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Drug interactions

Calcium acetate + Ergocalciferol

Severity: Moderate

Calcium acetate and Ergocalciferol: moderate interaction.

Last updated

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

Vitamin D increases intestinal calcium absorption, and calcium acetate adds to the calcium load. Together they can cause hypercalcemia, particularly in patients with renal impairment or at high doses.

What this interaction means in plain words

Calcium acetate and Ergocalciferol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Calcium acetate belongs to Genitourinary; Ergocalciferol belongs to Musculoskeletal.

Evidence level: High

Why it happens

Additive pharmacodynamic effect: vitamin D enhances intestinal calcium absorption from the administered calcium salt.

What to do

Monitor serum calcium and phosphate periodically and adjust the dose of either agent if hypercalcemia develops.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Calcium acetate with Ergocalciferol?

MediHelp rates the interaction as moderate. Calcium acetate and Ergocalciferol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Vitamin D increases intestinal calcium absorption, and calcium acetate adds to the calcium load. Together they can cause hypercalcemia, particularly in patients with renal impairment or at high doses.

How serious is the interaction between Calcium acetate and Ergocalciferol?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum calcium and phosphate periodically and adjust the dose of either agent if hypercalcemia develops.

What other medicines interact with Ergocalciferol?

MediHelp also lists interactions of Ergocalciferol with, for example, Aluminum hydroxide, Calcium carbonate, Calcium chloride. The full list is on the Ergocalciferol page.

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