Tetracaine is used as a surface anaesthetic of mucous membranes - for example for minor procedures in the mouth or nose.
Manifestations:
Medicines
The effect lasts for several hours. It is about ten times more effective than procaine, but also ten times more toxic, which is why the maximum single dose of 20 mg must not be exceeded. In the case of mucosal injuries, absorption is very rapid, so that there is a risk of poisoning in the case of overdoses.
If you want to be sure that your cocaine really only contains cocaine and in what dose, you should have it chemically analysed.