Cyclosporine vs Methotrexate

Cyclosporine: A strong oral immune-suppressing drug used in short bursts for severe eczema and psoriasis. It works faster than anything else, and blood pressure and kidney function set a hard limit on how long anyone stays on it. Methotrexate: An old, inexpensive tablet or injection for severe psoriasis and psoriatic arthritis. It is taken once a week, not daily, and it needs regular blood tests.

Reviewed by Dr. Schwarz, Board-Certified Dermatologist

An amber pill bottle labeled Cyclosporine tipped over with white tablets spilling out

Which one?At a glance What it treats Diagrams How you take it Results Side effects Safety Cost When you stop Questions

Which one is right for you?

Choose Cyclosporine if…

Choose for a fast, short burst of control in severe eczema or psoriasis while a longer-term treatment is set up.

Severe flares needing fast control
A bridge to a biologic or other long-term drug
Normal kidneys and blood pressure

Choose Methotrexate if…

Choose for severe psoriasis, especially with joint pain, as an inexpensive weekly treatment with regular blood tests.

Psoriasis with psoriatic arthritis
Cost matters and biologics aren't covered
You can avoid alcohol and keep up blood tests

Use care together

Can you take them together?

These are usually used one at a time. Occasionally they are overlapped briefly when switching, under close blood-test and kidney monitoring.

At a glance

● Cyclosporine

● Methotrexate

Type

Oral immune suppressant

Oral or injected immune suppressant

What it does

Rapidly switches off overactive immune cells in the skin

Calms overactive immune cells and skin-cell growth

Best for

Severe eczema and psoriasis flares

Severe psoriasis and psoriatic arthritis

Prescription

Yes

Form

Capsule or liquid

Tablet or injection

How often

Twice daily

Once a week — never daily

Course length

Months; about 1 year at most

Ongoing

Time to results

2–6 weeks

4–12 weeks

Main side effect

Raised blood pressure; extra hair; swollen gums

Nausea and tiredness the day after

Blood tests

Kidney, blood pressure, others

Required

Pregnancy

Check with your clinician

Never

Cost

Low to moderate; generic available

Low; generic available

What it treats

Compare uses by strength of evidence. Evidence level describes confidence in a benefit, not its size.

Evidence level

Cyclosporine

Methotrexate

Strong evidenceMost established uses

Eczema

Rapidly controls severe flares.

Two thick, sharply bordered plaques on a knee on fair light skin. They are salmon-pink to red with loose silvery-white scale on top.

Psoriasis

Clears severe plaques quickly.

Psoriasis

Clears moderate to severe plaques.

Moderate evidenceSome supportive research

Large raised welts across an upper back on light skin. The welts are pink to red with paler swollen centers, and the edges stand clearly above the surrounding skin.

Hives

Used for severe chronic hives.

Eczema

An option for severe eczema.

Psoriatic Arthritis

Reduces joint symptoms.

Little evidence

—

Alopecia Areata

Mixed results in small studies.

Not effective

Acne

No role in acne.

Acne

No role in acne.

Can make it worse

Melanoma

Raises skin cancer risk with long use.

—

How it works

Cyclosporine. Turns down T-cell signals that drive skin inflammation. 1. Inhibits calcineurin: Binds cyclophilin to block a T-cell activation switch. 2. Reduces IL-2 signals: Limits a messenger that helps T cells become active. 3. Calms skin inflammation: Overactive immune responses in skin decrease. — Open full-size diagram
Diagram explanation and sources
Inhibits calcineurin: Binds cyclophilin to block a T-cell activation switch. Reduces IL-2 signals: Limits a messenger that helps T cells become active. Calms skin inflammation: Overactive immune responses in skin decrease.
Cyclosporine binds cyclophilin; that complex inhibits calcineurin and T-cell cytokine production. This is a simplified skin-focused explanation of systemic immunosuppression.
Source 1 · Source 2

Methotrexate. Helps control psoriasis through several cellular effects. 1. Interferes with cell replication: Blocks folate-dependent processes used to make DNA. 2. May increase adenosine signaling: This calming messenger can limit immune-cell activity. 3. Reduces skin inflammation: Inflammatory activity and plaque buildup can decrease. — Open full-size diagram
Diagram explanation and sources
Interferes with cell replication: Blocks folate-dependent processes used to make DNA. May increase adenosine signaling: This calming messenger can limit immune-cell activity. Reduces skin inflammation: Inflammatory activity and plaque buildup can decrease.
The psoriasis mechanism is not fully established. Folate antagonism affects replication, while low-dose anti-inflammatory actions include proposed adenosine pathways supported by experimental work; their precise clinical contributions are unresolved.
Source 1 · Source 2 · Source 3 · Source 4

How you take it

Treatment plan

The dose is set by body weight, then adjusted by blood pressure and kidney tests, not by how the skin looks.

Starting dose: About 2.5 mg per kilogram of body weight a day, split into two doses. A severe flare may start around 4 to 5 mg per kilogram a day to get control quickly.

Going up: Raised in small steps every two to four weeks if response is poor, and only if the tests are stable.

Coming down: Once the skin is calm, the dose comes down in stages, to give the next treatment time to work.

Total course: Short by design. Many courses run 8 to 16 weeks. Guidelines advise no more than about a year of continuous treatment, less where possible.

This drug is taken once a week. Taking it every day can cause fatal bone marrow failure. Pick one day of the week, write it down, and keep to it.

Test dose: A single small dose, often 2.5 mg to 5 mg, with blood counts checked about a week later before going further. A safety check, not the treatment dose.

Starting dose: Commonly 7.5 mg to 15 mg once weekly, adjusted for age, weight, kidney function and other illnesses. Lower in older people and in reduced kidney function.

Going up: Small steps, usually 2.5 mg to 5 mg every few weeks with blood tests in between, until the psoriasis responds or side effects set the ceiling.

Usual dose: Most people settle between 15 mg and 25 mg once weekly. Above about 15 mg tablet absorption gets unreliable, a common point to switch to the injection.

Folic acid alongside it: It reduces nausea, mouth ulcers and blood count problems. Usually a daily dose on the days you are not taking methotrexate, or one larger weekly dose on a different day. It does not stop the drug working.

Total course: No fixed course. It continues as long as it works and blood tests stay normal, which for some people is years.

When to take it

Twice a day, about 12 hours apart, at the same times daily. Be consistent about food: always with meals or always without, because switching changes absorption. Swallow capsules whole and leave them in the foil until you take them.

On the liquid, mix it with orange or apple juice in a glass cup, stir and drink it straight away, then rinse the cup with more juice and drink that too. Never use grapefruit juice.

Once a week, on the same day every week. Choose a day you will remember and write it somewhere visible. Some people take the whole dose at once; some split it into two portions about twelve hours apart on the same day to reduce nausea. Do not spread it across different days unless you were told to.

Take tablets with water, and with food if they upset your stomach. An evening dose means the tiredness and mild nausea happen while you are asleep.

Folic acid goes on the other days, as prescribed. It is not a substitute for a missed methotrexate dose.

With the weekly injection, keep to the same day and rotate the site.

If you miss a dose

Take it when you remember unless the next dose is close, then skip it. Never take two at once. Tell the prescriber if you miss more than a dose or two, or vomit soon after taking it, because the dose is built around your blood level.

Take it as soon as you remember if it is within about two days of your usual day. If longer, skip it and take the next on your usual day. Never take two weekly doses close together to catch up, and never take a daily dose to make up for a missed week.

If you have taken more than one weekly dose, or taken it several days in a row, contact a doctor or a poison center straight away. Do not wait to see how you feel. This overdose is treatable caught early and dangerous when it is not.

Monitoring

Cyclosporine is monitored more closely than any other skin drug, and that monitoring is why it can be used at all. Blood pressure is measured at every visit, often at home. Kidney function is checked by blood test, twice before starting for a reliable baseline, then every couple of weeks for a month or two, then monthly once the dose is steady. The same draws cover potassium, magnesium, uric acid, liver enzymes, blood counts and cholesterol. Drug blood levels are routine in transplant care, not usually needed at dermatology doses.

Two numbers drive the decisions. A rise in creatinine of about a quarter above your baseline, confirmed on a repeat test, means dropping the dose; about half means stopping. New high blood pressure means lowering the dose or adding a blood pressure medicine, and the choice matters: diltiazem and verapamil push levels up, amlodipine does not.

The interaction list is long. Drugs that raise levels include the azole antifungals, clarithromycin and erythromycin, and some HIV and hepatitis C medicines. Drugs that lower it include rifampin, phenytoin, carbamazepine and St John's wort. It also raises statin levels, so that dose is often reduced, and it interacts with colchicine, digoxin, methotrexate and potassium-sparing water tablets. Bring every prescription, supplement and herbal product to the first visit.

The time limit is the point of all this. Kidney damage builds with continuous use and part of it can be permanent, so guidelines cap continuous treatment at about a year and most dermatology courses are far shorter. Long or repeated use also raises the risk of skin cancer, lymphoma and serious infection, so skin checks continue afterward.

Methotrexate is watched by blood test, and the schedule is not optional. The problems it causes are silent until they are advanced.

Before starting: Full blood count, liver tests, kidney function, and a pregnancy test where relevant. Hepatitis B, hepatitis C, HIV and tuberculosis screening is standard, because the drug damps the immune system. A chest x-ray if there is any history of lung disease.

Early on: Blood counts and liver tests within a week or two of starting, and again after each dose increase. This is when a sudden drop in blood counts would show.

Once stable: Full blood count, liver tests and kidney function every one to three months, depending on the dose and what else you take, for as long as you are on the drug.

The liver over the long term: Years of methotrexate can scar the liver, and the risk rises with total lifetime dose, heavy alcohol use, obesity, diabetes and fatty liver disease. Biopsy used to be the check; most clinics now use a blood marker of scarring and a scan of liver stiffness.

The lungs: A rare but serious lung inflammation can occur. A new dry cough, breathlessness or fever means being seen, not waiting for the next appointment.

What to report between tests: Mouth ulcers, unexplained bruising or bleeding, sore throat or fever, dark urine, yellowing of the eyes or skin, severe nausea, any new cough or breathlessness.

When you’ll see results

Approximate windows, not promises.

● Cyclosporine

● Methotrexate

First 2 weeks

First 2 weeksStarting: Itch settles first, often within days, and sleep improves. Tingling or burning in the hands and feet, headache and mild nausea are common early. Blood pressure and kidney tests get checked.

Weeks 2 to 6

Weeks 2 to 6Working: Redness, weeping and thickness improve clearly. Chronic hives that antihistamines do not control usually settle within a month. Extra hair growth on the face, arms and body and swollen or tender gums start now; both are dose-related and reverse after stopping.

Weeks 8 to 16

Weeks 8 to 16Plaque psoriasis: Large improvement, often near-clear at the higher end of the dose range. Usually where the course ends and another treatment takes over.

Variable

VariableSevere inflammatory ulcers: In pyoderma gangrenosum it stops the ulcer spreading while healing catches up. Response times differ a lot.

Throughout

ThroughoutThe tests: Blood pressure creeping up and kidney numbers drifting decide whether the dose drops or the drug stops. Neither causes symptoms, which is why the tests are not optional.

First dose

First doseTaking it: Once a week, not daily, with folic acid on the other days. Nausea, tiredness or mouth soreness in the day or two after each dose is common early on; folic acid usually blunts it.

Weeks 1 to 2

Weeks 1 to 2Settling in: Nothing visible in the skin yet.

Weeks 4 to 8

Weeks 4 to 8Working: Plaques thin and spread less, thickness and scale first. Joint pain from psoriatic arthritis often improves in the same window, one reason it is chosen over a skin-only treatment.

About 3 months

About 3 monthsJudge it here: Substantial improvement is the realistic target.

Beyond 3 months

Beyond 3 monthsLong term: Where it suits, the result holds while the dose continues, with regular blood tests. Some stay on it for years.

Many months

Many monthsNails: Nail psoriasis can improve, but slowly. Nails always lag behind the skin.

Side effects

Sorted by what to do about them.

Cyclosporine

Methotrexate

Common

Raised blood pressure
Extra hair growth; swollen gums
Tremor, headache, tingling

Common

Nausea or tiredness the day after the dose
Mouth sores
Mild hair thinning

Tell your doctor

Passing less urine or swelling

Tell your doctor

Cough or breathlessness
Fever, sore throat or unusual bruising

Stop and get care

Fever or signs of serious infection
Severe headache, confusion or seizures

Stop and get care

Taking it daily by mistake
Yellowing skin or dark urine

Safety and who should avoid it

Pregnancy

Use care

Ask the doctor managing your pregnancy; do not stop alone.

Never

Both partners avoid conception during and for 3 months after.

Breastfeeding

Avoid

Not recommended.

Never

Not compatible.

Children

Specialist only

Used in severe childhood eczema.

Specialist only

Used in children with monitoring.

Monitoring

Required

Blood pressure and kidney tests every 2 weeks at first, then monthly.

Required

Blood counts, liver and kidney tests; every 3 months once stable.

Key interactions

Check

Many — grapefruit, some antibiotics, antifungals, statins, St John's wort.

Check

Trimethoprim-sulfamethoxazole, NSAIDs, some antibiotics; limit alcohol.

Other cautions

Avoid

Uncontrolled blood pressure, kidney disease, cancer; limit sun and avoid light therapy.

Avoid

Liver disease, heavy drinking, kidney disease, active infection.

Cost and getting it

Getting it and cost

Generic capsules are cheap next to biologics, part of why the drug is still used. Branded versions cost more without working better.

The visible cost is not the whole cost. Repeated blood tests, blood pressure checks and appointments add up, and none are optional. It is cheaper per month than a biologic but taken for only a few months, so the comparison depends on what comes after.

Insurance generally covers it for severe psoriasis. Eczema coverage varies more in the United States, where that use is off-label.

Generic methotrexate tablets are among the least expensive systemic treatments in dermatology. Folic acid is cheap too.

The weekly auto-injector pens cost considerably more, and coverage usually requires showing that tablets caused nausea or did not work well enough. Plain injectable vials are cheaper than the pens.

The real cost is the monitoring, repeated blood tests and periodically a liver scan or blood marker. Usually covered, but they are appointments and not optional.

Insurers frequently require a trial of methotrexate before approving a biologic, one reason it is still so often the first systemic drug tried.

When you stop

Comes back?

Often, so a longer-term plan is put in place first.

Psoriasis usually returns over months.

Taper needed?

Usually reduced gradually.

Usually not, but plan the next step first.

After the last dose

Blood pressure, hair and gum changes reverse.

Wait at least 3 months before trying to conceive — applies to both partners.

Common questions

Cyclosporine:How quickly will it work?

Faster than anything else for these conditions. Itch improves within days, clearing by four to six weeks.

Cyclosporine:How long can I stay on it?

Most courses run months. Guidelines cap continuous use at about one year, because kidney effects build and some can be permanent.

Cyclosporine:Why do I need my blood pressure checked so often?

It raises blood pressure in a meaningful share of people, and that causes no symptoms. Catching it early usually means lowering the dose rather than stopping.

Cyclosporine:Can I drink grapefruit juice?

No. Grapefruit, pomelo and Seville oranges block the enzyme that clears it, so levels rise unpredictably. Other citrus is fine.

Cyclosporine:Why is hair growing where it did not before, and why are my gums sore?

Both are dose-related. Not dangerous, usually better if the dose comes down, and gone after stopping.

Cyclosporine:Will my skin flare again when I stop?

Usually, within weeks to a few months, unless another treatment is running. Planning that before the taper is the point of the short course.

Methotrexate:How often do I take it?

Once a week, on the same day. Never daily. Daily dosing by mistake is the most dangerous error with this drug and it has been fatal. Get medical help the same day if it happens.

Methotrexate:Why do I also have to take folic acid?

Methotrexate blocks folate, and the mouth ulcers, nausea and low blood counts come from that. Folic acid on the other days restores enough folate to reduce them without stopping the treatment working.

Methotrexate:Do I really need all the blood tests?

Yes. Liver damage and falling blood counts cause no symptoms until they are advanced. The tests are the only early warning.

Methotrexate:Can I drink alcohol?

The concern is regular drinking, not a single glass, because alcohol and methotrexate both stress the liver. Agree an actual limit with your doctor.

Methotrexate:Can I take it if I want to have a baby?

No. It must be stopped well before trying to conceive, and the advice covers both partners. It causes miscarriage and serious birth defects. Ask your own doctor how far in advance.

Methotrexate:How long before I know if it is working?

Give it about three months. First changes often show at four to eight weeks, but three months on a tolerated dose is the fair point to judge.

Methotrexate:Is it chemotherapy?

It is chemotherapy at much higher doses. At psoriasis doses it acts as an immune-calming drug, and the experience is not comparable.

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