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  • Generic Name: calcium acetatetablets
  • Brand Name: Eliphos
  • Drug Class: How Do Urea Cycle Disorder Treatment Agents Work?, Calcium Salts
Last updated on MDtodate: 10/04/2022


Hypercalcemia is discussed elsewhere

Clinical Trial Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

In clinical studies, calcium acetate has been generally well tolerated.

Calcium acetate was studied in a 3-month, open-label, non-randomized study of 98 enrolled ESRD hemodialysis patients and an alternate liquid formulation of calcium acetate was studied in a two week double-blind, placebo-controlled, cross-over study with 69 enrolled ESRD hemodialysis patients. Adverse reactions (>2% on treatment) from these trials are presented in Table 1.

Table 1: Adverse Reactions in Patients with End-Stage Renal Disease Undergoing Hemodialysis

Preferred Term Total adverse reactions reported for calcium acetate
n (%)
3-mo, open-label study of calcium acetate
n (%)
Double blind, placebo-controlled, cross-over study of liquid calcium acetate
Calcium acetate
n (%)
n (%)
Nausea 6 (3.6) 6 (6.1) 0 (0.0) 0 (0.0)
Vomiting 4 (2.4) 4 (4.1) 0 (0.0) 0 (0.0)
Hypercalcemia 21 (12.6) 16 (16.3) 5 (7.2) 0 (0.0)


Mild hypercalcemia may be asymptomatic or manifest itself as constipation, anorexia, nausea, and vomiting. More severe hypercalcemia is associated with confusion, delirium, stupor, and coma. Decreasing dialysate calcium concentration could reduce the incidence and severity of ELIPHOS® -induced hypercalcemia. Isolated cases of pruritus have been reported, which may represent allergic reactions.

Postmarketing Experience

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to estimate their frequency or to establish a causal relationship to drug exposure.

The following additional adverse reactions have been identified during post-approval of calcium acetate: dizziness, edema, and weakness.




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