I work with quite a few people from the Philippines and talk about natural cures sometimes. One natural herb in the Philippines is called Sambong, or Blumea balsamifera scientifically.
What caught my attention is that not just one person mentioned how it helped their parent dissolve kidney stones, but multiple people had the same results.
After looking it up, hearing, and reading that it's an approved herbal medicine prescribed by doctors in the Philippines for kidney stones from their pharmacies, I could not find many places that sold the herbal helper.
It not only helps with kidney stones, but colds, hypertension, sore throats, worms, boils, and diarrhea. I'm mainly concerned with kidney stones, cause those can cripple a person from severe pain (usually lower back) and may cause an infection when passing stones throught the urethra.
I've only found some links to Sambong tea and Indonesian raw Sambong. There are other sources that sell a tiny bottle of the stuff at a very high price $~50, when it's relatively cheap in the Philippines.
The pill form is called Sambong Forte found in the Philippines. I know of someone that could benefit from Sambong, but it's difficult to find online from a reputable source. It's approved by Philippine Department of Health (DOH) and readily used according to the few natives of the land as a prescription and over the counter herbal medicine.