Phasic pill to match your cycle

Outside the US? Find us where you live.
Prevent pregnancy with Tri-Previfem, an effective combination birth control pill that can help to regulate your periods and PMS symptoms too.
Get expert help choosing a phasic pill to match your cycle, and order Tri-Previfem online.
Tri-Previfem is a combination hormone medication that’s used to stop you from getting pregnant. It contains two different hormones: levonorgestrel and ethinyl estradiol. When used correctly it’s over 99% effective at preventing pregnancy.
It releases varying levels of hormones in the active birth control pills (also known as tri-phasic), meaning that this mimics your natural cycle more effectively. This phased dose can be better to control PMT symptoms that are usually associated with your period. Tri-Previfem comes in packs of 28 pills.
The hormones in Tri-Previfem work to stop your body from releasing an egg during ovulation, stop your womb lining from thickening so an egg can’t implant itself and it also makes your cervical fluid thicker so that sperm can’t get through. These all make pregnancy less likely.
It can also help to regulate your period and make them lighter, as well as helping with PMT symptoms.
Tri-Previfem doesn’t protect you or your partner from sexually transmitted diseases, it just reduces the risk of pregnancy. Barrier birth control methods like condoms are the only way to prevent sexually transmitted diseases, though these aren’t always 100% effective.
There are 28 pills in each pack of Tri-Previfem. This is split into 21 active birth control pills and 7 inactive pills. The inactive pills don’t give you a dose of hormones, so allow you to have your period during this time.
The active birth control pills contain levonorgestrel (0.18mg for the first phase, 0.215mg for the second and 0.25mg for the third) and ethinyl estradiol (0.035mg) to phase the delivery of hormones throughout the month. There are low hormone dose versions that work similarly called Tri-Lo-Sprintec and Tri-Lo-Estarylla. There’s also a version that gives you the same dose of hormones each month (known as mono-phasic) called Previfem.
How we source info.
When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.
How we source info.
When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.
Have something specific you want to know? Search our info below, or ask our experts a question if you can’t find what you’re looking for.
Registered with NPI (No. 1700446366)
Meet LaurenmarieRegistered with NPI (No. 1710957600)
Meet BruceRegistered with GMC (No. 4624794)
Meet DanielShipping, consultation, treatment. It’s all included in the price.
Quantity | Starting from |
---|---|
28 Tablets | $48.95 |
Quantity | Starting from |
---|---|
28 Pills | $43.95 |
56 Pills | $55.95 Save $31.95 |
84 Pills | $67.95 Save $63.90 |
168 Pills | $107.95 Save $155.75 |
336 Pills | $166.95 Save $360.45 |
Quantity | Starting from |
---|---|
84 Pills | $53.95 |
168 Pills | $74.95 Save $32.95 |
336 Pills | $116.95 Save $98.85 |
Quantity | Starting from |
---|---|
84 Pills | $55.95 |
168 Pills | $79.95 Save $31.95 |
336 Pills | $128.95 Save $94.85 |
Quantity | Starting from |
---|---|
28 Tablets | $39.95 |
Quantity | Starting from |
---|---|
21 Tablets | $49.95 |
Quantity | Starting from |
---|---|
21 Tablets | $49.95 |
Quantity | Starting from |
---|---|
168 Pills | $107.95 |
336 Pills | $176.95 Save $38.95 |
Quantity | Starting from |
---|---|
28 Pills | $48.95 |
56 Pills | $52.95 Save $44.95 |
84 Pills | $63.95 Save $82.90 |
168 Pills | $89.95 Save $203.75 |
336 Pills | $129.95 Save $457.45 |
Quantity | Starting from |
---|---|
28 Tablets | $45.95 |
Quantity | Starting from |
---|---|
84 Pills | $481.95 |
168 Pills | $912.95 Save $50.95 |
336 Pills | $1,777.95 Save $149.85 |
Quantity | Starting from |
---|---|
28 Pills | $185.95 |
56 Pills | $333.95 Save $37.95 |
Quantity | Starting from |
---|---|
28 Pills | $213.95 |
56 Pills | $389.95 Save $37.95 |
84 Pills | $566.95 Save $74.90 |
168 Pills | $1,082.95 Save $200.75 |
336 Pills | $2,117.95 Save $449.45 |
We know health, but you know you.
Our experts tell you what’s safe, but you decide what’s best.
Answer a few questions and tell us about yourself. Get tailored advice from our clinicians so you can choose better.
Choose your treatment and how often you have it delivered.
We know things change. It’s the nature of life. We’ll check in regularly to make sure your treatment is still right for you.
Pause. Change. Skip. Start again. Any time you like.
Fast delivery
Great
Our average rating based on 19536 reviews.
Combined Pills: Here are some other options.
Pill with a "regular" estrogen dose. Very similar to Isibloom and Viorele.
There's an iron supplement in the inactive pills. A lot like Loestrin Fe and Junel Fe.
The same active ingredients as Sprintec in a different pill.
The inactive pills contain an iron supplement. Similar to Loestrin Fe and Blisovi Fe.
Safest category pill that reduces heavy bleeding. Same hormone mix as Aviane and Lutera but a higher dose.
Similar to Estarylla. Can help to make your periods more regular.
Very similar to Lutera and Aviane, but cheaper.
The same active ingredients as Yaz but with a little more estrogen.
Like Yasmin but in a lower dose. 28 day pill you take without a break.
We're making healthcare more about you. Sign up to our newsletter for personalised health articles that make a difference.
Disclaimer: The information provided on this page is not a substitute for professional medical advice, diagnosis, or treatment. If you have any questions or concerns about your health, please talk to a doctor.
We couldn't find what you're looking for.
Here's everything we treat. Or, if you're looking for something we don't have yet, you can suggest something.
If there’s a particular treatment or condition you’re looking for, tell us and we’ll look into it for you.
Submit your question here, or tell us if you’ve found an issue on our site.
If you made a mistake on the gender selection, you can amend this by pressing 'Cancel' below and changing your gender. If you entered the correct gender but made a mistake on the treatment category selection, you can choose a different category by pressing 'Choose other treatment' below.
You have recently requested a change to your treatment plan which is under review.
We'll let you know once our clinician has reviewed your request.
Our clinician has already made treatment suggestions for you
You can view and select an option from your account.
You already have treatment for under review.
You have a consultation being reviewed. Our clinician will contact you soon.
You already have a treatment plan for on pause. You can restart or make changes to this from your account.
You can continue as a guest, or sign in with your Treated account if you have one.
By clicking 'Subscribe now' you're agreeing to our Privacy Policy.
You’re signed up to our newsletter. Keep an eye on your inbox for our latest update.
We’ll get back to you very soon. We aim to respond to all queries in one working day.
We couldn't verify your ID. Please upload a photo ID to continue with your order.
You have an order on hold because we couldn’t take your payment. To continue, please add a new payment method.