IL1B and Tinnitus: However, IL-1β protein levels in the IC were significantly decreased in the Spirulina group (0.91±0.07 versus 1.45±0.18, p = 0.001) and in the C-PC group (0.56±0.01 versus 1.45±0.18, p<0.001), compared with the tinnitus group (Figure 8).