Hello and welcome to HCM.
Thank you for your query.
Excessive red bull intake has reportedly caused cardiovascular symptoms like:
palpitation,
tachycardia,
chest tightness, breathlessness, etc. If your son has been experiencing
chest pain, it is best you take him to visit a doctor at the earliest. It is always better to be safe than sorry.
Expulsion of caffeine from the body takes 6-24 hours in an individual. Although there are many factors that can influence this duration.
I hope I have succeeded in answering your questions, you could write back to me anytime for further clarifications.
Best wishes.