It goes on your skin.
No medical procedure, no insertion, no daily pill.
One patch. All week.
Change it once a week on the same day.
After every 3 weeks, you have a patch-free week.
Made to stay put.
Check it once daily.
Check your patch daily and after any water exposure to make sure all edges are sticking correctly (so it works right). Avoid contact with water for 30 minutes or more.
Low-dose estrogen.
20 mcg of estrogen delivered daily.
See more information below.
See the Instructions for Use, and ask your doctor if you have any questions.
Gwyn Lo is a birth control patch for women with a BMI less than 30 kg/m2 who can become pregnant.
BMI=body mass index.
Small, subtle, and wearable.
Slightly larger than a quarter, about 1.5 inches across.
Wear it on your lower abdomen, upper arm, back, or butt—it's up to you.
Put your patch on clean, dry skin where it will not be rubbed by tight clothing. Do not apply the patch on your breasts, cut or irritated skin, or the same place as your last patch—but you can use the same body part.
Easily hide it under clothes. Or not.
Designed to stay on all week.
~99% of the 39,790 Gwyn Lo patches worn in a year-long study stayed on.
▪ 1.3% of patches fully detached over 7 days of wear
Gwyn Lo was studied in real-life activities:
After 7 days of wear during activity and water exposure, 94% of the 342 Gwyn Lo patches worn in 4 additional studies had three quarters or more of the patch still attached.
Treadmill
Sauna
Hot tub
Check your patch daily and after any water exposure to make sure all edges are sticking correctly (so it works right).
Avoid contact with water for 30 minutes or longer as it can cause the patch to not stick, making Gwyn Lo less effective.
Low estrogen, delivered all week.
Intentionally low estrogen.
Gwyn Lo delivers 20 mcg of estrogen per day.
Made for consistent hormone delivery.
Gwyn Lo delivers estrogen and progestin through your skin over the course of the week when used as directed.
Questions? Start here.
Here are quick answers to help you learn more.
Gwyn Lo was studied in 983 women who used it for about a year. In the study, 4 out of 100 women got pregnant within a year of using Gwyn Lo. That means 96% of women avoided pregnancy when using Gwyn Lo as directed.
Combined hormonal birth control helps prevent pregnancy by using 2 hormones: estrogen and progestin. Gwyn Lo works by delivering estrogen and progestin through your skin over the course of the week when used as directed.
Only if you want them to! You can easily hide it under clothes, or not.
The Gwyn Lo patch is:
- Small and subtle
- Slightly larger than a quarter. It's about 1.5 inches across
- Wearable in 4 areas: your abdomen, upper arm, back, and butt
Don't put your patch on the same place as your last one—but you can use the same body part. Avoid sticking the patch on your breasts, cut or irritated skin, or areas where tight clothing may rub.
