I NEVER buy from feed store or tsc or co-op, shipped overnight ONLY. I get mine from ft dodge. there are other brands that are probly just as good maybe even better, I have just never had any problems with them.
DO NOT give the shots with the lepto in them, under 12 weeks old. I give mine the 5 ways first couple then the 7 - 8 way.
I know that it doesnt do any good to give them shots before they are weaned, but i start mine at 4 weeks, 7 weeks, 10 weeks, then the final at 13 weeks, after that they will NEVER need another booster shot, and if your vet tells you they need one every year, he is diggin in your pocket,
and as far as shots goes, the 3 year rabbies is "exactly" the same thing as the 1 year just cost more.
I give the 8 in 1 at 8 wks and another a month later and I'm done. I don't do it in stages like they recommend. Also, never have lost a pup because of this method. I also have done it with only one shot but only with marginal pups and they have been fine. I wouldn't recommend it nor do I do this any more but I think one shot could be enough.
I used to order mine but Rocky's feed store in Brazoria has what you need if you live in that area. He caters to the dog man because he is an old hog hunter as well as the rest of his family.