By a practising Australian doctor
If you are over 30 and still standing in front of the mirror feeling defeated by deep, painful lumps along your jawline, chin, chest, or back, you are not alone. Adult acne is common, but it is also cruel. It arrives before a wedding, a job interview, or a date. It leaves red marks, dark spots, and permanent pitted scars. You have probably already tried antibiotic creams, oral antibiotics, hormonal pills, expensive serums, LED masks, chemical peels, and supplements that promised miracles — and yet the breakouts keep coming back.
This is not a hygiene problem. It is not because you eat too much chocolate. It is a medical condition of the oil glands and hair follicles, driven by inflammation, hormones, and the bacterium Cutibacterium acnes. And for many adults, there is one treatment that remains the gold standard when everything else has failed: isotretinoin.
Isotretinoin, known in Australia by brands such as Roaccutane, Oratane, and Isotroin, is a vitamin A derivative that works on all four major causes of acne simultaneously. It dramatically shrinks the sebaceous oil glands, reducing the oil that feeds acne bacteria. It normalises the shedding of skin cells inside hair follicles so they do not clog. It reduces inflammation. And it creates an environment where Cutibacterium acnes cannot thrive.
Unlike antibiotics that you use for years, isotretinoin is typically taken for 4 to 12 months. The goal is cumulative dosing. In many cases, the result is long-term remission — often described by doctors and patients as the closest thing to a cure. For an adult who has spent a decade battling acne, this is life-changing.
Many patients over 30 are understandably cautious. They have heard frightening stories about isotretinoin. As a doctor, I want you to have transparent, accurate information. Here are the questions I hear most often in my practice, answered from an Australian prescribing perspective.
| Question | Doctor’s Answer |
|---|---|
| What is the cost of isotretinoin without PBS in Australia? | If you do not meet PBS criteria, a private prescription for generic isotretinoin (e.g. Oratane or Isotroin) typically costs approximately $80 to $150 per month depending on your daily dose and pharmacy. Branded Roaccutane may range from $120 to $200 per month. This is not cheap, but when you add up years of failed creams, facials, and lost confidence, many patients find it worthwhile. Under PBS, eligible patients pay only the standard co-payment. |
| Does isotretinoin affect vision or night vision? | Yes, it can. The most common visual side effect is dry eye, which can cause blurring, grittiness, and glare. Some patients notice reduced night vision or slower adjustment from bright light to dark. These effects are usually mild and reversible after stopping the drug. However, if you do a lot of night driving or work in low-light conditions, tell your doctor. We may recommend lubricating eye drops, a lower dose, or an ophthalmology review. |
| Can isotretinoin be used for other skin conditions besides acne? | Absolutely. Although isotretinoin is registered in Australia for severe acne, dermatologists frequently prescribe it off-label for other stubborn conditions, including rosacea, hidradenitis suppurativa, sebaceous hyperplasia, dissecting cellulitis of the scalp, and certain forms of folliculitis. Its ability to reduce oil, inflammation, and abnormal skin cell turnover makes it useful well beyond acne. |
| Can isotretinoin affect the immune system? | Isotretinoin is not an immunosuppressant like corticosteroids or biologic drugs. It does not put you at high risk for frequent infections. However, it has immunomodulatory effects — it alters certain inflammatory pathways and white cell behaviour. Some patients may have mild changes in white blood cell counts on blood tests, but these are rarely clinically significant. If you have an immune disorder, your doctor will monitor you carefully. |
| Is isotretinoin linked to inflammatory bowel disease? | This has been a controversial topic for years. Large studies and meta-analyses have not confirmed a strong causal link between isotretinoin and inflammatory bowel disease (IBD). However, because some individual reports exist, doctors are cautious if you have a personal or family history of Crohn’s disease or ulcerative colitis, or if you develop persistent abdominal pain, bloody diarrhoea, or severe cramping. Always report these symptoms immediately. |
| What is the PBS listing for isotretinoin in Australia? | Isotretinoin is listed on the Pharmaceutical Benefits Scheme (PBS) as an Authority Required (STREAMLINED) medication. It is subsidised for patients with severe cystic acne vulgaris that has not responded to adequate standard therapy, including systemic antibiotics and topical treatments. Prescribing is generally initiated by a dermatologist or by a GP in consultation with a dermatologist. Under PBS, eligible patients pay only the standard co-payment — around $30 for general patients and $7–$8 for concession card holders, as of 2025. |
| Can isotretinoin cause pseudoporphyria? | Yes, but it is rare. Pseudoporphyria is a condition involving skin fragility and blistering on sun-exposed areas such as the backs of the hands, face, and forearms. It looks similar to porphyria cutanea tarda, but blood porphyrin levels are normal. The main risk factors are high doses of isotretinoin combined with significant sun exposure. The treatment is straightforward: stop isotretinoin, protect your skin from UV light, and the blisters usually heal over weeks. |
| What is the role of antihistamines for isotretinoin side effects? | As isotretinoin dries the skin, many patients develop itchiness, eczema-like patches, or hives. Non-sedating antihistamines such as loratadine, cetirizine, or fexofenadine can significantly reduce itching and improve comfort. They do not treat the underlying dryness, but they reduce the urge to scratch, which lowers the risk of skin damage and infection, and helps you stay consistent with your isotretinoin course. |
By the time most adults reach my office, they are exhausted. They have spent thousands of dollars on products that did not work. They have cancelled beach days, avoided photography, and felt unprofessional at work. Adult acne steals self-esteem in a way that is hard to explain unless you have lived it.
Isotretinoin offers something that creams and antibiotics rarely provide: a defined end point. A typical course lasts 6 to 9 months. You take a capsule once or twice daily with food. Your skin becomes dry — we manage that with moisturisers, lip balm, and sometimes antihistamines. You have regular blood tests to monitor cholesterol, liver function, and pregnancy prevention. Then, in most cases, you finish. And for the majority of patients, the severe acne does not return.
For patients over 30, the benefits often outweigh the risks. The key is careful monitoring and honest communication. You must avoid pregnancy while taking isotretinoin and for at least one month after stopping, because it can cause serious birth defects. You should avoid waxing, dermabrasion, and excessive sun exposure during treatment. But these are temporary precautions — and they are far easier to manage than a lifetime of scarring.
If you are over 30 and still suffering from deep, painful, or scarring acne, do not wait another five years. Isotretinoin is not a first-line treatment for mild pimples, but if you have failed adequate courses of antibiotics, hormonal therapy, or topical treatments, you may be an excellent candidate. In Australia, isotretinoin is available only by prescription. The safe and legal way to buy isotretinoin is through an Australian-registered doctor and a local pharmacy. Avoid online sellers that do not ask for a prescription — the risks are simply not worth it.
Book an appointment with your GP or ask for a referral to a dermatologist. Bring a list of all the treatments you have tried. Be honest about your mental health, your bowel symptoms, your vision, and your plans for pregnancy. With the right monitoring, isotretinoin can be one of the most rewarding decisions you ever make for your skin.
Clear skin is not vanity — it is confidence, comfort, and quality of life. You deserve it.