Accutane (isotretinoin) is one of the most effective acne treatments available, but it comes with a longer list of side effects than almost any other medication prescribed for skin. Most of those side effects are manageable and temporary. A few are serious enough to require monitoring. Whether it’s “bad” depends on what you’re weighing it against, so here’s what actually happens to your body on this drug.
What Nearly Everyone Experiences
Dryness is the defining side effect. In clinical surveys, about 52% of patients report dryness as their most significant complaint. When broken down further, roughly 46% experience noticeable skin dryness and 34% deal with dry eyes and nasal passages. These numbers are conservative because milder dryness is so universal that many patients don’t even flag it as a problem.
Your lips will crack. This is practically guaranteed and starts within the first week or two for most people. Lip balm becomes a constant companion. Your skin will feel tight, your nose may bleed from dryness, and your eyes may feel gritty, especially if you wear contact lenses. These effects are dose-dependent, meaning higher doses produce more severe dryness, and they resolve after you stop taking the drug.
Joint Pain and Muscle Aches
Joint and muscle pain are well-documented side effects that can range from mild stiffness to enough discomfort that it limits exercise. For most patients, the pain is manageable and goes away after the course ends. If you’re physically active, especially in sports that stress your joints, you may need to scale back during treatment.
For adolescents who are still growing, there’s a more specific concern. Isotretinoin has been linked to premature closure of growth plates, the areas of developing cartilage near the ends of bones that allow them to lengthen. This effect is related to dose, age, and treatment duration, with younger patients on higher doses facing more risk. It’s rare at standard acne doses, but it’s a real consideration. If growth slows during treatment, stopping the medication can allow normal growth to resume, as long as the growth plates haven’t fully fused.
Hair Thinning
Hair loss is less common than the dryness side effects but more distressing when it happens. At standard or higher doses (0.5 mg/kg/day or above), about 5.7% of patients experience some degree of hair thinning. At lower doses, that drops to around 3.2%. This is typically a diffuse thinning rather than bald patches, caused by the drug pushing hair follicles into their resting phase prematurely. For most people, hair density recovers after completing the course, though the timeline varies.
The Depression Question
This is the side effect people worry about most, and the one with the most complicated answer. Accutane carries an FDA warning about depression and suicidal thoughts, and individual reports of mood changes during treatment are common enough to take seriously.
But the large-scale data tells a different story than you might expect. A global study comparing over 75,000 isotretinoin patients to the same number of acne patients treated with oral antibiotics found that isotretinoin users actually had a lower rate of depression overall. They also had lower rates of anxiety, PTSD, bipolar disorder, and several other psychiatric conditions. The rate of suicide attempts was statistically the same between both groups.
The one exception: suicidal ideation was about 41% more common in isotretinoin users. That’s a meaningful signal, even though it didn’t translate into more actual attempts. One explanation is that severe acne itself causes significant psychological distress, and separating the drug’s effects from the disease’s effects is genuinely difficult. Another is that patients on isotretinoin are monitored more closely, so suicidal thoughts are more likely to be documented.
The practical takeaway is that mood changes during treatment are real and worth paying attention to, but the drug does not appear to cause depression at a population level. If you have a history of depression or mental health conditions, that’s a conversation to have with your prescriber before starting.
Blood Work and Organ Monitoring
Isotretinoin can raise your blood lipids (cholesterol and triglycerides) and stress your liver. This is why you’ll need blood tests during treatment. There are no universal evidence-based guidelines for exactly how often, but a common approach is to check a lipid panel and liver function at baseline, then again about two months in, with additional testing if anything looks off.
For the vast majority of patients on a standard course, blood values stay within acceptable ranges and don’t interrupt treatment. The elevations are typically temporary and normalize after the drug is stopped. You’ll be told to limit or avoid alcohol during treatment because it compounds the liver strain.
Gut Health Concerns
For years, lawsuits and news reports linked Accutane to inflammatory bowel disease, particularly Crohn’s disease. A large global study of over 154,000 patients has largely put this to rest. The lifetime risk of Crohn’s disease was the same in isotretinoin users as in acne patients taking oral antibiotics. The risk of ulcerative colitis was slightly elevated in the first six months after starting treatment, but the absolute difference was tiny: about 5 additional cases per 10,000 patients. After six months, even that small bump disappeared.
So while gut symptoms can occur during treatment, the drug does not appear to cause lasting inflammatory bowel disease in any meaningful way.
Pregnancy: The One Non-Negotiable Risk
Isotretinoin causes severe, life-threatening birth defects. This is not a theoretical risk or a rare complication. It is one of the most potent teratogens (substances that cause fetal malformations) in modern medicine. There is no safe dose during pregnancy.
Because of this, the FDA requires every patient, prescriber, and pharmacy to participate in a program called iPLEDGE. If you can become pregnant, you’ll need to use two forms of contraception and take regular pregnancy tests throughout treatment. The first pregnancy test must be done in a medical setting. More recent updates to the program allow at-home tests during and after treatment if your prescriber approves, and they’ve removed the waiting period if you miss your pickup window for a prescription refill. These changes, finalized in early 2026, were designed to reduce the logistical burden while keeping the pregnancy prevention measures intact.
What You Can’t Mix With It
Isotretinoin is essentially a concentrated form of vitamin A, so taking vitamin A supplements on top of it can push you into toxic territory. You should also avoid tetracycline antibiotics (a class commonly prescribed for acne) because the combination raises the risk of a dangerous increase in pressure inside the skull. Other topical acne treatments can make skin irritation significantly worse when layered with isotretinoin, so most dermatologists will have you stop everything else when you start your course.
How Well It Actually Works
The reason people accept these risks is that isotretinoin works better than anything else for severe acne. Relapse rates after a full course range widely, from about 10% to 60% depending on the study, the dose used, and how long patients were followed. A large study of over 17,000 patients found a 41% relapse rate, while others with stricter dosing protocols reported rates as low as 9% to 15%.
What “relapse” means also varies. For many patients, it means occasional breakouts that respond to standard topical treatments, not a return to the severe cystic acne that prompted isotretinoin in the first place. Some patients do need a second course, but even then, the drug’s track record for producing lasting improvement is stronger than any alternative for moderate-to-severe acne.
Putting the Risks in Perspective
The side effects of isotretinoin are real, well-documented, and more extensive than what you’d expect from a typical prescription. But “how bad” it is depends on context. The dryness is universal and annoying but temporary. The blood work changes are almost always manageable. The depression link is weaker than its reputation suggests. The gut disease connection has largely been debunked. The pregnancy risk is absolute and requires strict compliance, but the monitoring system exists for exactly that reason.
Most people who complete a course of isotretinoin describe the side effects as tolerable, particularly when weighed against years of painful, scarring acne that didn’t respond to anything else. The drug is not casual, and it’s not without cost to your comfort during treatment. But for the condition it treats, it remains the most effective option available.