Sister here is some Information about eating Blackseeds, How much amount you need to eat, as far as I know, Is the amount you pick up by your pinky and thumb, and eat in an empty stomach, early in the morning. I hope It helps, and here are some more remedies.
Nice post, masha Allah. I learnt a lot. Is the hadith by Qatadah shahih?
I take habbas saudah if I feel sick only, and I take about 5 pills when Im about to sleep. Well...I just do it since I dont know any distinct rule from sunnah about using the habbas.