No more than 2,400 mg a day.
s&k
The general recommendation is no more than 2,300-2,400mg, but it's different for some people. Ask your doctor about it!
The recommended daily intake for sodium is 2400mg for a 2000 calorie diet. If your caloric intake is higher, you can also take in more sodium.
over 9000 units
Many Health Advisors Say An Average Teen Should eat 1800-2000 a Day
Most teenagers should have 32 to 40 grams of sugar which would be the equivalent to 8 teaspoons.