title_body: Coffee and blood pressure
upvoted_answer: Caffeine is not that only drug that can raise blood pressure.  In fact many other drugs are much better at raising blood pressure and have fewer side effects.  If you are asking specifically about the chemicals in coffee, then yes, caffeine is the likely culprit if coffee causes raised blood pressure in an individual.  
  
  Tea and chocolate also contain caffeine, but of course lower concentration than what is found in coffee.  Eating large amounts of chocolate or drink large quantities of tea could have a similar effect to drinking moderate amounts of coffee.