Julie is a legitimate emergency contraceptive that contains the same active ingredient, at the same dose, as Plan B One-Step. Both products use 1.5 mg of levonorgestrel in a single tablet, and Julie was approved through an Abbreviated New Drug Application (ANDA), the same FDA pathway used for generic medications. In practical terms, taking Julie is equivalent to taking Plan B.
How Julie Compares to Plan B
The core question most people have is whether Julie works as well as Plan B. The answer is yes. Julie contains levonorgestrel USP 1.5 mg, which is identical in ingredient, strength, and dosage form to Plan B One-Step. The ANDA approval pathway requires a product to demonstrate that it performs the same way in your body as the brand-name version. Julie is not a lesser product; it’s a direct equivalent.
The main differences are price and brand mission. Julie is typically sold at a lower price point than Plan B, making it more accessible. The company also runs a one-for-one donation program: every time someone buys a Julie, the company donates one to organizations serving people affected by health inequities, including sexual assault response programs, homeless shelters, domestic violence programs, student health centers, and community clinics.
How Effective It Is
Timing is everything with levonorgestrel emergency contraception. When taken immediately after unprotected sex, effectiveness can be as high as 91%. But that number drops fast. Taken one day later, effectiveness falls to about 61%. By day two, it’s around 28%, and by day three (72 hours), it’s roughly 19%. This steep decline is why every hour matters.
The World Health Organization notes that levonorgestrel pills can be taken up to 120 hours (five days) after unprotected sex, but effectiveness beyond 72 hours is low. A different type of emergency contraceptive pill, one that uses ulipristal acetate (sold as ella), works better in that 72-to-120-hour window. If more than two days have passed, that option or a copper IUD may be worth considering.
How It Works in Your Body
Julie works primarily by delaying or preventing ovulation. If your body hasn’t released an egg yet, the levonorgestrel in Julie can pause that process long enough for sperm to die off (sperm survive about five days in the reproductive tract). It does not end a pregnancy that has already started. If a fertilized egg has already implanted, Julie will not affect it.
This is why timing relative to your cycle matters so much. If you’ve already ovulated, the pill has far less to work with. There’s no reliable way to know exactly when you ovulated, though, which is why taking it as soon as possible gives you the best odds.
Weight and Effectiveness
Body weight can reduce how well levonorgestrel emergency contraception works. The Faculty of Sexual and Reproductive Healthcare in the UK recommends considering a double dose (two 1.5 mg tablets) for people weighing over 154 pounds (70 kg) or with a BMI above 26. The American Society for Emergency Contraception suggests a double dose may improve effectiveness for those with a BMI over 30.
If you’re in a higher weight range, ulipristal acetate or a copper IUD tends to be more reliable. A copper IUD is the most effective form of emergency contraception at any weight and can be placed up to five days after unprotected sex.
Side Effects to Expect
Julie’s side effects are the same as any levonorgestrel emergency contraceptive. The most common ones are nausea, lower abdominal pain, tiredness, headache, dizziness, and breast tenderness. These typically resolve within a day or two.
Your next period may also be affected. It could come earlier or later than expected, and the flow might be heavier or lighter than usual. This is normal and not a sign that anything went wrong. If your period is more than a week late, a pregnancy test is a reasonable next step.
Tips for Taking It
Julie is a single tablet taken by mouth. No prescription is needed, and there are no age restrictions for purchasing it. You can take it with or without food, though taking it with a small snack may help if you’re prone to nausea.
If you vomit within two hours of taking the pill, it may not have been fully absorbed, and you may need another dose. Beyond that two-hour window, the medication has generally entered your system.
Julie is meant for occasional use, not as a regular form of birth control. It’s less effective than consistent contraception like an IUD, implant, or daily pill, and repeated use within the same cycle can disrupt your period significantly.