I've torn both of mine.
Cortizone helps and it helps instantly and last for a few weeks. 800mg Motrin will also help quite a bit, but be careful and always take it with food as it can damage your stomach lining if you take it by itself.
Physical therapy helps, they give you exercises with light weights and then a massage and maybe use a TENS unit to help promote the healing.
https://youtube.com/watch?v=GQ7l85g7EBQ