My husband 76 has Alzheimer but refuses treatment. He will not see a doctor and he needs medication. What can I do "LEGALLY" to make him go?

Can other family members speak to him? With Alz. it is so hard to gauge what he understands and if he can make an informed decision.
I think the more people who understand the situation the better.

You can contact your adult social services people. They may be able to do a welfare check on him (and you?). They have some "teeth", if they see a problem, and can hopefully help you.
Carol