While there are claims that cranberry juice helps cure gout, studies show that cranberry juice in fact increases levels of uric acid and lowers urine pH, according to Best Gout Remedies. Gout results from high levels of uric acid in the body forming crystals which then settle into joints causing inflammation and pain. Since cranberry juice increases uric acid levels, it would exacerbate, not cure, a gout attack.
A study was performed in Germany using 12 healthy males who drank 330 ml of cranberry juice a day for 20 days. Their uric acid levels rose by a half over their prior uric acid levels. There was no change in the excretion of uric acid in their urine while taking cranberry juice, as stated by Best Gout Remedies.