Honestly I didn't take it yet, but my husband scheduled today, He has positive thought about it and believe that it will help him from getting virus, it will protected him somehow, considering that the nature of his work used to be outside, going here and there. As for the effect I think majority of people who get vaccinated are all fine and they seems to be normal, at first they have some an usual effect like dizziness or feeling weak but after a couple of days they're fine.