i did research
Most common causes of the discolouration include: Medications amino-salicyclic acid derivatives mesalazine/paraaminosalycylic acid/sulfasalazine doxorubicin , hydroxocobalamin , ibuprofen, phenothiazines, phenolphthalein, propofol , rifampicin/rifampin Dietary ingestants beeturia , rhubarb, blackberries, food dyes Metabolic abnormalities porphyria , urate crystals Hydroxocobalamin Early features of cyanide poisoning include nausea, vomiting, headache, dyspnoea, tachypnoea, hypertension, tachycardia, collapse and seizures
doi: 10.1007/s10517-011-1332-x
This targeted approach makes it a more refined and potentially safer option for weight loss