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Sronyx Dosing

To ensure the effectiveness of Sronyx, dosing guidelines must be followed carefully. You can start Sronyx either on the first day of your period or on the first Sunday after your period begins. Starting at the beginning of the pack, take one tablet daily at the same time each day. After finishing a pack, start a new one the next day.

Sronyx Dosing: An Introduction

Sronyx™ (levonorgestrel/ethinyl estradiol) is a generic version of Levlite®. There is only one standard dose of Sronyx. As always, do not adjust your Sronyx dose unless your healthcare provider specifically instructs you to do so. Even though Sronyx is very effective when taking as directed, not taking Sronyx correctly increases the risk of unintentional pregnancy.

Starting Sronyx for the First Time

When you take Sronyx for the first time, you can start it either on the first day of your period or on the first Sunday after your period starts. It is thought that starting on Sunday may decrease the chance that you will have your periods on the weekends (although this is not always the case).
If you start Sronyx on the first day of your period (a "day 1 start"), you do not need any backup contraception. If you choose a Sunday start, you need to use a backup method of contraception (such as condoms) for the first week. If the first day of your period happens to be on a Sunday, treat this as a day 1 start (no backup needed).
Check with your healthcare provider for more specific instructions if you are starting Sronyx after a birth, miscarriage, or abortion, or are switching from a different birth control pill, patch, ring, or injection.

Sronyx Dosing for Birth Control

Starting at the beginning of the pack, take one tablet daily at the same time each day. Each pack will last for 28 days (four weeks). After you finish one pack, immediately start a new one the next day. Do not wait any days between packs (this may take a little planning, since you will need a new pack on hand). The first 21 tablets contain the active ingredients. The last seven tablets contain no active ingredients. During this last week, your body gets a little break from the hormones, allowing you to have a period. Sometimes, you may have breakthrough bleeding or spotting between periods. When this happens, keep taking Sronyx as usual.
Last reviewed by: Kristi Monson, PharmD
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