Otezla
An oral pill for plaque psoriasis, psoriatic arthritis and the mouth ulcers of Behcet's disease. It needs no routine blood tests, and it is gentler and less powerful than the injected treatments.
Key facts
Otezla at a glance.
Used for
Plaque psoriasis and psoriatic arthritis
Results
12–16 weeks
Treatment commitment
Twice daily after starter schedule
Key precautions
Gut effects; monitor mood and weight
What is it?
Top things to know about Otezla
- It is an oral PDE4 inhibitor. Apremilast alters inflammatory signaling through cyclic AMP.
- It treats several conditions. Uses include plaque psoriasis, psoriatic arthritis and Behçet ulcers.
- Children may be eligible. Selected patients from age 6 qualify, by weight.
- Dosing varies. Schedules differ by formulation and kidney function.
Often used for
What Otezla is used for
Psoriasis
Improves moderate plaque psoriasis.
Psoriatic Arthritis
Eases joint pain and swelling.
Scalp Psoriasis
Approved for scalp involvement.
Eczema
Trials in eczema were disappointing.
Alopecia Areata
Not effective in trials.
HOW IT WORKS
How Otezla works
Diagram explanation and sources
Blocks PDE4: Inhibits an enzyme that breaks down cAMP. Raises cAMP inside cells: Preserves a signal involved in regulating inflammation. Helps inflamed skin settle: Psoriasis plaques become less inflamed.
PDE4 inhibition and increased intracellular cAMP are established. The exact link to clinical improvement is not fully defined; this is a simplified overview, not every downstream pathway.
Strengths
Apremilast strengths
Apremilast now includes immediate-release 10, 20 and 30 mg tablets plus a 75 mg extended-release tablet. The 75 mg XR product is a different release formulation, not a direct milligram-for-milligram increase from 30 mg. Kidney function, age and weight can change the regimen.
10 mg
20 mg
30 mg
75 mg XR
Used during the labeled introduction schedule rather than as a universal long-term adult dose.
Used in titration and in some weight-based pediatric maintenance regimens.
The usual adult maintenance regimen is 30 mg twice daily after titration, with important renal-dose exceptions.
The labeled adult maintenance alternative is once daily after the appropriate introduction or switch. Do not substitute tablets without prescribing instructions.
Strength sources
Forms
Apremilast forms
Tablet
A solid oral form. Size, coating and ease of swallowing vary by product.
How to use it
Your treatment, step by step.
How to take it
- 01
When to take it
Twice a day, roughly 12 hours apart, with or without food — food helps some people with nausea. Swallow the tablets whole; do not crush, split or chew them.
- 02
If you miss a dose
Take it as soon as you remember, unless the next dose is close, in which case skip it. Never take two at once. If you have stopped for more than a few days, ask before restarting; the full dose brings the stomach side effects straight back, so the starter pack is usually repeated.
Monitoring & follow-up
The absence of blood tests is why many people choose this drug. No baseline blood count, no liver panel, no tuberculosis test, no hepatitis screen, nothing repeated. Kidney function is checked once before starting, because severe impairment halves the dose.
What replaces it is clinical monitoring, which is not lighter, only different. Weight comes first. Weight loss is common and can be substantial, with some people losing five to ten percent of their body weight. If you wanted that, it is welcome. If you are older, frail or already underweight, it is a reason to reconsider, and unexplained loss should prompt a review.
Mood is second. Depression, low mood and, rarely, suicidal thoughts have been reported and appear on the label. The risk is low, but new or worsening depression should be reported promptly, and a history of depression belongs on the record before you start.
Diarrhea and nausea are third. They usually settle within the first few weeks, but severe or persistent diarrhea is not something to push through. In older adults, and in anyone on a water tablet or a blood pressure medicine, it has caused dehydration and kidney injury.
The one scheduled checkpoint is the 16-week review of skin or joints. If nothing meaningful has changed, continuing is not useful.
What to expect
How things change over time.
Starting
The starter pack steps the dose up over the first week, which softens the early side effects.
Adjusting
Loose stools, nausea and headache usually start in the first week or two and settle within a month.
Itch
Usually the first thing to change, ahead of the plaques. Behcet's mouth ulcers settle here too, one of the faster and more reliable responses.
Working
The first visible change in the skin. Scale lifts before the redness fades.
Judge it here
In the trials roughly one in three people reached a 75 percent improvement. Scalp psoriasis responds better than thick body plaques, a common reason to choose it.
Psoriatic arthritis
Joint pain, swelling and tenderness improve.
Weight and mood
Weight loss comes on gradually, so weigh yourself regularly rather than going by how clothes feel. Mood changes are uncommon but worth watching.
Nails
The slowest of all, because a nail has to grow out before improvement shows.
- First dose
- Days 1 to 14
- Weeks 2 to 4
- Weeks 4 to 8
- Weeks 12 to 16
- Weeks 16 to 24
- Months 3 and onward
- Months 6 and beyond
When you stop
No taper, no withdrawal, no rebound flare. Apremilast can be stopped outright.
Psoriasis returns gradually over weeks to a few months, and psoriatic arthritis follows the same pattern.
Side effects clear fast. Diarrhea, nausea and headache settle within days, and weight generally comes back over the following months.
Restarting works. Most people get the same response as before, though the five-day build-up is repeated so the stomach side effects do not arrive all at once.
What it Pairs with
Otezla + your routine
| Product or situation | With Otezla | What to know |
|---|---|---|
| St John's wort | Avoid | It clears apremilast from the body fast enough that the drug may stop working. The most common over-the-counter culprit. |
| Crushing, splitting or chewing the tablets | Avoid | They are made to be swallowed whole, and breaking them changes how the drug is released. |
| Restarting at the full dose after a break | Avoid | The stomach side effects come back at full force. Repeat the gradual build-up instead. |
| Doubling up after a missed dose | Avoid | It causes nausea and diarrhea and gains nothing. |
| Ignoring steady weight loss | Avoid | Losing weight without trying is a known effect, not a coincidence. Report it rather than waiting for the next appointment. |
| Nothing to avoid with food or sun | Avoid | No food restriction, no alcohol restriction, no sun sensitivity. |
| If you are pregnant, breastfeeding or planning a pregnancy | Use care | Ask the doctor managing your pregnancy before starting or continuing. There is a pregnancy registry, and enrolling is worth discussing. |
| If you have had depression, low mood or suicidal thoughts | Use care | This belongs on the record before you start, and it changes how closely mood is followed. |
| If you are underweight, or are losing weight without trying | Use care | Weight loss is expected, and it matters more in some people than others. |
| If you have significant kidney disease | Use care | The dose is halved, and the build-up over the first days is done differently. |
| If you take carbamazepine or rifampin | Use care | Phenytoin, phenobarbital and St John's wort count too. All clear apremilast faster and can make it stop working. |
| If you have severe or lasting diarrhea | Use care | This matters most if you are older or take a water tablet or blood pressure medicine. It has caused dehydration and kidney injury. |
| If you have an active infection | Use care | Apremilast is not strongly immunosuppressive, but mention it before starting something new. |
Side effects & when to get help
Almost all of it is stomach upset and headache in the first two weeks, and it fades. The step-up starter pack exists to make that stretch manageable.
Common
Diarrhea and nausea: Worst in the first two weeks, then settles.
Headache: Same pattern. Early, then better.
Weight loss: A few pounds for some people.
Colds and sore throats: A little more often than usual.
Tell your doctor
Diarrhea that does not settle: Especially if you are losing weight with it.
Weight loss you did not want: Your doctor may weigh you at visits.
Low mood or new anxiety: Uncommon, but reported.
Stop and get care
Thoughts of harming yourself: Get help the same day.
Severe diarrhea with dehydration: Dizzy, dark urine, or unable to keep fluids down.
Getting it and cost
Getting Otezla.
Cost & access
Apremilast is expensive, priced far closer to the biologics than to older oral drugs such as methotrexate or acitretin.
What affects the cost
So insurers commonly ask that cheaper options be tried first, and prior authorization is usual. The manufacturer runs a copay assistance program, which typically helps people with commercial insurance and is not available on government plans.
What it saves is indirect
no injection supplies, no screening tests, no repeated laboratory work. That does not close the gap with a generic tablet, but it is part of the comparison.
Alternatives
Other options to consider.
Methotrexate
Moderate to strong evidence. Cheaper, and generally more effective for thick plaques and for the joints. It needs regular blood tests, suppresses the immune system, and cannot be used in pregnancy.
Biologic injections
Those targeting interleukin-17 or interleukin-23 have strong evidence, with far higher rates of clear skin and proven protection of the joints in psoriatic arthritis. They are injected, require screening before starting, and cost more.
Deucravacitinib
Another once-daily tablet, and in direct comparison it cleared plaque psoriasis better than apremilast did. It is newer, needs some screening before starting, and does not treat Behcet's ulcers.
Acitretin
Oral, with no immune suppression and no blood pressure concerns, but slow, drying, and carrying a three-year pregnancy restriction.
Topical roflumilast cream
Blocks the same enzyme, applied to the skin. Sensible where psoriasis covers a limited area, and it avoids the whole-body side effects.
Phototherapy
No drug side effects at all. It requires two or three clinic visits a week for several months, which is the reason most people stop.
Questions
Questions you might be asking.
Do I really need no blood tests?
Correct. No monitoring schedule, no tuberculosis screen, no repeated bloodwork. Kidney function is checked once before starting, because severe impairment halves the dose.
Will the diarrhea stop?
For most people it is worst in the first two weeks and settles within a month, which is what the five-day starter pack softens. Diarrhea that is severe or lasts past a month is a reason to be reviewed.
Will I lose weight?
Some people do, and some of them lose five to ten percent of their body weight. It happens gradually, so weigh yourself every few weeks rather than judging by how clothes fit.
How does it compare with the injections?
Less effective for thick plaques — about one in three reached a seventy-five percent improvement at 16 weeks, where biologics reach much higher figures. What it offers is a tablet, no needles, no screening, no monitoring.
Can it affect my mood?
Low mood and depression are uncommon but on the label, and rare reports of suicidal thoughts exist. Report any new or worsening low mood promptly.
How long until I know whether it is working?
About 16 weeks for the skin, up to 24 weeks for joints. If nothing meaningful has changed, continuing is not worthwhile.
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