5 Rare Old Medicines That Had Horrific Side Effects

3. Picrotoxin.

Picrotoxin is found in the Anamirta cocculus plant. The symptoms from its use were well-known but delayed.The first signs of poisoning included vomiting, increased salivation, rapid breathing, and a slowed heart rate with palpitations. Following this was unconsciousness and then violent seizures with periods of respiratory paralysis, which only ceased a few moments later.