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Doctor insights on: How Long For Birth Control Shot To Be Effective

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How long does it take for birth control to be effective?

How long does it take for birth control to be effective?

Depends: It depends on which birth control method you're talking about. If you're talking about birth-control pills 7 to 14 days is reasonable. ...Read more

Dr. Jeff Livingston
2,404 doctors shared insights

Contraception (Definition)

Contraceptiion is a means of preventing conception (or fertilization). There are hormonal and non hormonal methods of preventing sperm and egg from meeting. Talk to your doctor or clinic about what options are best for you. There are short acting methods (condoms, pills, patch, ring) and long ...Read more


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How long does it take for oral birth control to be effective?

How long does it take for oral birth control to be effective?

Immediately if...: I usually recommend to pts to start their pill on day one of their cycle. If done this way, and it is truly your normal menses, the pill should protect you from pregnancy right away. ...Read more

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How long does it take for a birth control pill to be effective?

How long does it take for a birth control pill to be effective?

Effectiveness of BCP: It takes about 2 weeks for a bcp to be effective if you've started soon after your menses. Nevertheless, i advise my patients to use condoms the first month, and to rely on the bcp the second months. ...Read more

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How long after taking antibiotics does it take for birth control pills to be completely effective again?

A few days: This is not as common as people fear. If you are experiencing diarrhea or vomiting wile taking your antibiotics then this could effect the absorption of your birth control. ...Read more

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How long does the birth control pill take to be effective once you start?

How long does the birth control pill take to be effective once you start?

Depends: If you start the pill when you start your period, it is effective from the beginning. If you start the pill at any other time in your cycle, you should expect to be protected after taking the pill for 2 weeks. ...Read more

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How long after being on antibiotics would birth control be effective again?

How long after being on antibiotics would birth control be effective again?

At least seven days: At least 7 days after including the time you have been on the antibiotics, but one should not stop the bcp even when taking the antibiotics. ...Read more

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How long is it supposed to it take for birth control pills to be effective?

How long is it supposed to it take for birth control pills to be effective?

Immediately: Immediately if you start the first pill on the sunday following the beginning of your period. ...Read more

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How long do I have to take birth control for it to be effective to prevent against pregnancy? Does this go for every brand or birth control?

1 cycle: To be on the safe side you should be on birth control pills for 1 cycle before you can count it to prevent pregnancy. Don't forget that it's a good idea to continue using condoms always to prevent std's. ...Read more

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How long does it take for the birth control pill to become effective?

How long does it take for the birth control pill to become effective?

Use back up: Protection for the first month that you are taking oral contraceptives. ...Read more

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I just switched to nuvaring from oral combination birth control pills. How long will it take for the nuvaring to prevent pregnancy?

I just switched to nuvaring from oral combination birth control pills. How long will it take for the nuvaring to prevent pregnancy?

No waiting: If you switched straight from the pills to the ring without missing any active pills or being late starting the ring, there should be no waiting period. ...Read more

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How long does the birth control pill take to be effective? 3rd cycle?

How long does the birth control pill take to be effective? 3rd cycle?

Probably immediately: The pill is probably effective immediately...But i would recommend you use barrier contraception (condoms) until you finish the first three weeks of your starting pack just to be safe. ...Read more

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How long is it supposed to it take for microgestron birth control to start being effective?

Scientifically: Scientifically, it works after 4 doses, but i wouldnt trust that. Use back up protection for on full cycle. Then, you are 98 percent protected. So always remember, that nothing is a guarantee. If you want to have sex and have the lowest rate of pregnancy, add condoms as well. ...Read more

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How long after taking antibiotics does it take for your birth control to be effective again. Ik most vBulletin don't effect bc but I'm being safe?

How long after taking antibiotics does it take for your birth control to be effective again. Ik most vBulletin don't effect bc but I'm being safe?

Next package: To be completely safe, continue your pills and rely on them after the second week of the next package after you finish the antibiotics.As you know, this is probably being excessively cautious but it is a good idea to be using condoms any way to decrease the risk of STDs. Best wishes. ...Read more

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How long does it take for the birth control pill "generess fe" to be effective?

It depends: It depends on when in your cycle you started the pills. If you started on the first day of bleeding, it's effective right away. If later in your cycle, it typically takes 7 days to take effect, so use back up prior to then. It also may depend on when you last had sex, and what you used for protection. ...Read more

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How long does it take for the pill to be effective? Which birth control option works the quickest?

2 weeks: Most hormonal birth control (pills, patch, vaginal ring, Depo-Provera shot, Nexplanon arm insert) ... All generally take 2 weeks to be effective. The Mirena (levonorgestrel) iud is immediately effective. If you have recently started birth control but are worried about being pregnant call you doctor. ...Read more

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How long can a woman take tamsulosin? Will it have any effect on Depoprovera shot for birth control?

How long can a woman take tamsulosin? Will it have any effect on Depoprovera shot for birth control?

Tamsulosin: This medication will not affect Depoprovera. Then duration of use will depend on what problem it has been prescribed for. Contact the prescribing physician and clarify why it was given and the instructions for use. ...Read more

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How long do you have to be on birth control in order for it to be an effective contraceptive method?

How long do you have to be on birth control in order for it to be an effective contraceptive method?

One pack: If you start your pill on the day that your period starts, then it works immediately. If you do a sunday start, then it can take up to two weeks. ...Read more

Dr. Neigatha Graney
4 doctors shared insights

Birth Control (Definition)

Also known as contraception, birth control is a method to prevent pregnancy. Some methods of birth control include a vasectomy, tubal ligation, oral contraceptive pills, vaginal rings, hormone injections, condoms, diaphragms, sponges, ...Read more