The chemical structure of saxitoxin, drawn with TWSBI ECO fountain pens, and using Pilot Iroshizuku Kiri-same (dark gray) and Diamine Flamingo Pink (vibrant, dark pink) inks.

It's a gloomy day, so here's a #PenAndInkPoison to cheer me up, and hopefully it'll brighten your day, too. This is saxitoxin, a neurotoxin produced by marine dinoflagellates and cyanobacteria, and the cause of Paralytic Shellfish Poisoning, which can be fatal - the paralytic part should be obvious.

The chemical structure of coprine.

Ready for a post-Thanksgiving #ToxTuesday with some #PenAndInkPoison? And if you drank too much, then this one is for you! I present: COPRINE

The chemical structure of strychnine, drawn using a coral TWSBI ECO fountain pen with Diamine Flamingo Pink ink and a green Moonman T1 fountain pen with Robert Oster Marine ink (so vibrant pink and dark teal inks).

I loved doing toxic tales at the Bad Place and want to continue them here, too. So here's some #ToxTuesday and #PenAndInkPoison on the tale of strychnine, bitter beer, and misogyny in a bad death investigation. A long-ish 🧵