Medication info
Alphalon Soft Capsule 0.5 Micrograms (Alfacalcidol)

Alphalon Soft Capsule 0.5 Micrograms (Alfacalcidol)

OTC medicationSoft capsule경구
Ingredient · strength
Alfacalcidol›0.5μg / 1 capsule
Manufacturer / importer
(주)일화
Appearance
Yellow oval soft capsules containing colorless or transparent oily contents
Packaging
30 capsules/bottle, 100 capsules/bottle, 100 capsules/box [(10 capsules/PTP x 10)]
Approval status
Active

MFDS item code 202502982 · Notified 2025.11.18

Summary

Main use
Improvement of vitamin D metabolism disorders (hypocalcemia, bone lesions, etc.) and treatment of osteoporosis
Who takes it
Adults · Children
Adult dose
Chronic renal failure and osteoporosis: Administer alfacalcidol orally at a dose of 0.5 to 1 ㎍ once daily. Hypoparathyroidism, and other diseases associated with vitamin D metabolism disorders: Administer orally at a dose of 1 to 4 ㎍ once daily.
Child dose
Osteoporosis: Administer alfacalcidol orally at a dose of 0.01 to 0.03 ㎍ per kg body weight once daily. Other conditions: Administer orally at a dose of 0.05 to 0.1 ㎍ per kg body weight once daily.

Ingredients

Manufacturer
(주)일화

Efficacy & effects

Improvement of vitamin D metabolism disorders (hypocalcemia, bone lesions, etc.) and treatment of osteoporosis

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

This medicine is used to improve hypocalcemia, tetany, bone pain, and symptoms of bone lesions associated with vitamin D metabolism disorders such as chronic renal failure, hypoparathyroidism, vitamin D resistant rickets, and osteomalacia. It is also effective in the treatment of osteoporosis. Therefore, it helps to enhance bone health and alleviate related symptoms.

How to take

Adult dose

Chronic renal failure and osteoporosis: Administer alfacalcidol orally at a dose of 0.5 to 1 ㎍ once daily. Hypoparathyroidism, and other diseases associated with vitamin D metabolism disorders: Administer orally at a dose of 1 to 4 ㎍ once daily.

Child dose

Osteoporosis: Administer alfacalcidol orally at a dose of 0.01 to 0.03 ㎍ per kg body weight once daily. Other conditions: Administer orally at a dose of 0.05 to 0.1 ㎍ per kg body weight once daily.

Precautions

This medication should not be taken by patients with abnormally high levels of calcium, phosphorus, or magnesium in the blood, or by patients exhibiting vitamin D toxicity. During the use of this medication, it is advised not to take drugs containing magnesium, vitamin D or its derivatives, or drugs containing calcium together. Moreover, it is not recommended to breastfeed while taking this medication, and it is preferable to avoid breastfeeding unless absolutely necessary. Women who are pregnant or may become pregnant should consult their physician thoroughly before taking this medication, as it may affect the fetus. It is necessary to adjust the dosage and monitor serum calcium levels in children and the elderly due to different bodily functions. Patients taking specific medications such as digoxin should be cautious due to the risk of side effects from hypercalcemia. Patients with certain conditions such as kidney stones or sarcoidosis should consult a specialist before use. This medication contains Yellow No. 4 (tartrazine), which may cause allergic reactions, so caution is advised. While taking this medication, various symptoms related to hypercalcemia, such as indigestion, headache, muscle cramps, kidney dysfunction, etc., may occur, so if any abnormal symptoms appear, discontinue use immediately and consult a specialist. It is very important to regularly check serum calcium levels to maintain them within the normal range. In case of overdose, emergency treatments like inducing vomiting or gastric lavage may be necessary, and prompt medical assistance is required. Keep this medication out of reach of children, and store it in a cool, dry place away from direct sunlight. Additionally, to maintain quality, it is advisable not to transfer to another container.

Side effects and when to seek care immediately

Serious side effects

  • Hives, severe swelling, chest tightness, difficulty breathing, cold sweat, pallor, severe allergic reaction
  • Severe rash with fever, blisters, skin peeling, pain in oral or ocular mucosa, severe skin adverse reactions
  • Shortness of breath or difficulty breathing, asthma attacks, respiratory issues accompanied by cough and fever
  • Jaundice (yellowing of skin or eyes), extreme lethargy, liver abnormalities
  • Sudden and severe headache, thunderclap headache, seizures

Mild side effects

  • Loss of appetite
  • nausea
  • vomiting
  • diarrhea
  • constipation
  • stomach pain
  • discomfort in the stomach area
  • abdominal bloating
  • indigestion
  • thirst
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  • oral discomfort
  • polydipsia
  • pancreatitis
  • metallic taste
  • leg muscle tightness
  • headache
  • heaviness in the head
  • insomnia
  • agitation
  • weakness
  • fatigue
  • dizziness
  • tingling
  • drowsiness
  • heartburn
  • shoulder stiffness
  • presbycusis
  • tinnitus
  • memory and cognition decline
  • acute psychotic episodes
  • altered consciousness
  • back pain
  • mild increase in blood pressure
  • palpitations

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

Storage

This medication is sensitive to light, so it should be stored in a container that blocks light. Furthermore, to store the medication safely, it is best to keep it at room temperature, between 1 to 30 degrees Celsius.

Appearance and packaging

Appearance

Yellow oval soft capsules containing colorless or transparent oily contents

Package unit

30 capsules/bottle, 100 capsules/bottle, 100 capsules/box [(10 capsules/PTP x 10)]

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.