Are you against or for using animals for medical research?

Nowadays, a lot of laboratories use animals  to analyze how are results of the product that they want to sell and if it has secondary effects because animals are too much similar to humans than other things although it can be dangerous for them.

I´m against these experiments but there are arguments both for and against. I´m in favour of trying first the medication before giving it to humans but they can try it in another way, no in animals. In addiction a lot of rabbits, dogs, little mouses, monkeys and more die due to this experiments or they may get sick.

All in all, the laboratories have to try to work without hurting and I think it might be possible.