How to Start Taking Slynd (Drospirenone 4 mg)
Start Slynd on the first day of your menstrual period (Day 1 Start), take one white active tablet daily at the same time for 24 days, followed by one green inactive tablet daily for 4 days, then immediately begin a new pack. 1
Starting Slynd When Not Currently Using Hormonal Contraception
Begin the first white active tablet on Day 1 of your natural menstrual period. This is the only recommended starting method for Slynd. 1
No backup contraception is needed when starting on Day 1 of menses, as immediate contraceptive protection begins. 2, 1
Take one white active tablet daily at the same time each day for 24 consecutive days, followed by one green inactive tablet daily for 4 days. 1
After completing all 28 tablets (24 white + 4 green), start the next pack immediately the following day, on the same day of the week as your first pack, regardless of whether bleeding has occurred. 1
Switching to Slynd from Other Contraceptive Methods
When switching from another contraceptive method, timing varies by method type:
From combined oral contraceptives (COCs): Start Slynd on the day you would have started the next pack of your previous pill. 1
From vaginal ring or transdermal patch: Start Slynd on the day you would have inserted the next ring or applied the next patch. 1
From progestin-only methods (implant or injection): Start Slynd on the day of implant removal or on the day your next injection would have been due. 1
From intrauterine device (IUD) or intrauterine system (IUS): Start Slynd on the day of removal. 1
Key Differences from Traditional Progestin-Only Pills
Slynd has a more forgiving missed-pill window than traditional progestin-only pills:
Traditional POPs require backup contraception if a pill is taken more than 3 hours late. 3
Slynd maintains ovulation inhibition even with scheduled 24-hour delays in pill intake, distinguishing it from traditional POPs that have stringent timing requirements. 4
The 24/4 regimen (24 active days + 4 inactive days) provides improved bleeding predictability compared to continuous progestin-only pills. 5, 6, 7
Practical Administration Details
Choose a consistent time of day to take your pill and maintain this schedule throughout treatment. 1
Both white (active) and green (inactive) tablets should be swallowed whole. 1
Use the day label strip provided with your blister pack: place it over the pack starting with the day your period began, so you can track which day to take each pill. 1
Your period should typically start during the 4 days you are taking green inactive pills. 1
Important Counseling Points
Spotting or light bleeding between periods is common when first starting Slynd and should resolve after a few months. 1
Nausea may occur, especially during the first few months, but typically resolves without stopping the medication. 1
If you miss pills (including starting a pack late), pregnancy risk increases. The more pills missed, the greater the risk. 1
If vomiting or diarrhea occurs within 3-4 hours of taking a pill, take the next scheduled pill (from the next day) within 12 hours if possible, and use backup contraception for 7 days if symptoms persist beyond one day. 1
Clinical Context and Efficacy
Slynd provides a Pearl Index of 0.73 (95% CI 0.31-1.43), demonstrating efficacy comparable to combined oral contraceptives. 6
This formulation is particularly valuable for women with contraindications to estrogen, as it does not increase venous thromboembolism risk. 5, 6, 7
The drospirenone 4 mg dose effectively inhibits ovulation while maintaining estradiol levels at early follicular phase concentrations, avoiding hypoestrogenism. 7, 8