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One Alpha: Full Drug Profile
Medically reviewed by Min Clinic Staff | Updated: January 2026
One Alpha - General Information
One Alpha is an active metabolite of Vitamin D, which performs important functions in regulation of the calcium balance and the bone metabolism. One Alpha is Vitamin D-hormone analog which is activated by the enzyme 25-hydroxylase in the liver for systemic and in osteoblasts for local D-hormone actions. It possesses a unique pattern of pleiotropic effects on, e.g. gut, bone, pararthyroids, muscle and brain. One Alpha is superior to plain vitamin D (cholecalciferol) because the final kidney activation of the latter is regulated by a negative feedback mechanism. (PMID:17438884,17668216)
Pharmacology of One Alpha
Not Available
Additional information about One Alpha
- Generic Name
- Alfacalcidol
- Synonyms
- 1alpha-hydroxycholecalciferol; 1alpha-hydroxyvitamin D3; 1-hydroxycholecalciferol
- Drug Category
- Bone Density Conservation Agents
- Drug Type
- Small Molecule; Nutraceutical; Approved
- Other Brand Names containing Alfacalcidol
- One Alpha; Alsiodol;
- Dosage Forms of One Alpha
- Capsule Oral
- Chemical IUPAC Name
- (1R,3S,5Z)-5-[(2E)-2-[(1R,3aS,7aR)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexane-1,3-diol
- Chemical Formula
- C27H44O2
- Organisms Affected
- Humans and other mammals
