A randomized, double-blind, placebo-controlled study of Ten-Cha (Rubus suavissimus) on house dust mite allergic rhinitis

Ingestion of Ten-Cha had an effect on allergic rhinitis, but the effect of Ten-Cha was limited and did not differ significantly from placebo. These results suggest that Ten-Cha does not exhibit an effect equivalent to mast cell-stabilizing drugs at the dose used in this study.