Microencapsulated calcium, 1389 mg orally (10% protein and 90% calcium carbonate, corresponding to 500 mg of calcium element per tablet). There will be 2 doses of 1389 mg each orally, to make a total contribution of 1,000 mg. of calcium element.

Microencapsulated calcium1316 mg orally (5% protein and 95% calcium carbonate, corresponding to 500 mg of calcium element per tablet). There will be 2 shots of 1,316 mg each orally, to make a total contribution of 1,000 mg. calcium element

1,250 mg orally (500 mg of calcium element). There will be 2 doses of 1,250 mg. each orally, to make a total contribution of 1,000 mg. of calcium element.

1,500 mg orally (315 mg of calcium element). There will be 2 taken orally, to make a total contribution of 945 mg. calcium element

Calcium supplement for low contribution of elemental calcium in the daily diet

Using the Gastrointestinal Symptom Rating Scale (GRS). The scale measures constipation, diarrhea, windiness, swelling, nausea, reflux, pain and burning. The patient will have to choose the most appropriate response among those proposed. "Not at all" is the better outcome and "very strong discomfort" is the worst outcome

Bone Marker Analysis (CTx and P1NP) will be performed