Both cocaine and methamphetamines are central nervous system
stimulants. They both have the ability to cause increased heart rate
. Methamphetamine in particular can last for several hours, up to 24 hours. Cocaine however is a very short lived substance and its effects usually wear off within an hour.
Beta blockers won't help. Benzodiazepenes like valium
) can help but I'd recommend that you stay away from all drugs for now and come down naturally as it will go away. Don't panic, and don't have coffee, it is another CNS stimulant and will make it worse. Drink some water to keep yourself hydrated. Take some deep breaths, relax, and let yourself know that everything is going to be ok. You will be fine.
Yes I have been in this circumstance myself. If you need someone to talk to you can email me at firstname.lastname@example.org