I've been taking the B12 vitamin for a couple of days now and it's awesome! I have noticeably more concentration and energy which helps since I've been actively been working out more. It comes in a dropper, so it is very easy to add to my morning juice. I love that is gluten/sugar and cruelty free! The price is really affordable and the delivery time was great, it just took 2 days to get to my home! Highly recommended!