As a reminder, be sure to properly give content warnings and put sensitive subjects behind proper spoiler tags. It's for the mental health of not just your comrades, but yourself as well.
Here is a screenshot of where to find the spoiler button.
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Have you considered alternative blockers? If it weren't for spiro would you even think about changing to mono?
Also, insulin syringes are really good. I never injected my whole life, and the first time I used an insulin syringe I was already a professional injecter.