I love this multivitamin. I first took it earlier this year for extra protection from COVID when I was in Arizona for the winter even though I was triple vaxxed. I had been on it 3 weeks or so taking 4 capsules a day when my sister and her husband both got COVID. I was staying with them at the time
and I remained negative when tested. I believe this multivitamin kept me safe. I gave it only 4 stars though because it tastes awful and you should take it after meals because it can cause some nausea if you take it on an empty stomach (at least for me it did).