Drinking baking soda all the time especially with meals can decrease acid levels in the stomach which can cause indigestion. Yes baking soda can cause a rise in blood pressure too been there done that. Ive noticed it also can be irritating to the kidneys if done all the time.
The best way to alkalize is deep green veggies or sea veggies or sea salt. Balance!--people get in to trouble when they become too alkaline or too acidic. Candida can adjust to an alkaline or acidic environment. Candida Yeast form likes an acidic environment..but can switch to the fungal form to thrive in a alkaline environment. The best environment for friendly bacteria is slightly acidic, thats why its called "ACIDdophilus. When i became too alkaline I became constipated. Too acidic can cause joint + muscle pain and mineral loss.
There is another angle to this. Which brand of baking soda are you using? Unless it specifically states aluminum free on the box, it contains aluminum picked up from the processing.
Arm and Hammer is one of those with aluminum.
Baking soda does not contain aluminum. Some baking powders do.
Drinking baking soda is a bad idea for so many reasons. One you are going to neutralize your stomach acid leading to a number of health issues:
http://curezone.org/forums/fm.asp?i=1581539#i Secondly that is a lot of sodium, which can lead to an electrolyte imbalance. It is the excess sodium that is likely causing the headache. And drinking baking soda can lead to a state of alkalosis, which is also very dangerous. This is why I have such a problem with the Acid/Alkaline forums. These forums are not about balance but rather about creating an alkaline state, which is not as healthy as they claim and as you have seen can be quite dangerous. Lay off the baking soda and allow your system to recover.