exist with yeast, and yeast and bacteria makes them proliferate in your body.