@webuildtogether,
Hi, I am Allan William.
There is not just one factor for back pain, but a huge list of factors that lead to back pain. There can be various reasons like the wrong posture while sitting or driving, improper sleeping positions, hectic life with no relaxation, accidental jerks, previous injury, and a lot more.
One thing to keep in mind while treating such pains is to always prefer generic medicines along with physiotherapy.