Been using lumbar pillows for years. They can help immensely. Some of the smaller inflate/self-inflate can be very useful for traveling (Planes - absolutely shitty seats. They’ve made millions of them. Why not design a decent one?).
The newer cars with the headrest canted forward for cervical support in a rear end crash are awful for folks like me. Personally I think they may contribute more to chronic neck pain than they save in acute neck pain. A lumbar support like you have pushes you forward and help minimize that problem.
Thrift stores are a good place to pick up cheap small pillows for dragging around and forgetting it in other people’s car and such. I won’t even go to a movie without one.
Been hooked on Centrum Silver since I power lifted in High school. Our coach kept saying “Got to have the material to build the body.” We also did GOMAD, gallon of milk a day. Most shouldn’t unless the body lets you. My Vet did his thesis on Glucosamine with dogs and found at saturation level the benefits kicked in. I take one with each meal and one when I get up and go to bed. I feel all those rice crispies go away in about 4 weeks. Not all bodies respond equally.