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Kesizlin is actually a veterinary drug that causes animals to be anesthetized. Although approved by the FDA, the drug is not safe for human use. The substance is similar to the addictive drug ketamine. The effect of the substance is similar to that of the drug fentanyl (which is 100 times stronger than morphine). It causes sedation-like symptoms, such as excessive sleepiness, depression or difficulty breathing.
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One of its prominent side effects is skin decay. The raw wounds that appear from using the drug can turn into dead skin and may even cause amputation if not treated. In addition, excessive use of it damages all internal systems and can cause death due to system collapse.