The fish named black drum has a pair of stones in its brain which are considered an effective means of dissolving kidney stones. Take 2 of these stones, beat them in a mortar, mix them with half a glass of freshly squeezed lemon juice and keep in the refrigerator for one day. Add a tablespoon of unrefined olive oil and drink an hour before breakfast.
When drunk for 3 days, it sheds all the kidney stones, regardless of their origin. If the stones are in the kidneys, the treatment can be carried out several times.