Europe — EMA
Neodidro (Calcifediol)
GNH USA supplies Neodidro (Calcifediol), a vitamin D analog for vitamin D deficiency and bone health support. Request a quote for global supply.
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What is Calcifediol?
Calcifediol, the active ingredient in Neodidro, is a vitamin D analog presented as an oral formulation for oral use. It is used to treat vitamin D deficiency and support bone health in patients with related disorders.
GNH USA supplies Neodidro as a licensed, GDP-compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.
What is Calcifediol used for?
Neodidro is a vitamin D analog indicated for conditions related to calcium metabolism and bone health. - Vitamin D deficiency: restores adequate serum 25‑hydroxyvitamin D levels and improves calcium absorption. - Secondary hyperparathyroidism: helps reduce elevated parathyroid hormone concentrations associated with chronic kidney disease. - Support of bone health: contributes to normal bone remodeling and mineralization in at‑risk populations.
What are the side effects of Calcifediol?
Calcifediol may be associated with a range of adverse reactions, most of which are dose‑related.
Common Side Effects: - Hypercalcemia: elevated blood calcium levels. - Hyperphosphatemia: increased serum phosphate. - Nausea or gastrointestinal discomfort. - Headache. - Fatigue.
Serious or Rare Side Effects: - Nephrolithiasis: kidney stone formation. - Cardiac arrhythmias due to electrolyte imbalance. - Severe hypercalcemia with renal impairment. - Allergic reactions such as rash or angioedema.
What precautions apply to Calcifediol?
When prescribing Neodidro, clinicians should consider patient‑specific factors and monitor relevant parameters. - Renal function: assess kidney status before initiation and periodically thereafter. - Calcium levels: monitor serum calcium to avoid hypercalcemia. - Phosphate levels: check phosphate especially in patients with renal disease. - Concomitant vitamin D products: avoid duplicate therapy that may increase toxicity risk. - Pregnancy and lactation: use only if the potential benefit justifies the potential risk. - Store at ambient temperature: keep below 25 °C, retain in original packaging, protect from moisture and direct sunlight.
What does Calcifediol interact with?
Calcifediol can interact with several medicines that affect calcium metabolism or vitamin D pathways.
Major Interactions (Avoid): - Thiazide diuretics: may exacerbate hypercalcemia. - Calcium supplements: increase risk of excessive calcium levels. - Vitamin D analogues (e.g., calcitriol): additive effect on calcium absorption.
Moderate Interactions (Monitor Closely): - Anticonvulsants (e.g., phenytoin, phenobarbital): may increase catabolism of vitamin D metabolites. - Glucocorticoids: can reduce vitamin D effectiveness. - Bisphosphonates: monitor bone turnover markers when used together.



