Yes, i had brainfog, but also my appetite was shot from the stomach bloating. I think there were die-effects too but that usually only lasts a couple days.
If you go on Albendazole just keep piece of mind that you are taking a medication that actually works. While everyone is different and it might not work for everyone, this is IMO an actual treatment. I wasted about 3 months of my life freaking out everytime i had to make a BM, everytime I ate the smallest thing, every time i had to throwup knowing worms were going to come up. Every itch or scratch you're constantly wondering whether they are migrating. It seriously takes a toll on your mental health.
Relax. Eat well (in fact you want to take albendazole with fatty foods). Don't look at your BM. Maintain cleanliness and wash all your sheets/linens if it makes you feel better. And be confident you are taking something that actually works. Just be sure whatever you do to take atleast one followup treatment as the eggs are the hardest to kill and can often hatch after taking only one course.