Efficacy of Twinkle Eyez Supplementation in Improving Ocular Health and Immunity

The intervention supplement consisted of marigold extract, zeaxanthin, elderberry extract, bilberry extract, lycopene extract, multivitamin, silicon dioxide, inulin, and dextrose monohydrate, all in powder form and packaged in individual sachets (Twinkle Eyez™; Xmegami, Selangor, Malaysia). Each sachet contained 4.6 mg of lutein and zeaxanthin and 15.4 mg of elderberry extract.

The placebo supplement was identical in composition but excluded the active ingredients.