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Calcipotriol is a topical vitamin D analogue used for plaque psoriasis, alone or paired with a steroid.
- Topical vitamin D analogue for plaque psoriasis
- Effective plaque control without reaching for a steroid
- Pushes keratinocytes back toward normal turnover
- Most calcium raising activity engineered out of the molecule
- Pairs with a steroid for faster early improvement
- Steady, visible response building over several weeks
- Calcipotriol (calcipotriene in the US) is a synthetic vitamin D3 analogue whose 22,24-diene-26,27-cyclopropyl side chain gives it VDR affinity close to calcitriol while being roughly 100-200 fold less calcaemic, because it is degraded within hours of absorption.
- The original Lancet right/left comparison established that calcipotriol matches a potent topical corticosteroid in plaque psoriasis without steroid atrophy (PMID 1670840; this record carries an erratum).
- Direct histological work in treated plaques confirms the mechanism is real rather than inferred: calcipotriol reduces keratinocyte proliferation markers and restores normal differentiation markers in psoriatic skin [2].
- The calcipotriol plus betamethasone dipropionate fixed combination is more effective and faster than either component alone and is now the standard topical regimen (PMID 12174105, PMID 15214905, PMID 34417633).
- Calcipotriol combined with 5-fluorouracil has a genuine second indication in actinic keratosis, where the vitamin D analogue induces TSLP-driven T-cell immunity against the lesions [7].
- Calcipotriol is inactivated by ultraviolet light and by acidic pH, so it must be applied after, not before, phototherapy and should not be mixed with salicylic acid preparations.
Mechanism
It binds the vitamin D receptor in keratinocytes, which slows their proliferation and pushes them toward normal differentiation; the abnormally fast turnover of a psoriatic plaque is what it corrects. It was engineered so that the calcium-raising activity of calcitriol is largely stripped out while the keratinocyte effect is kept, which is what makes topical use practical at all.
receptor fingerprint
Vitamin D receptor (VDR / NR1I1)Agonist; binds VDR with affinity comparable to calcitriol but is roughly 100-200 fold less calcaemic in vivo because of rapid inactivation
Keratinocyte proliferation and terminal differentiationInhibits hyperproliferation and normalises differentiation; reduces Ki-67 index and restores involucrin and transglutaminase expression in psoriatic plaques
Inflammatory dendritic cell / Th17 (IL-17, IL-23) axisSuppression of the cytokine axis, additively with betamethasone dipropionate
CYP24A1 (25-hydroxyvitamin D 24-hydroxylase)Substrate; calcipotriol is inactivated within hours of cutaneous absorption
Safetyrisks and cautions, not medical advice
A vitamin D analogue; exceeding the weekly ointment limit raises serum calcium, and psoriasis needs a diagnosis before it is treated.
Subjective profileweighing the evidence above
Effective and slow, which is the combination people abandon. Plaques respond over weeks rather than days, so the commonest reason it gets written off is that it was stopped just as it began working; the fixed combinations with a steroid exist largely to buy the early improvement that keeps someone using it. The engineering is genuinely clever, with the keratinocyte effect kept while most of the calcium raising activity was designed out, though not all of it, and exceeding the weekly ointment allowance raises serum calcium for real. It irritates the face and skin folds, which is why it is a plaque treatment and not an all over one.
Where to buy
Suppliers
Vendors carrying Calcipotriol, with live product details and codes. Links are affiliate links that support the wiki at no cost to you.
RUPharma🌐
Calcipotriol
Research
- 1991first citedDouble-blind, right/left comparison of calcipotriol and betamethasone valerate in treatment of…
- 2022meta-analysisClinical efficacy and safety of using calcipotriol-betamethasone compounding agent for psoriasi…
- 2024most recentCalcipotriol and 5-Fluorouracil Combination Therapy for the Treatment of Actinic Keratosis in t…
- 1.Double-blind, right/left comparison of calcipotriol and betamethasone valerate in treatment of psoriasis vulgaris.
- 2.Biologic effects of topical calcipotriol (MC 903) treatment in psoriatic skin.
- 3.Efficacy and safety of a new combination of calcipotriol and betamethasone dipropionate (once or twice daily) compared to calcipotriol (twice daily) in the treatment of psoriasis vulgaris: a randomized, double-blind, vehicle-controlled clinical trial.
- 4.Efficacy of once-daily treatment regimens with calcipotriol/betamethasone dipropionate ointment and calcipotriol ointment in psoriasis vulgaris.
- 5.Clinical efficacy and safety of using calcipotriol-betamethasone compounding agent for psoriasis treatment: a systematic review and meta-analysis.
- 6.Topical calcipotriol/betamethasone dipropionate for psoriasis vulgaris: A systematic review.
- 7.Calcipotriol and 5-Fluorouracil Combination Therapy for the Treatment of Actinic Keratosis in the Clinic: A Review Article.
- 8.Calcipotriol/Betamethasone Dipropionate Foam: A Review in Plaque Psoriasis.
8 listed here; entry last updated August 2026
Reviews
My notesprivate to this device
Notes and cautions
- The main risks are local and dose-related.
- Skin irritation, burning and perilesional erythema affect a substantial minority, and calcipotriol should be kept off the face, flexures and genitals where irritation is worst.
- Hypercalcaemia is uncommon but real and occurs when the weekly dose cap is exceeded, so keep within the labelled maximum, generally 100 g per week for the 50 microgram/g preparation in adults, and lower in children and in renal impairment; check calcium if extensive body-surface treatment is needed.
- Do not use it on erythrodermic or generalised pustular psoriasis, where absorption is unpredictable.
- Calcipotriol is degraded by UV light and by acidic preparations, so apply it after phototherapy rather than before and do not combine it in the same application as salicylic acid.
- Where the fixed combination with betamethasone is used, the corticosteroid brings its own limits on duration, occlusion and site.