When giving the best start to newborn calves during calving through the months of January, February, and March this ORAL supplement makes me and the calves so much more happy. Previously selenium, vitamin a d & e and b12 have had to be given by an injection. FInally, no more! Almost every one of our purebred pairs goes through the calving barn, making health a number one priority by trying to give them the best start possible. We use the BOVILIS® NASALGEN® 3-PMH for a respiratory vaccine along with Vitaferst-Care before they go out of the barn and I am happy to say the results were very satisfactory. It was one of the best years for healthy calves, many variables could play a part, but having this product being so easy to give, every calf received a dose and makes me believe in it, and I recommend it to others. At that early age no negative association between human and calf are learned and no mothers down your neck when the calf bawls getting a needle either.