What is isotretinoin?

Isotretinoin is a prescription oral retinoid used primarily to treat severe acne, particularly deep, painful nodules and cysts that may cause permanent scarring. It is related to vitamin A and is considered one of the most effective treatments available for severe acne.

Dermatologists may consider isotretinoin when acne is severe, causes or threatens significant scarring, or has not responded adequately to other appropriate treatments. The American Academy of Dermatology includes isotretinoin among its recommended systemic treatments for acne.

You may also hear isotretinoin called Accutane. Accutane was a brand name for isotretinoin, although that particular brand is no longer available in the United States. Several other isotretinoin brands and generic formulations exist.

Quick answer

Isotretinoin is a powerful oral retinoid used mainly for severe or treatment-resistant acne. It reduces oil production, helps prevent clogged pores, reduces acne-related inflammation and changes the environment that allows acne-causing bacteria to thrive. Because it can cause serious side effects and severe birth defects if taken during pregnancy, it should only be taken under appropriate medical supervision.

How does isotretinoin work?

Acne develops through several overlapping processes:

1. Excess production of skin oil, or sebum
2. Clogged hair follicles
3. Changes involving Cutibacterium acnes, the bacteria associated with acne
4. Inflammation

Isotretinoin is unusual because it acts on several of these processes at the same time.

It substantially reduces activity of the sebaceous glands, which lowers sebum production. It also helps normalize the way skin cells behave inside hair follicles, reducing the tendency for pores to become blocked. The overall effect is fewer new acne lesions and less inflammation.

The American Academy of Dermatology describes isotretinoin as an acne treatment that targets all four major contributors to acne: excess oil, clogged pores, bacteria and inflammation.

This is one reason isotretinoin can produce longer-lasting improvement than many other acne treatments.

Who may benefit from isotretinoin?

Isotretinoin is generally considered for people with acne such as:

• Severe nodular or cystic acne
• Acne that is causing significant scarring
• Acne that has not responded adequately to appropriate standard treatments
• Acne that repeatedly returns after other treatments
• Acne that is significantly affecting quality of life
• Some cases of moderate but persistent acne when other suitable treatments have failed

The decision is individualized.

Having pimples does not automatically mean you need isotretinoin. Mild acne usually has many effective treatment options that carry fewer risks.

A dermatologist considers the severity of your acne, previous treatments, scarring, medical history, medications, laboratory results, pregnancy potential and other factors before recommending isotretinoin.

Is isotretinoin the strongest acne treatment?

It is often described as the most effective treatment for severe acne, but “strongest” does not mean it is automatically the best treatment for every person.

Isotretinoin has potentially serious risks and requires monitoring. Other treatments may be more appropriate depending on the type and severity of acne.

The American Academy of Dermatology recommends isotretinoin particularly for severe acne or acne that has failed standard oral or topical treatment.

Dermatologist perspective

The American Academy of Dermatology quotes dermatologist William D. James, MD, FAAD, as saying:

“Isotretinoin offers our patients who have severe acne significant, life-changing benefits.”

Dr. James also emphasizes that safe use of the medication is a priority.

That balance is important: isotretinoin can be extremely effective, but it is not a medication to start casually or without appropriate medical supervision.

What are the benefits of isotretinoin?

The biggest potential benefit is substantial and sometimes long-lasting improvement in severe acne.

1. It can clear severe acne

Many patients with deep inflammatory acne experience major improvement during a course of treatment.

2. It can reduce the risk of future acne scarring

Deep inflammatory acne is more likely to leave permanent scars. Controlling severe acne can therefore help reduce the development of additional scars.

3. Results can last after treatment

Unlike some acne medications that must be continued indefinitely, isotretinoin is usually prescribed as a defined course.

Many people experience prolonged clearance after completing treatment, although acne can return in some people and another treatment course may sometimes be considered.

4. It can improve quality of life

Severe acne can affect confidence, social activities, school, work and emotional well-being. Successful treatment can improve more than the appearance of the skin.

How long does isotretinoin treatment take?

A typical course lasts approximately 4 to 6 months, although the exact duration varies.

Some people need a shorter course, while others require longer treatment. The dose and duration are individualized according to factors such as:

• Body weight
• Acne severity
• Treatment response
• Side effects
• The formulation being used
• The dermatologist’s treatment strategy

The American Academy of Dermatology notes that a typical course may take around four to five months, while its patient information also notes that treatment can sometimes take around six months or longer.

Do not try to determine your treatment duration from another person’s experience. Your dermatologist should make that decision based on your response and safety.

What dosage of isotretinoin is used?

There is no single isotretinoin dose that is appropriate for everyone.

Dermatologists may use different dosing strategies, including lower-dose approaches for some patients. The dose may be adjusted during treatment depending on improvement and side effects.

Your prescription may be expressed in milligrams such as 10 mg, 20 mg or another strength, but the capsule strength is not the same thing as a recommended dose for every patient.

Never increase or decrease isotretinoin yourself.

A lower dose does not necessarily mean the medication is ineffective, and a higher dose is not automatically better.

The goal is to achieve effective acne control while keeping treatment safe and tolerable.

What happens before starting isotretinoin?

Before prescribing isotretinoin, a dermatologist usually reviews your medical history and current medications.

You may be asked about:

• Previous acne treatments
• Allergies
• Liver problems
• Cholesterol or triglyceride problems
• Mental health history
• Other medical conditions
• Pregnancy or pregnancy plans
• Breastfeeding
• Vitamins and supplements
• Other prescription or nonprescription medications
• Alcohol use

Laboratory testing may also be performed.

Depending on your circumstances, testing may include blood tests to evaluate things such as blood fats and liver function.

People who can become pregnant require especially strict pregnancy precautions because isotretinoin can cause severe fetal harm.

The monitoring requirements can vary by country and regulatory system, so patients should follow the specific program and instructions applicable where they live.

Isotretinoin and pregnancy: the most important safety warning

Isotretinoin must not be taken during pregnancy.

Exposure during pregnancy can cause severe birth defects and can also result in pregnancy loss.

This is one of the most important facts anyone considering isotretinoin needs to understand.

If you can become pregnant, your dermatologist or healthcare team will explain the pregnancy-prevention requirements that apply to your treatment.

In the United States, isotretinoin is subject to the FDA’s iPLEDGE REMS risk-management program. The program is designed to prevent pregnancy during isotretinoin treatment.

If you become pregnant while taking isotretinoin, contact your healthcare professional immediately.

Do not wait until your next appointment.

Can you take isotretinoin while breastfeeding?

No.

Isotretinoin should not be used while breastfeeding. MedlinePlus specifically advises patients not to breastfeed while taking isotretinoin and for one month after stopping it.

If you are breastfeeding or planning to breastfeed, tell your dermatologist before treatment begins.

Common side effects of isotretinoin

Dryness is extremely common.

Possible side effects include:

• Very dry lips
• Dry or flaky skin
• Dry eyes
• Irritated eyes
• Nose dryness
• Nosebleeds
• Increased sensitivity to sunlight
• Muscle aches
• Joint aches
• Headaches
• Temporary worsening of acne
• Changes in blood cholesterol or triglycerides
• Changes in liver enzymes

The severity varies between patients.

Dry lips

Chapped lips are one of the most recognizable effects of isotretinoin.

Keep a simple lip balm or petroleum-based lip product available and apply it regularly.

Dry skin

Use a gentle cleanser and a fragrance-free moisturizer.

Avoid unnecessarily harsh scrubs, strong exfoliants and irritating skincare products unless your dermatologist specifically recommends them.

Dry eyes

Some people experience dry or irritated eyes, and contact lenses may become uncomfortable.

Artificial tears may help some people, but discuss persistent eye symptoms with your healthcare professional.

Nosebleeds

Dryness inside the nose can lead to nosebleeds.

If you experience frequent or severe nosebleeds, tell your doctor.

Increased sun sensitivity

Isotretinoin can make your skin more sensitive to sunlight.

Use broad-spectrum sunscreen and protect your skin with clothing, shade and other sun-protection measures.

The AAD recommends SPF 30 or higher and emphasizes sun protection during treatment.

Can isotretinoin make acne worse at first?

Yes.

Some people experience an initial worsening or flare of acne after starting isotretinoin.

This does not necessarily mean that the treatment is failing.

The AAD notes that acne may temporarily worsen during the first one to two months for some patients.

However, severe or sudden worsening should still be reported to your dermatologist.

Your doctor may modify your treatment plan if the flare is significant.

Serious isotretinoin side effects

Although many side effects are manageable, isotretinoin can cause serious problems.

Contact your healthcare professional promptly if you develop concerning symptoms.

Potential serious concerns include:

• Severe headache or vision changes
• Significant mood or behavioral changes
• Severe abdominal pain
• Persistent diarrhea
• Rectal bleeding
• Yellowing of the skin or eyes
• Dark urine
• Significant muscle or joint symptoms
• Severe allergic reactions

The AAD recommends reporting possible side effects rather than assuming they are unrelated to isotretinoin.

Mental health and isotretinoin

Mental health deserves careful attention.

People with severe acne can already experience depression, anxiety, social withdrawal and reduced self-esteem. Researchers have investigated whether isotretinoin itself contributes to psychiatric problems, but the relationship is complex.

The AAD notes that more research is needed to determine which patients may be most vulnerable to mood changes. It also emphasizes screening and monitoring patients for depression, anxiety and suicidal thoughts.

If you develop significant depression, unusual behavior, severe anxiety or thoughts of harming yourself while taking isotretinoin, seek medical help immediately.

If you are in immediate danger or believe you may act on thoughts of self-harm, seek emergency assistance in your country.

Isotretinoin and inflammatory bowel disease

You may have heard claims that isotretinoin causes Crohn’s disease or ulcerative colitis.

The evidence is not that simple.

The AAD notes that inflammatory bowel disease and severe acne can both occur in the same person, and that existing research has not established a clear causal relationship between isotretinoin and IBD.

However, severe abdominal pain, persistent diarrhea or rectal bleeding should never be ignored.

Tell your doctor if these symptoms occur.

Does isotretinoin affect the liver or cholesterol?

It can.

Isotretinoin may affect liver enzymes and blood lipid levels, including triglycerides and cholesterol.

That is why your dermatologist may order blood tests before treatment and during treatment.

Your individual monitoring schedule depends on your health, risk factors, treatment dose and local medical practice.

Do not assume that because you feel well, your laboratory results must be normal.

Isotretinoin and alcohol

Alcohol may be an important consideration during treatment because isotretinoin can affect the liver and blood lipid levels.

Tell your dermatologist honestly about your alcohol intake.

Your doctor can give you individualized advice based on your medical history and laboratory results.

What medications and supplements should you avoid?

Always tell your dermatologist about every medication, supplement and vitamin you take.

In particular, do not take vitamin A supplements with isotretinoin unless your healthcare professional specifically tells you to do so.

Excess vitamin A can increase the risk of toxicity because isotretinoin is related to vitamin A.

Some medicines can also interact with isotretinoin.

Never assume that an over-the-counter supplement is automatically safe.

MedlinePlus specifically advises patients to tell their doctor or pharmacist about prescription medications, nonprescription medicines, vitamins, herbal products and supplements.

What skincare should you use while taking isotretinoin?

Think gentle and simple.

A basic routine may include:

Morning

1. Gentle cleanser
2. Moisturizer
3. Broad-spectrum SPF 30 or higher sunscreen

Evening

1. Gentle cleanser
2. Moisturizer
3. Lip moisturizer or protective balm

Your dermatologist may recommend additional products depending on your skin.

During isotretinoin treatment, your skin may be much more sensitive than usual.

Avoid experimenting with multiple strong active ingredients without professional guidance.

The AAD recommends gentle skincare and notes that harsh or irritating products can worsen discomfort during treatment.

Can you use benzoyl peroxide or salicylic acid with isotretinoin?

Sometimes, but do not automatically combine them.

Your dermatologist may recommend certain topical treatments in selected situations, but isotretinoin can make the skin significantly drier and more sensitive.

The NHS advises people taking isotretinoin to avoid certain potentially irritating acne products, including salicylic acid and benzoyl peroxide, unless otherwise advised.

Follow your dermatologist’s specific skincare plan rather than copying someone else’s routine.

Can you wax while taking isotretinoin?

Waxing is generally avoided during treatment and for a period after treatment because isotretinoin can make the skin more fragile.

The AAD advises avoiding waxing during isotretinoin treatment and for six months afterward.

Ask your dermatologist before resuming waxing.

Can you have laser treatment or chemical peels while taking isotretinoin?

Do not schedule cosmetic laser treatments, dermabrasion or chemical peels without discussing them with your dermatologist.

Historically, clinicians have been particularly cautious about procedures that intentionally injure or resurface the skin while a patient is taking isotretinoin.

The AAD and other medical sources recommend discussing these procedures with your treating dermatologist because the appropriate timing depends on the procedure and the individual patient.

Can you exercise while taking isotretinoin?

Many people continue normal physical activity while taking isotretinoin, but muscle and joint pain can occur.

If you develop significant muscle pain, joint pain or unusual weakness, tell your healthcare professional.

The NHS specifically cautions about excessive intense exercise during treatment because of the possibility of severe muscle and joint symptoms and, rarely, more serious complications.

Can isotretinoin cause permanent side effects?

Most common side effects improve after treatment ends, but some adverse effects can persist in some people.

Because isotretinoin is a powerful medication, it is important not to dismiss persistent or unusual symptoms.

If something continues after you stop isotretinoin, discuss it with your doctor rather than assuming it is permanent or unrelated.

Can men take isotretinoin?

Yes.

Men can take isotretinoin when a dermatologist determines that it is appropriate.

The pregnancy-related fetal risk applies to someone who becomes pregnant. Current evidence does not indicate that isotretinoin taken by a man causes birth defects in children fathered by him. DermNet notes that isotretinoin has no known effect on sperm or male fertility in this context.

Men still need to follow the medication’s other safety and monitoring requirements.

Does isotretinoin permanently cure acne?

Not always.

Some people experience long-term or permanent clearance after one course, while others experience recurrence.

The AAD states that isotretinoin often results in prolonged clearance, which can be permanent for some patients. A second course may sometimes be considered if acne returns, depending on the individual’s circumstances.

So it is better to think of isotretinoin as a treatment that can produce long-lasting remission, rather than promising that acne can never return.

Will isotretinoin remove acne scars?

Not exactly.

Isotretinoin primarily treats active acne.

It can help prevent additional scars by controlling severe inflammatory acne, but established depressed or raised acne scars usually require separate scar treatment.

Once active acne is controlled, a dermatologist can evaluate scar treatment options such as:

• Microneedling
• Fractional laser treatments
• Subcision
• Chemical peels
• Other scar procedures

The correct option depends on the type, depth and location of the scars.

Dermatologist perspective on realistic expectations

A useful principle in acne treatment is that improvement takes time.

The goal is not necessarily to wake up with perfect skin after a few weeks. Your dermatologist may gradually adjust treatment based on your response and side effects.

For patients taking isotretinoin, the treatment plan should be viewed as a monitored medical process rather than a simple acne pill.

Important safety checklist

Before starting isotretinoin, make sure your dermatologist knows if you:

• Are pregnant or could become pregnant
• Are planning pregnancy
• Are breastfeeding
• Have liver disease
• Have high cholesterol or triglycerides
• Have a history of depression or other mental health problems
• Take vitamin A
• Take other prescription medicines
• Use herbal supplements
• Have significant gastrointestinal disease
• Have allergies
• Drink alcohol regularly

During treatment:

• Take only the prescribed dose.
• Attend your follow-up appointments.
• Complete required laboratory testing.
• Follow pregnancy-prevention requirements if applicable.
• Protect your skin from the sun.
• Moisturize your skin and lips.
• Tell your doctor about significant side effects.
• Do not share your medication.
• Do not buy isotretinoin from an unverified online seller.

The AAD specifically warns that obtaining isotretinoin from websites that do not require a prescription can put your health at serious risk.

Three dermatologist insights

William D. James, MD, FAAD

The American Academy of Dermatology quotes dermatologist William D. James, MD, FAAD:

“Isotretinoin offers our patients who have severe acne significant, life-changing benefits.”

This captures an important point: isotretinoin is not prescribed simply for cosmetic reasons. For people with severe, painful or scarring acne, successful treatment can have a meaningful impact on daily life.

J. Klint Peebles, MD, FAAD

Board-certified dermatologist J. Klint Peebles, MD, FAAD, has emphasized individualized treatment when discussing isotretinoin for acne:

“With a dermatologist’s guidance, this is often an effective treatment for acne triggered by testosterone.”

Although his comment was made in the context of testosterone-associated acne, the underlying principle applies broadly: isotretinoin should be selected and monitored according to the individual patient rather than used as a one-size-fits-all treatment.

A practical dermatologist takeaway

The safest way to think about isotretinoin is this:

It can be one of the most effective tools for severe acne, but its effectiveness does not remove the need for careful medical supervision.

Because treatment decisions depend on medical history, laboratory findings, pregnancy risk, side effects and response, an internet article cannot determine whether isotretinoin is right for a particular person.

Isotretinoin myths vs facts

Myth: Isotretinoin is just a stronger vitamin A supplement.

Fact: Isotretinoin is a prescription retinoid medication. It is chemically related to vitamin A but should never be treated like an ordinary nutritional supplement.

Myth: Everyone taking isotretinoin develops dangerous side effects.

Fact: Many people tolerate treatment with appropriate monitoring, but serious side effects are possible. That is why medical supervision is important.

Myth: You should stop isotretinoin whenever your skin becomes dry.

Fact: Dryness is common, but you should discuss side effects with your dermatologist before changing or stopping treatment.

Myth: Isotretinoin guarantees permanent acne-free skin.

Fact: Many people experience prolonged clearance, but acne can return in some patients.

Myth: Isotretinoin can be safely taken during pregnancy.

Fact: Absolutely not. Isotretinoin can cause severe fetal harm and must not be taken during pregnancy.

Myth: You can buy isotretinoin online without medical supervision.

Fact: Buying prescription isotretinoin from an unverified source can expose you to counterfeit, incorrectly dosed or unsafe medication. Medical supervision is essential.

Frequently Asked Questions About Isotretinoin

What is isotretinoin used for?

Isotretinoin is primarily used to treat severe acne, especially deep nodular or cystic acne and acne that has not responded adequately to other treatments. It may also be considered when acne is causing significant scarring or psychological distress.

Is isotretinoin the same as Accutane?

Accutane was a brand name for isotretinoin. Although that particular brand is no longer available in the United States, people commonly continue to use the name “Accutane” when referring to isotretinoin.

How long does isotretinoin take to work?

Improvement usually takes time. Some people may initially experience worsening acne. Significant improvement generally develops over the following months rather than within a few days.

How long do you usually take isotretinoin?

A typical course lasts approximately four to six months, but treatment may be shorter or longer depending on the patient’s response and treatment strategy.

Does isotretinoin permanently cure acne?

It can produce prolonged or sometimes permanent clearance, but acne can return in some people. A second course may sometimes be appropriate if acne returns.

Can isotretinoin be taken during pregnancy?

No. Isotretinoin is strongly contraindicated during pregnancy because it can cause severe birth defects and pregnancy loss.

Can I breastfeed while taking isotretinoin?

No. Isotretinoin should not be taken while breastfeeding. MedlinePlus advises avoiding breastfeeding during treatment and for one month after stopping.

Does isotretinoin cause dry lips?

Yes. Dry, cracked lips are among the most common effects of isotretinoin. Regular use of a protective lip moisturizer can help manage this symptom.

Does isotretinoin cause hair loss?

Hair thinning can occur in some patients. If you notice significant hair loss, discuss it with your dermatologist.

Can isotretinoin cause depression?

Mood changes have been reported, and researchers continue to study the relationship between isotretinoin, acne and mental health. Severe acne itself can also affect mental health. Any significant mood change, depression or suicidal thoughts during treatment should be reported immediately to a healthcare professional.

Does isotretinoin damage the liver?

Isotretinoin can affect liver enzymes in some patients, which is one reason doctors may monitor liver function with blood tests.

Can isotretinoin increase cholesterol?

Yes. Isotretinoin can affect blood lipid levels, including triglycerides and cholesterol. Your doctor may monitor these levels during treatment.

Can I drink alcohol while taking isotretinoin?

Discuss alcohol use with your dermatologist. Alcohol may be particularly relevant because isotretinoin can affect the liver and blood lipid levels.

Can I wax while taking isotretinoin?

Waxing should generally be avoided during treatment and for six months afterward according to AAD patient guidance because of the risk of skin injury.

Can I use skincare products while taking isotretinoin?

Yes, but keep your routine gentle. Moisturizer, gentle cleansing and sunscreen are usually important. Strong exfoliants and irritating acne products may become harder to tolerate during treatment.

Can I use sunscreen while taking isotretinoin?

Yes. Sun protection is particularly important because your skin may become more sensitive to sunlight. AAD recommends broad-spectrum SPF 30 or higher.

Can isotretinoin remove acne scars?

It mainly treats active acne rather than established scars. Its ability to control severe acne can help prevent additional scarring, while existing scars may require separate treatment.

Should I stop isotretinoin if my acne gets worse?

Do not change your dose or stop treatment without contacting your dermatologist. Acne can temporarily worsen during the early stages of treatment, but your doctor should determine whether the reaction is expected or requires a change in treatment.

The bottom line

Isotretinoin is one of the most effective treatments available for severe acne, particularly acne that is painful, scarring or resistant to other appropriate treatments.

Its strength is also the reason it requires careful supervision.

The most important things to remember are:

• Isotretinoin is a prescription medication.
• It is primarily used for severe or treatment-resistant acne.
• It can produce long-lasting acne clearance.
• Dry lips and dry skin are very common.
• Blood tests may be needed to monitor treatment.
• It can affect blood lipids and liver enzymes.
• Mental health symptoms should be taken seriously.
• It must not be used during pregnancy.
• Breastfeeding should be avoided during treatment.
• Certain cosmetic procedures, including waxing and some resurfacing treatments, may need to be postponed.
• Do not take vitamin A supplements unless your doctor specifically recommends them.
• Never change your dose without medical advice.
• Never buy isotretinoin from an unverified source.

If you are considering isotretinoin, the best next step is not to choose a dose based on what worked for someone else. Instead, see a qualified dermatologist who can assess your acne, medical history, pregnancy risk where applicable, medications and laboratory results and determine whether isotretinoin is appropriate for you.

Sources and further reading

American Academy of Dermatology (AAD) — The AAD provides detailed patient information about isotretinoin, including its benefits, risks, side effects, monitoring and acne treatment recommendations.

MedlinePlus, U.S. National Library of Medicine — Provides patient-focused information about isotretinoin, precautions, interactions, side effects and pregnancy/breastfeeding warnings.

Wikipedia: Isotretinoin — Provides a general reference overview of isotretinoin, its chemical classification, history, uses and pharmacology. Wikipedia should be treated as a starting reference rather than a substitute for clinical guidance.

DermNet New Zealand — Provides dermatologist-oriented information about isotretinoin, pregnancy precautions and other safety considerations.

NHS — Provides patient guidance concerning isotretinoin, pregnancy, breastfeeding, sun exposure, side effects and precautions.

Medical disclaimer

This article is intended for general educational purposes only. It does not diagnose acne or recommend a specific medication or dosage for any individual. Isotretinoin can cause serious adverse effects and must be prescribed and monitored by an appropriately qualified healthcare professional. If you are taking isotretinoin and develop severe symptoms, pregnancy, significant mood changes, severe abdominal symptoms, vision changes or another concerning reaction, contact your healthcare professional promptly.