Red raspberry leaf tea. When combined with the other suggestions and used daily, at least in the week leading up to your period, it can work wonders! My daughter started "stealing" mine when I was pregnant. I found her a brand made for her stage in life, without the other ingredients. No, it isn't medicine in the modern sense, but it had been used in women's health for generations. 

Hi Jennifer,

Yoga has a lot of really good stretches to help build lower back muscles. I experience bad lower back pain often and I find yoga is the only thing that helps. I know you say it's just when she has her period but it could help.

:)

Chiropractic adjustments.

Exercise.

Heating pads.  Those single-use ones are very convenient--and also good during labor!

Magnesium before and during menstruation.  Calcium and magnesium are often put in a tablet together, and that is a nice combination. 

I can relate to your daughter! I'd also like to second Nicole - I have a retroverted uterus and since menarche have had terrible cramps and back pain. Once I began to take a women's multivitamin (Nature Made for Her) and magnesium (also Nature Made brand), it improved significantly. I only take the magnesium while on my period. The multivitamin alone plus a reasonably healthy diet should cover a woman's daily magnesium needs, unless she is an athlete who struggles with muscle cramps during sports.

I hope these answers help!

 Hi Jennifer,

I would suggest a hot water bottle, the electricity flowing through heating pads can exaccerbate cramps for some people.  I also think you should try a good calcium/magnesium supplement. These are two very deficient minerals in modern diets and magnesium in particular is very helpful for muscle cramping. I'd suggest Natural Calm, it's well known and works very well. Here is a link: http://www.calmnatural.com/natural-calm-16oz

She can also take epsom salt baths because they are full of magnesium which is absorbed through the skin. 

You should also consider a good B-complex supplement, as B vitamins are super important for all kinds of menstrual and reproductive functions.  

She could also have a tipped/tilted uterus (I have one and have struggled with terrible cramps in the past) which could be causing the back pain.  I suggest a chiropractor who can work on adjusting the uterus into a better postion. Sometimes they can be off!  Or even seeking out a Maya abdominal massage therapist who specializes in this kind of treatment.

Hope this helps! :-)

Nicole

 Heating pads, special teas and soaks are great.  Also doing Yoga and other activity will help a lot!