Transdermal Patch (EVRA) . It is a 4 x 4 cm beige patch that sticks to a woman’s skin and continuously releases 2.
Likewise, it can also thicken the cervical mucus, cause endometrial atrophy and possibly impair tubal transport. Dosage. Each patch is worn for seven days. A patch is applied to clean, dry, intact skin on the shoulder, abdomen, buttocks or torso (not on the breasts) on the first day of the menstrual period. This becomes the “Patch Change Day”. A patch is applied weekly on the patch change day for three weeks. The fourth week is patch- free, allowing for menses. Alternately, the patch can be used semi- continuously like the oral contraceptive pill, by eliminating the patch- free week to skip menses. Effectiveness. Like the combined oral contraceptive, the patch has a failure rate of 0. It may be less effective in women who weigh more than 9. The patch may work better than the combined OCP in women who have trouble remembering to take a pill every day. One study showed 8. Comparison of birth control methods Effectiveness of. Different types of birth control methods have large differences in effectiveness, actions required of. Contraceptive patch: Ortho Evra, the patch. You wear a new birth control patch for 1 week. Then you replace it on the same day of the week for 3 weeks in a row. During the fourth week, you don’t wear a patch. You’ll have your period then. The contraceptive patch. Advantages. Effective birth control that only needs to be remembered once per week Continual release gives steady serum hormone levels; no fluctuations Avoids the gastrointestinal tract and the “first pass effect” Cycle control; timed, lighter periods Reversible; no delay to fertility Other non- contraceptive benefits are assumed to be similar to the combined oral contraceptive. Disadvantages/Side Effects. Does not protect against sexually transmitted infections or HIV. Costs slightly more than the Pill (cost to pharmacies is $1. OCP), and may not yet be covered by all drug plans. Same contraindications as the combined oral contraceptive. Nuisance side effects when starting can include breakthrough bleeding, breast tenderness, headaches, or nausea, similar to the combined oral contraceptive. Skin irritation from the strong adhesive of the patch is common (2. Rotating the site is recommended. How to start. The first patch should be applied on the first day of bleeding. Women switching from a combined oral contraceptive should also start on their first day of bleeding (not when they would have started the next pack of pills) because of the delayed rise to therapeutic serum levels. If the patch is applied after the first day of the period, the woman may not be protected from pregnancy and should use a back- up method of contraception if she has intercourse in the first 7 days of the cycle. An alternative is the “Quick Start” method, which is useful if contraception is needed quickly. After excluding pregnancy, the first patch can be applied at the office visit, regardless of where the patient is in her cycle. Back- up contraception is needed for 7 days. Troubleshooting. The woman should check each day to make sure the patch is still well applied. If the edges come loose. She can try to smooth it back on by pressing with her hand for 1. She will have a new patch change day and will need to use a back- up method of birth control for the next week. Forgotten patch change (2 days or less)She should apply a new patch when she remembers, is still protected against pregnancy. She can either keep the same patch change day or adopt the new one. If she is more than 2 days late in changing the patch, she should start a new four- week cycle as soon as possible. The patch change day will change, and she will need to use a back- up method of birth control for the first week. Forgotten patch removal at the start of the patch- free week The patch should be removed when remembered and the next cycle started on the usual day. Prolonged patch- free interval. If the patch- free interval is longer than 7 days, there is a risk of pregnancy. She should begin the new cycle as soon as possible as long as pregnancy is excluded (consider emergency contraception if necessary). She will need to use back up birth control for the first week of the new cycle. Your use of the information on this site is subject to the terms of our Legal Notice. Please see our Privacy Policy. This site is published by Janssen Pharmaceuticals, Inc., which is solely responsible for its contents. Capitalized product names are trademarks of Janssen Pharmaceuticals, Inc. This information is intended for use by our customers, patients, and healthcare professionals in the United States only. Janssen Pharmaceuticals, Inc., recognizes that the Internet is a global communications medium; however, laws, regulatory requirements, and medical practices for pharmaceutical products vary from country to country. The prescribing information included here may not be appropriate for use outside the United States. Last Updated: August 3.
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