What can i do to cure lower back ?

Depends: There are many potential causes of lumbago or low back pain. The most common causes are related to strain or injury to the mucles and/or structures of the lower spine. While a "cure" often depends on the actual cause, prevention can be obtained by maintaining a healthy weight, good flexibility, and a strong core. See your physician if you have pain greater than 2 weeks.

Good question: Low back pain treatment varies depending on the cause. Most low back pain can be taken care of with ice, stretching and over the counter Ibuprofen (motrin). Back pain can be caused by kidney problems, bowel issues or even gynecological issues. These cause of low back pain won't be "cured" until the primary cause is addressed.