Vivarin 200 mg
Double Espresso (2 oz) 45-100 mg
Brewed Coffee (8 oz) 60-150 mg
Instant Coffee (8 oz) 60-80 mg
Tea - Black (8 oz) 45 mg
Coca Cola (12 oz can) 34 mg
Pepsi (12 oz can) 38 mg
(1 oz) Chocolate bar 30 mg
Cold relief tablet 30 mgs
Tea - Green (8 oz) 20 mg
Tea - White (8 oz) 15 mg
(1 oz) Milk Chocolate 6mg
Decaf Brewed 5.6 mg
Decaf Instant 2.5 mg
Caffeine ingested from Coffee/Tea will "kick in" after about 15 minutes...
It is completely absorbed within 30 to 45 minutes and then its effects diminish within about 3 hours.
Caffeine is highly addictive.
headaches, sleepiness, irritability, anxiety
Caffeine affects your stomach acid.
it is important to drink plenty of water and to get plenty of sleep