Because of your pets health. If you have a 26lb dog receiving a pill for 26-50lb dogs, not only are you giving them double the necessary dose of neurotoxins and pesticides, but you are giving them an *entire months* worth up front. An entire months dose for a 50lb dog. These things *could* be given on a weekly basis at a dose intended for a 26lb dog.
Making the world better, one answer at a time. I am a sixty one year old woman who is in good health. I received a tetanus shot yesterday and hours later I was feeling a bit tired. Romany Sedhom.
It consists of 5 injections, one when you're 5, one when you're ten, one when you're fifteen then it's up to you to get yours done when you're 25 and 35 (or 40) or leave it and just have a booster shot every 5 - 10 years. A booster tetanus shot should be had every five to ten years. However, if you are 40 or under, you should technically be immune to tetanus because of the new vaccine brought out.