Calcio Oral Replacement Dosage in Clinical Contexts

Requerimientos de Calcio por Población

The American College of Cardiology recommends 1000 mg/day of elemental calcium for adults aged 19-50 years and men aged 51-70 years, and 1200 mg/day for women over 50 years and men over 70 years, with a maximum limit of 2000-2500 mg/day 1, 2
The National Institutes of Health recommends the same dosage for pregnant or lactating women as for their age group (1000 mg/day) 2
The upper limit of intake is 2500 mg/day for people under 50 years and 2000 mg/day for those over 50 years 1, 2

The American Gastroenterological Association notes that calcium carbonate contains 40% elemental calcium, is more economical and common 1, 3
The National Kidney Foundation states that calcium citrate contains 21% elemental calcium, with better absorption without food 3

The American Journal of Kidney Diseases recommends an initial dose of 1-2 g of calcium carbonate (elemental calcium) three times a day 4

The American Journal of Kidney Diseases suggests 1-2 g of calcium carbonate three times a day, along with calcitriol (up to 2 μg/day) after parathyroidectomy 4
Monitor ionized calcium every 4-6 hours during the first 48-72 hours post-surgery 4
Adjust phosphate supplement doses according to serum levels 4

The Journal of Hepatology recommends calcium replacement (<1 g of elemental calcium/day) or supplementation (1.5-2 g of elemental calcium/day) in women with low intake (<800 mg/day) 5
This may reduce the burden of preeclampsia, both early and late onset 5

The New England Journal of Medicine prefers dietary sources of calcium when possible (especially dairy products) 1, 2
If supplements are required, divide doses greater than 500 mg to improve absorption 3
Avoid taking calcium supplements with calcium-rich foods or phosphate supplements 6
In patients with kidney disease, monitor PTH levels to keep them within the normal range (10-65 pg/ml) 6

The New England Journal of Medicine notes that gastrointestinal effects such as constipation and abdominal distension are common 1, 3
There is a risk of nephrolithiasis with supplementation but not with dietary intake 1, 2
Possible cardiovascular risk with supplements, although evidence is inconsistent 1, 2
In kidney disease, monitor for hypercalciuria and nephrocalcinosis 6

The American Journal of Kidney Diseases recommends evaluating serum levels of calcium, phosphate, and PTH according to the clinical condition 4, 6
In post-surgical hypoparathyroidism, frequently monitor ionized calcium 4
In kidney disease, monitor urinary calcium to prevent nephrocalcinosis 6