Triplet-triplet annihilation upconversion (TTA-UC) is a promising photophysical tool to shift the activation wavelength of photopharmacological compounds to the red or near-infrared wavelength domain. in which light penetrates human tissue optimally. However. TTA-UC is sensitive to dioxygen. https://parisnaturalfoodes.shop/product-category/super-5-plus-lozenge/