Types of birth control explained: what each method asks of you

You’ve probably had conversations with other women about their birth control. Maybe a friend swears by her IUD, or your sister quit the pill after three months, or someone at work swears she forgets the ring is even there. Each of them is trying to make the right call about their birth control options and how it fits their life. But their experiences don’t help you narrow down your own birth control options.

Birth control falls into six groups: long-acting reversible methods, short-acting hormonal methods, barrier methods, permanent sterilization, fertility awareness, and emergency contraception. Choosing the right birth control comes down to what each approach asks of you, and what you’re willing to adjust in your life. The effectiveness of each birth control option may still depend on you.

The main types of birth control, grouped by how they work

Every birth control method available in the United States prevents pregnancy in one of five ways:

• Long-acting reversible methods: a device placed in your body releases progestin or copper continuously. This includes hormonal IUD, copper IUD, and implants.
• Short-acting hormonal methods: a dose you take or wear suppresses ovulation and thickens cervical mucus. This includes the pill, patch, ring, and injections.
• Barrier methods: a physical or chemical block stops sperm from reaching an egg. This includes external and internal condoms, diaphragm, cervical cap, sponge, and spermicides.
• Permanent methods: surgery closes the path that sperm or eggs travel. This includes tubal ligation surgery and vasectomy.
• Timing and backup methods: you avoid sex on fertile days, or you act after unprotected sex. This includes fertility awareness, emergency contraception.

The CDC’s National Center for Health Statistics reports that 54.3% of females ages 15 to 49 used contraception in 2022 and 2023.

Birth control methods that work continuously ask nothing of you once they’re in place. Methods that work at the moment of sex need your decision every time. Each method has their own rate of effectiveness.

How effective is each type of birth control?

Different birth control methods range from from 0.05% to 28% failure in the first year. The implant, both IUDs, and sterilization all fail under 1% of the time. The pill, patch, and ring can fail at 9% of the time, the injection at 6%, and barrier methods from 12% to 28%.

But understanding the effectiveness of different birth control methods means understanding two very different types of usage. Perfect use means a method that is used exactly right every time while typical use refers to how people realistically use their birth control methods over a real year.

For the pill, failure rate for perfect use is at 0.3% and typical use is at 9%. The same pill and the same person can produce a thirty-fold difference in outcome based on how consistently she uses it. Methods you cannot forget to use have almost no gap between perfect and typical use.

These figures show the percentage of women who experience an unintended pregnancy during the first year of use.

Birth control method effectiveness is just one aspect to consider when choosing the right birth control method for you. The next thing to think about is whether you want your birth control method to affect your hormone levels.

Hormonal vs non-hormonal birth control: how each prevents pregnancy

Effectiveness numbers tell you how likely a birth control method is to fail. They don’t tell you how it works inside your body. That matters if you have conditions that rule certain hormones out.

How hormonal methods prevent pregnancy

Hormonal birth control uses a synthetic combination of estrogen and progestin, or just progestin alone. Combined methods, meaning the pill, patch, and ring, typically stop your ovulation so no egg is released.

Progestin-only methods such as the hormonal IUD and the mini-pill mainly thicken your cervical mucus so sperm cannot get through, whereas the implant and injection’s primary mechanism of action is through ovulation suppression.

These methods work on your reproductive cycle and change it. You may experience lighter periods, spotting, or no period at all. These are common and expected side effects of hormonal birth control. If you suspect that your cycle has changed, read more on our guide on signs of an abnormal period.

How non-hormonal methods prevent pregnancy

Non-hormonal birth control options block or disable sperm and leave your cycle as is. Condoms create a physical barrier. Diaphragms and caps cover the cervix. Spermicide stops sperm from moving. All of these act during the moment of sex.

The copper IUD works continuously without hormones. It releases copper ions that make the uterus inhospitable to sperm. According to the FDA, a copper IUD can stay in place for up to 10 years.

Fertility awareness prevents pregnancy by tracking your cycle to avoid sex on fertile days. The CDC puts its typical-use failure rate at 24%.

Preventing pregnancy without estrogen

Some people need a birth control method without estrogen for medical reasons. The CDC’s US Medical Eligibility Criteria for Contraceptive Use rates combined hormonal methods as category 4 for several common conditions.

Category 4 means an unacceptable health risk. Progestin-only methods and the copper IUD often carry category 1 or 2 for the same conditions.

Category 1 refers to a birth control method with no restriction, 2 means that the benefits generally outweigh risks, and 4 means an unacceptable health risk.

Mention any of those conditions to your appointment with a medical provider before you state your preferred birth control method. Providers can rule birth control methods in or out fast.

If you don’t have any of these conditions, hormonal birth control methods all come down to your preference. The next thing for you to consider is how often you want to think about your birth control. If the answer is “hardly ever,” the long-acting methods come first.

IUDs and the implant are the most effective reversible methods

If you want a method you can mostly forget, long-acting reversible contraception may be the best fit for you. All three options fail less than 1% of the time in typical use, and nothing else reversible comes close.

Placement is the one thing it demands, and it happens in person. Circle Medical doesn’t perform in-clinic birth control procedures, including implant insertion and removal or IUD insertion and removal. Our providers can help you choose the right method and refer you to an OB-GYN or another specialist if you require placement.

Hormonal IUD: 0.2% failure for up to 8 years

A hormonal IUD is a small device placed in the uterus that releases progestin locally. The FDA lists an approved use of 8 years for the longest-lasting devices, and there are shorter devices on the market if you prefer that. Women on hormonal IUD report lighter periods, and some people stop bleeding altogether.

Placement takes a few minutes in a gynecologist’s office or clinic. The CDC recommends 7 days of backup birth control methods if the IUD is inserted more than 7 days after your period starts. Your fertility will return to normal after the IUD’s removal.

Copper IUD: 0.8% failure with no hormones

A copper IUD holds the lowest failure rate of any method that contains no hormones. It lasts up to 10 years, and the CDC puts perfect use at 0.6% against typical use at 0.8%. Periods can get heavier and crampier, particularly in the first several months. Some people find this trade-off worth it for the hormone-free protection.

It also works as emergency contraception. The CDC describes it as highly effective in that role. It can be inserted within 5 days of unprotected sex and then continue as ongoing birth control.

The implant: 0.05% failure, the lowest of any reversible method

The implant is a thin rod placed under the skin of the upper arm that releases progestin for up to 5 years. At 0.05% in both perfect and typical use, the CDC’s figures make it the most effective reversible method listed. Irregular bleeding is the most common reason people stop it.

Placement takes about a minute under local anesthesia, and removal is similar.

These three methods work because you don’t have to think about them outside of the initial insertion. If you prefer more control over your fertility timeline, short-acting hormonal methods give you exactly that.

Short-acting birth control methods: the pill, patch, ring and injection

These four methods let you start and stop your fertility cycle without an in-person procedure. They share the same CDC typical-use failure rate of 9%, apart from the injection at 6%. What separates them is the schedule.

The pill: taken every day

The CDC puts the pill at 0.3% perfect use against 9% typical use. That difference in effectiveness almost always comes down to missed doses. Combined pills contain estrogen and progestin. Progestin-only pills suit people who cannot take estrogen.

In July 2023, the FDA approved the first nonprescription daily oral contraceptive, a progestin-only pill now sold over the counter.

Timing rules are stricter for progestin-only pills. A provider can walk you through what a missed dose means for yours.

The patch: replaced once a week

The patch sticks to your skin and releases hormones through it. You replace it once a week for three weeks, then go patch-free for a week. Its effectiveness matches the pill at 9% typical use. This weekly rhythm works well for people who struggle with daily habits. You can apply it yourself.

The ring: replaced once a month

The ring is a flexible ring you place in the vagina yourself and wear for three weeks at a time. It releases the same class of hormones as the pill and patch, with the same 9% typical-use figure. You control it yourself, and you only have to think about it once a month. You insert and remove it on your own.

The injection: taken every 13 weeks

The injection is a progestin shot given every 13 weeks, and the CDC puts typical use at 6%. It asks the least of the four short-acting methods, but it also gives you the least control. Returning to fertility can take longer on the progestin shot. FDA labeling reports a median of 10 months to conception.

If this is something that concerns you, raise it at your appointment instead of after your first shot.

Nearly all birth control methods covered so far need a prescription or a procedure. If you want something you can pick up today without either, the over-the-counter options are the next thing to consider.

Condoms, diaphragms and over-the-counter birth control options

If you want something you can pick up today without a prescription, barrier methods and over-the-counter options are the place to start. They ask the most of you and give the most immediate access in return. Typical-use failure runs from 12% for the diaphragm and sponge up to 28% for spermicide, since each depends on correct use every time.

Condoms are the only method that reduces STI risk

Only condoms can reduce the transmission of sexually transmitted infections. Hormonal methods, IUDs and sterilization offer no STI protection at all.

Per the FDA, consistent and correct use of external condoms reduces the risk of some STIs. Internal condoms do the same in the vagina. Many people use condoms alongside another birth control method for this reason.

Diaphragms and caps cover the cervix and need a fitting

A diaphragm is a shallow dome you insert before sex and use with spermicide. A cervical cap works the same way in a smaller form, and both stay in for hours afterward. The CDC puts the diaphragm at 6% perfect use against 12% typical use.

Both need a prescription and a fitting. The sponge covers similar ground without either.

What you can buy without a prescription

Per the FDA, external condoms, internal condoms, the sponge and most spermicides are sold without a prescription. One emergency contraceptive pill and one daily progestin-only pill are now available over the counter as well. That means you can start these methods the same day you buy them.

Emergency contraception covers the gap between methods

The CDC advises taking an emergency contraceptive pill as soon as possible within 5 days of unprotected sex. One prescription option can work better than the over-the-counter one between days 3 and 5. A copper IUD can also be placed in that window.

Emergency contraception is for backup. Make sure to use a regular birth control method for ongoing protection.

Permanent birth control: what sterilization involves

At the far end of the spectrum from daily decisions sit the two permanent options. Sterilization closes the path sperm or eggs travel, and it should be treated as a final course of action.

The CDC lists tubal ligation at 0.5% typical-use failure and vasectomy at 0.15%.

A vasectomy is the simpler of the two. A provider cuts or blocks the tubes that carry sperm, usually under local anesthesia in an outpatient setting. It typically needs a follow-up semen test weeks later, since sperm can remain in the system even after the procedure.

Tubal ligation, cuts or removes the fallopian tubes, usually under general anesthesia and with a longer recovery. Reversal is sometimes attempted but rarely dependable, so assume that your decision to sterilize is final as well.

Now that every category is on the table, the question becomes how to narrow your options down to the two or three birth control methods you want to discuss at your appointment with a medical provider.

How to choose the right birth control for you

Every birth control method asks something different of you. Choosing well means deciding which demands you can meet, then checking that answer against your own medical history.

Questions to ask yourself

Work through these before your appointment. They can narrow your options to two or three.

1. How much effectiveness do you need? A 9% typical-use failure rate reads differently if a pregnancy right now would be welcome instead of difficult.
2. How often do you want to think about it? Daily, weekly, monthly, quarterly, once every few years, or once ever.
3. Do you want hormones? Some people prefer to avoid them. Others have a condition that makes estrogen unsafe.
4. When do you want to be able to get pregnant? Most reversible methods stop working when you stop them, though the injection can take longer.
5. Do you need STI protection? If yes, condoms belong in your plan regardless of what else you choose.
6. How much side-effect uncertainty can you tolerate? Bleeding changes, mood effects and changes in libido vary by person.
7. Are you open to an in-person visit elsewhere? IUDs and the implant require placement by an OB-GYN or specialist, which Circle Medical can refer you to. Everything else can typically start from a video visit with us.
8. What will your plan cover? Coverage varies by plan and by method, so check the insurance plans we accept and confirm your benefits.
9. Are children completely off the table for you? A more permanent option such as tubal ligation or vasectomy for your partner may be worth considering.

An expensive mistake many people make is choosing birth control on effectiveness alone, then stopping within months because the schedule never fits their life.

How soon each birth control method starts working

Timing belongs in the decision too, per the CDC’s 2024 Selected Practice Recommendations.

What a provider will ask you

A contraception appointment usually starts with your medical history before your preference. Expect questions about your blood pressure, your migraine history, and whether you get aura during migraines. A provider will also ask about blood clots, smoking, your age, breastfeeding, and what your periods are like now.

Your answers set the boundaries, and your preferences pick from what’s left. A provider can then assess whether a method you’re drawn to is a safe fit, and suggest the closest alternative if it isn’t.

Common questions about types of birth control

What is the most effective form of birth control?

The contraceptive implant carries the lowest failure rate of any reversible method, at 0.05% in both perfect and typical use per CDC figures. Vasectomy follows at 0.15% and the hormonal IUD at 0.2%. Sterilization ranks high because it cannot be used incorrectly. The trade-off is permanence.

What are the top 3 birth control methods?

By typical-use effectiveness, the three strongest are the implant at 0.05%, the hormonal IUD at 0.2% and the copper IUD at 0.8%. By popularity the picture looks different. NCHS data for 2022 and 2023 shows female sterilization at 11.5%, the pill at 11.4% and long-acting reversible methods at 10.5%.

Which birth control method has the least side effects?

Non-hormonal methods avoid hormonal side effects entirely. The copper IUD, condoms and diaphragms are the usual answer. The copper IUD can make periods heavier and more painful, though, so no method is free of trade-offs. Among hormonal methods, side effects vary by person. There is no reliable ranking.

Can you switch birth control methods?

Yes, and switching is common. Most transitions can happen without a gap in protection if they’re timed correctly. The CDC publishes guidance on when backup is needed. Talk to a provider before you stop your current method. Stopping first leaves you unprotected.

How soon does birth control start working?

It depends on the method and on where you are in your cycle. A copper IUD works immediately. Most other prescription methods need 7 days of backup unless you start them in a narrow early window. Some progestin-only pills need only 2. Barrier methods work from first correct use.

Does birth control protect against STIs?

Only condoms reduce STI risk. External and internal condoms reduce the risk of some sexually transmitted infections when used consistently and correctly, according to the FDA. Hormonal methods, IUDs, sterilization and fertility awareness offer no STI protection at all. Many people pair a condom with a more effective method for this reason.

What birth control can I use if I cannot take estrogen?

Estrogen-free options include the copper IUD, the hormonal IUD, the implant, the injection and progestin-only pills. The CDC’s US Medical Eligibility Criteria rates most as category 1 or 2 where combined methods are category 4. That includes migraine with aura, a clotting history, and smoking at 35 or older.

How long does it take to get pregnant after stopping birth control?

For most reversible methods, fertility can return quickly once you stop. The injection is the exception. FDA labeling reports a median of 10 months to conception after the last injection, with a range of 4 to 31 months. ACOG states that infertility is no more likely after an IUD than after any other reversible method.

Book a birth control consultation today

If you’re ready to move from reading to deciding, the next step is having a conversation with a medical provider.

Have a list of two or three of your preferred birth control methods to the appointment instead of a single answer. A provider can tell you which are safe given your blood pressure, your migraine history, and your plans for the next few years. That conversation moves faster when you’ve already decided how much attention you’re willing to give this.

A few symptoms need same-day attention while you’re using hormonal contraception or after an IUD placement. Seek care promptly for severe leg pain or swelling, chest pain, shortness of breath, a sudden severe headache, vision changes, or severe abdominal pain.