RNA is a molecule that helps cells make proteins. Supplements usually come from yeast. Companies market them for memory, athletic recovery, and cellular health, but the science behind these claims is thin and mixed.
You can find RNA as capsules or powders, sometimes blended with other nucleotides. Doses vary, and there is no standard amount to take.
Taking RNA can raise uric acid levels, which may trigger gout or stress the kidneys. Anyone with kidney disease or a history of gout should skip these supplements. Because safety data is scarce, pregnant and breastfeeding women should also avoid them.