If you are having any symptoms or have any questions, please call 811 to speak with a registered nurse 24 hours a day.

What is isotretinoin?

Isotretinoin is a medicine used to treat very bad acne. It is usually used for cystic acne that did not get better after treatment with other medicines. It is important for you to take isotretinoin the right way. You should also know about the side effects of isotretinoin. Contact your healthcare provider if you have any questions about this medicine or if you have side effects when you take it.

Before taking isotretinoin, tell your doctor if you or anyone in your family has any of these conditions:

• diabetes
• asthma
• liver disease
• heart disease
• depression

You should also tell your healthcare provider if you are allergic to any medicines, especially parabens (chemicals used in cosmetics, moisturizers and isotretinoin). Be sure to tell your healthcare provider if you are taking any other medicines, even over-the-counter medicines.

Path to improved health

Isotretinoin has been prescribed just for you. Don’t share it with other people and keep it away from children. You should take isotretinoin with food. You don’t have to keep the medicine in the refrigerator, but keep it out of sunlight. Don’t keep it in a place that is very warm.

You may not give blood while you are taking this medicine or for at least 1 month after you stop taking it. You should also not have cosmetic procedures done to smooth your skin (such as waxing) while you are taking isotretinoin and for at least 6 months after you stop.

Isotretinoin is like vitamin A, so while you are taking isotretinoin, you should not take vitamin A pills or multivitamins that contain vitamin A. You also should not take any antibiotics without talking to your healthcare provider first.

What should I expect during treatment?

The dosage of isotretinoin is different for each person. During your treatment, your healthcare provider may change your dosage. Be sure to take isotretinoin just the way your healthcare provider tells you. If you miss one dose, don’t take extra the next time. You will probably take isotretinoin for 15 to 20 weeks.

Your acne may get worse when you first start using isotretinoin. This usually just lasts for a little while. If this happens to you, your healthcare provider may have you use other medicines along with the isotretinoin in this stage.

Your healthcare provider needs to check on you often. Be sure you keep all of your appointments with your healthcare provider. They may check your cholesterol levels and your liver.

What should I expect after treatment?

Your skin might keep getting better even after you stop taking isotretinoin. Most of the side effects go away in a few days or weeks after you stop taking isotretinoin. If your side effects last for more than a few weeks after you stop taking this medicine, contact your healthcare provider.

Your acne may not get better the first time you use isotretinoin for 15 to 20 weeks. If you need to take isotretinoin again, you can start taking it 5 months after your first treatment is over.

Does isotretinoin have any side effects?

During treatment, you may have some of the following side effects. These side effects usually go away when you stop taking isotretinoin:

• Dry skin and lips–your healthcare provider can suggest lotions or creams to use
• Fragile (easily injured) skin, itching or rash
• Increased sensitivity to the sun (easily sunburned)
• Peeling skin on your palms and soles
• Thinning hair
• Dry, red eyes–you may find that you can’t wear your contact lenses during treatment
• Nosebleeds
• Bleeding gums
• Pain in your muscles
• Vision problems such as decreased night vision

A few people have even more serious side effects. If these problems aren’t treated, they could last even after you stop taking isotretinoin. If you have any of the side effects listed below, stop taking isotretinoin and check with your healthcare provider right away:

• Headaches, nausea, vomiting, or blurred vision
• Depression or changes in your mood, such as feelings of sadness or irritability
• Unusual tiredness or lack of appetite
• Severe stomach pain, diarrhea, or bleeding from your rectum
• Very dry eyes
• A yellow color in your skin or eyes, and dark yellow urine

Are there special concerns for girls and women?

You must not take isotretinoin if you are pregnant or if there is any chance you might get pregnant while taking this medicine!

Isotretinoin causes severe birth defects, including:

• Malformation of the head and face.
• Intellectual disability.
• Severe internal defects of the brain, heart, glands, and nervous system

It can also cause miscarriage, premature birth, or death of the fetus

In order to prevent pregnancy, you must use 2 forms of birth control at the same time for at least 1 month before you start taking isotretinoin and during the entire time you are taking this medicine. Keep using 2 forms of birth control for 1 month after you stop taking isotretinoin.

Your healthcare provider will make sure you are not pregnant before you start taking isotretinoin. Your healthcare provider will check again every month while you are taking it. You will be asked to read and sign a consent form to show that you understand the dangers of birth defects and agree to use 2 forms of birth control. If your period is late, stop taking isotretinoin and contact your healthcare provider right away.

FOR MORE INFORMATION

Health Canada
https://www.canada.ca/en/health-canada/services/drugs-medical-devices/acne-treatments.html