What is the recommended amount of sodium that a person who has pre-hypertension should consume daily?

Qtr tsp (1,500 mg): Sodium should be reduced in prehypertension to 1.5 g (1,500 mg) per day (about 1/4 of teaspoon salt). That goal can be hard for some people to achieve, and if you find that the case, a more realistic may be < 2.4 g/day (so many sources of food contain dietary sodium, like canned soup; also be aware that some foods labeled “No Salt” may contain trace sodium from additives).

How much is 2 much: If you are worried about high blood pressure, you should not exceed 2000mg of salt/day. This is approximately 1 teaspoon (a little less actually).