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Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate
Urinary Potassium (mmol/24 h)
Effectsa
50 ± 12
233 ± 45
Serum K within normal limits but 10% higher (p < 0.05) with K load
≈ 60
↑ Plasma K (p < 0.01) (from 4.3 to 4.6 mmol/L)
↓ SBP (p < 0.01); ↓ DBP (p < 0.01)
≈ 220
↑ Plasma renin in 13 of 16 subjects; no adverse effects identified
82
With high K diet, ↑ plasma K (p < 0.05); plasma renin and aldosterone, while increased significantly (p < 0.01) after
385
2 d, were back to baseline levels by 20 d
50
119
Serum K was within normal limits
Fasting plasma aldosterone levels ↑ with increased K regardless of Na intake; no other effects noted
59
Serum K was 10% higher (p < 0.05) on high K diet, but still within normal range
161
No other changes noted
58
139
4 patients withdrew from the study: 1 due to diarrhea from the K supplement; 1 due to ↑ BP when receiving placebo; 2 due to taste of K supplement
