Kidney stones are small, crystalline, hard, stone-like lumps that form inside the kidneys. They are developed when waste products are collected instead of deposited properly inside the kidney. Smaller kidney stones are rarely painful and are usually passed through urine. Larger kidney stones, however, can stay and cause severe pain in the abdomen and vomiting. Larger stones are broken up via ultrasound, or taken out by surgery.
There is little research into the use of cannabis or cannabinoids for kidney stones. There have been some reports of patients using medical marijuana for treating the pain and nausea associated with kidney stones, and historically cannabis has been used as a way to facilitate the excretion of small kidney stones.
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