Medicine - Mail / FedEx from U.S. to Philippines 2014

Are there any customs rules that prohibit my family from sending me my medicines from the U.S. to the Philippines? What are the requirements and paperwork needed to accomplish this as smoothly as possible.

are the medicines not available in philippines?it might depend what medicines you are referring to

The meds are fairly common but expensive. I get them at no cost in the US so I thought FedEx or DHL every 3 months is a good deal. I also am wondering how many months supply can I bring in with me on my original trip?

I'll be doing the same but using only LBC,it usually takes only 1 week