Differences in gut metabolites and microbial composition and functions between Egyptian and U.S
As a co-therapy like in case of combined collagen crosslinking (CXL) and intrastromal corneal ring segment (ICRS) implantation to treat keratoconic eyes, no adverse effect from the riboflavin injections were reported (32)
Figure 4: Eating too much protein from animal products and nuts, along with a lack of B6, B9, or B12 vitamins, can interfere with the recycling of certain amino acids, like methylmalonic acid (MMA), and cause the release of harmful hydrogen sulfide (H2S)
for example, signs of serotonin syndrome (agitation, high fever, etc.) or signs of significant hemolysis (sudden weakness, dark urine other than the expected blue-green color, yellowing of eyes/skin) require urgent evaluation