Medication info
Alfacalcidol 1 Microgram (Alfacalcidol)

Alfacalcidol 1 Microgram (Alfacalcidol)

OTC medicationTablet경구
Ingredient · strength
Alfacalcidol›0.001mg / 1 tablet
Manufacturer / importer
주식회사 노바엠헬스케어
Appearance
White round tablet
Packaging
30 tablets/bottle, 100 tablets/bottle
Approval status
Active

MFDS item code 202600460 · Notified 2026.02.19

Summary

Main use
Improvement of symptoms related to vitamin D metabolic disorders (hypocalcemia, bone pain, etc.) and osteoporosis
Who takes it
Adults · Children
Adult dose
Chronic renal failure and osteoporosis: Administer 0.5–1 ㎍ once daily as Alfacalcidol. Hypoparathyroidism and other conditions related to vitamin D metabolic disorders: Administer 1–4 ㎍ once daily.
Child dose
Osteoporosis: Administer 0.01–0.03 ㎍ per kg of body weight once daily as Alfacalcidol. Other conditions: Administer 0.05–0.1 ㎍ per kg of body weight once daily.

Ingredients

Manufacturer
주식회사 노바엠헬스케어

Efficacy & effects

Improvement of symptoms related to vitamin D metabolic disorders (hypocalcemia, bone pain, etc.) and osteoporosis

  • Hypocalcemia
  • tetany
  • bone pain
  • bone lesions
View approved original text

This medicine is used to improve hypocalcemia, tetany, bone pain, and bone lesion symptoms resulting from vitamin D metabolic disorders associated with chronic renal failure, hypoparathyroidism, vitamin D-resistant rickets, and osteomalacia. It is also effective in the treatment of osteoporosis. Patients can benefit from taking this medicine to alleviate symptoms associated with these conditions and improve bone health.

How to take

Adult dose

Chronic renal failure and osteoporosis: Administer 0.5–1 ㎍ once daily as Alfacalcidol. Hypoparathyroidism and other conditions related to vitamin D metabolic disorders: Administer 1–4 ㎍ once daily.

Child dose

Osteoporosis: Administer 0.01–0.03 ㎍ per kg of body weight once daily as Alfacalcidol. Other conditions: Administer 0.05–0.1 ㎍ per kg of body weight once daily.

Precautions

This medicine should not be taken by individuals with high levels of calcium and phosphorus in their blood or with certain metabolic disorders. It can be hazardous for patients with hypercalcemia, hyperphosphatemia, or hypermagnesemia. Patients in an alkaline state with elevated blood pH should also avoid this medicine. Those with toxicity symptoms due to vitamin D overdose or allergies to any components in this medicine should refrain from taking it. This medicine contains lactose, so individuals with lactose intolerance or related genetic disorders should not use it. It is advisable not to take this medicine concurrently with magnesium-containing medications, vitamin D preparations, calcium supplements, and certain diuretics. If breastfeeding, it is preferable to avoid using this medicine, and if unavoidable, it is recommended to stop breastfeeding. Women who are pregnant or may become pregnant should consult a doctor before taking this medicine, and caution should be exercised by children and elderly patients as well. Patients currently taking specific medications should consult a healthcare professional for potential interactions with this medicine. If any adverse reactions occur during use, discontinue use immediately and consult a healthcare provider. Particular attention is needed for possible gastrointestinal disorders, neurological symptoms, heart problems, renal function abnormalities, liver dysfunction, skin rashes, vision changes, and skeletal pain. Regular blood tests should be conducted to monitor calcium levels and kidney function, while ensuring the prescribed dosage is accurately followed to prevent overdose. This medicine should be stored in a cool, dry place, away from direct sunlight, and kept out of reach of children.

Side effects and when to seek care immediately

Serious side effects

Hives, severe swelling, tightness in the chest, difficulty breathing, cold sweat, pallor, severe rash with high fever, blisters, peeling skin, pain in oral/ocular mucosa, shortness of breath or difficulty breathing, asthma attacks, breathing difficulties accompanied by cough and fever, jaundice with yellowing skin or eyes, extreme lethargy, sudden and severe headaches, thunderclap headaches, seizures, confusion of consciousness, visual disturbances, paralysis, decreased urine output

Mild side effects

  • Loss of appetite
  • nausea
  • vomiting
  • diarrhea
  • constipation
  • stomach pain
  • feeling of discomfort in the stomach
  • abdominal bloating
  • dyspepsia
  • thirst
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  • unpleasant oral sensation
  • polydipsia
  • pancreatitis
  • metallic taste
  • leg muscle cramps
  • headache
  • heaviness in the head
  • insomnia
  • anxiety
  • weakness
  • lethargy
  • dizziness
  • numbness
  • drowsiness
  • heartburn
  • shoulder stiffness
  • age-related hearing loss
  • tinnitus
  • decreased memory
  • psychosis
  • consciousness disorders
  • back pain
  • mild elevation in blood pressure
  • palpitations
  • deep vein thrombosis

Not everyone experiences these, and they can vary from person to person.

Storage

This medicine may be sensitive to air and moisture, so it should be stored in a sealed container. The appropriate storage temperature is at room temperature between 1 degree and 30 degrees Celsius, avoiding excessively hot or cold places.

Appearance and packaging

Appearance

White round tablet

Package unit

30 tablets/bottle, 100 tablets/bottle

Same-ingredient medicines

Even with the same ingredient, strength, dosage form and how it is taken can differ.

Even with the same ingredient, the dose and directions can differ by strength and dosage form. Talk to a doctor or pharmacist before switching from a medication you are already taking.

Questions about this medicine

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For anything that needs medical judgment, consult a doctor or pharmacist.

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This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.