The link between caffeine and high blood pressure is somehow controversial. There are some studies that show that the intake of caffeine will increase blood pressure, while others say it doesn’t. Having two different results might be due to the fact that there are certain people who are caffeine-sensitive. These people will show a raise in their blood pressure upon ingestion of this additive. On the other hand, there are also people who show absolutely no change in their blood pressure readings.
However, what we know is that caffeine is a stimulant. This means that it might push your blood pressure up. The best thing you can do to yourself is to limit yourself to moderate amounts.
Do not intake more than 100mg of caffeine daily. That amount is equivalent to a 6-ounce cup of brewed coffee or 2.5 cups of black coffee. Soft drinks wise, that is about two 12-ounce cans. Well, in my opinion, the best is to eliminate any soft drink consumption.