A vitamin D cream for psoriasis
Tacalcitol
A vitamin D-like cream or ointment applied once a day for plaque psoriasis.
What is Tacalcitol?
Tacalcitol is a vitamin D analogue, a treatment similar to vitamin D that is applied to the skin for plaque psoriasis. It works on the skin to slow the over-fast production of skin cells that makes plaques thick and scaly. It is usually applied once a day and is less messy and better smelling than older psoriasis treatments. It is generally well tolerated, but using too much over large areas can affect calcium levels, so it is used within the recommended limits. Wash your hands after applying it.
Education and reference only. This is a plain-language guide to Tacalcitol — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Tacalcitol is a vitamin D analogue used to treat plaque psoriasis, the common form with raised, red, scaly patches. It is applied directly to the affected skin as a cream or ointment and is one of a group of vitamin D-like treatments that are first-choice topical options for psoriasis in the UK. People often prefer it to older treatments because it is cleaner to use, does not stain and has little smell. It is a prescription treatment used as part of a wider psoriasis plan.
How it works
Tacalcitol acts on skin cells in a way similar to vitamin D, calming the over-rapid production of skin cells that drives the thick, scaly plaques of psoriasis. Over several weeks this helps the plaques flatten and become less red and scaly. Because it works locally on the skin, side effects are mainly mild irritation, but if a lot is absorbed over large areas it can nudge up calcium levels, which is why there is a limit on how much should be used.
Company & origin
Originated / developed by: Generic (long-established).
A vitamin D-like cream and ointment used in the UK for plaque psoriasis.
Practical use
How to take Tacalcitol
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- Apply a thin layer to the psoriasis plaques, usually once a day, ideally in the evening, and rub it in gently.
- Do not use more than the recommended amount or cover very large areas of skin, to protect your calcium balance.
- Be gentle on delicate areas such as the face and skin folds, where it can cause more irritation.
- Keep it away from your eyes; if it gets in them, rinse thoroughly with water.
- Wash your hands after applying it, unless your hands are the area being treated.
- Continue your moisturisers and any other prescribed psoriasis care alongside it as advised.
Weighing it up
Advantages & disadvantages of Tacalcitol
Advantages
- Usually applied just once a day, which is simple and convenient.
- Cleaner and less smelly than older tar or dithranol treatments, and does not stain.
- A first-choice type of topical treatment that effectively flattens psoriasis plaques over weeks.
Disadvantages
- Can cause mild skin irritation, especially on the face and in skin folds.
- Using too much over large areas can affect calcium levels, so there is a limit.
- Works gradually, so it needs consistent use over weeks rather than giving instant results.
Practical use
Good to know
Tacalcitol is usually applied once a day, which many people find convenient, and it is far less messy than older tar or dithranol treatments. It can cause some mild redness, itching or burning where it is applied, especially on delicate areas like the face and skin folds, so use it gently there. The main caution is not to use more than the recommended amount or cover very large areas, because too much vitamin D-like treatment can raise blood calcium. Avoid getting it in the eyes, and wash your hands after applying unless you are treating them. It is often used alongside moisturisers and is sometimes combined or alternated with other psoriasis treatments under guidance.
Who should not take it / use with caution
- People with disorders of calcium balance should use it only with medical advice.
- It should be used cautiously and sparingly on the face and in skin folds.
- Those needing treatment over very large areas may need an alternative to avoid excess use.
Monitoring
- Reviewing how the plaques respond and whether the skin tolerates it well.
- Keeping use within the recommended amount to protect calcium balance.
- Considering a calcium check if a lot is used over large areas or for a long time.
Side effects
- Mild redness, itching, burning or stinging of the treated skin.
- More irritation on delicate areas such as the face and skin folds.
- Rarely, raised calcium levels if much more than recommended is used over large areas.
Key interactions
- Other vitamin D supplements or treatments could add to its effect on calcium if used to excess.
- Very irritating skin products on the same area may add to local irritation.
- Tell your prescriber about other creams used on the plaques so applications can be timed sensibly.
Available as: A cream and an ointment applied to the skin.
Answers
Tacalcitol: frequently asked questions
How often do I apply tacalcitol?
It is usually applied once a day, often in the evening, rubbed gently into the psoriasis plaques.
Is it messy like tar treatments?
No, it is much cleaner and has little smell, does not stain, and many people find it far more pleasant to use than older treatments.
Can I use as much as I like?
No, there is a limit on how much to use and you should not cover very large areas, because too much vitamin D-like treatment can raise blood calcium.
Can I use it on my face?
It can be used gently on the face if advised, but delicate skin and folds are more easily irritated, so use it sparingly there.
How long until it helps?
Plaques usually improve gradually over several weeks of regular use rather than straight away.
Authoritative sources
- BNF
- NICE CKS
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