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perpetual_ennui

perpetual_ennui

Time heals nothing...
Aug 16, 2023
3
Looking to CTB some time later this year with around 16g of propranolol (I have a lot, don't ask me how: and no I'm not sharing). Just wondering whether anyone knows of the real lethality of this and whether it's comparable to SN. I've read that propranolol can lead to lethal cardiac arrythmias at doses greater than 2g but I can only find a few studies pointing to this. I only really have one shot at this so I've got to get it right the first time.
 
unluckysadness

unluckysadness

Enlightened
Jul 9, 2025
1,626
I take propranolol too everyday (for my heart issues). But I wouldn't recommend it for ctb. We're not sure if it's 100% reliable. Modern drugs are designed to be non-lethal, even if you take a huge amount. But it could work. It's just a gamble. I wish you peace whatever you decide.
 
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carfemtanyl

carfemtanyl

Experienced
Nov 18, 2025
220
I found a few LD50s of around 600mg/kg so you would need to ingest 42 grams as a 70kg person to have a 50% chance of dying
even aspirin has a lower LD50 than that
 
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perpetual_ennui

perpetual_ennui

Time heals nothing...
Aug 16, 2023
3
I found a few LD50s of around 600mg/kg so you would need to ingest 42 grams as a 70kg person to have a 50% chance of dying
even aspirin has a lower LD50 than that
What study are you referencing? I'd like to read it. Also remember the dose change necessary when converting from animal to human due to the body surface area difference; I don't think you did that.
 
fadedghost

fadedghost

Found SaSu after reading BBC & watching YouTube
Dec 10, 2025
990
What study are you referencing? I'd like to read it. Also remember the dose change necessary when converting from animal to human due to the body surface area difference; I don't think you did that.
An LD50 value determination is never a perfect science. @carfemtanyl probably gave you a great answer. Your amount isn't off the LD50 by 3 percent.
 
hevnsfall

hevnsfall

Cat mom
Jul 18, 2026
91
I have read one or two posts on reddit in the suicidebereavement sub about people succesfully OD on propranolol and metroprolol. It can still be a gamble.
 

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