The answer is carbohydrates
Well think about it.... Pediatrics for example are most likely afraid or intolerant of different routes for exanple, not tolerating intravenous and being scared of intramuscular or other injection type things. They would probably be more tolerant of something not considered invasive for example subcutaneous or ingestion. A child body size and metabolism would also be quite fast at receiving the effects of such. Geriatrics do not feel as much pain and because of the slowed down metabolism probably would require routes that are much faster and would be more tolerant of more invasive routes. Pregnant women would probably prefer something slow acting or would not be metabolized at such a rate that it be dangerous toward the child.
Having low haemoglobin means less O2 is being sent to the blood and heart, which can reduce heart rate which is dangerous
My answer is Bill of Rights because if plato is right then he’s never wrong so that is my answer to the question.
A common answer would be either depression or post-traumatic stress disorder.