Can Plan B Cause Yeast Infection?

Nov 8


Jane Scaplen

Jane Scaplen

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In this blog post, we’ll explore the connection between Plan B and yeast infections, discuss factors that may increase your risk, and provide guidance on prevention, treatment, and alternative birth control options. Let’s dive in and answer the question: can Plan B cause yeast infection?


Did you know that taking Plan B,Can Plan B Cause Yeast Infection? Articles a popular emergency contraceptive, could potentially increase your risk of developing a yeast infection? While the two may seem unrelated, the hormonal changes triggered by Plan B can create an environment conducive to yeast overgrowth.

Key Takeaways

  • Plan B can indirectly increase the risk of yeast infection due to its impact on hormonal balance.
  • Self-care measures and medical treatments are recommended for preventing and treating post-Plan B yeast infections, including good hygiene, wearing breathable underwear, consuming probiotics and reducing sugar intake.
  • Non-hormonal or low dose hormone birth control options such as condoms and progestin only pills may help reduce the risk of a yeast infection after taking Plan B.

Can Plan B Cause Yeast Infection: Exploring the Connection

Plan B may not directly cause yeast infections, its impact on your hormonal balance can increase the risk of yeast overgrowth, leading to an infection. Plan B, an emergency contraception option, is taken to prevent pregnancy following unprotected sexual intercourse.

Like many birth control pills, Plan B contains estrogen. The hormonal changes it triggers can affect birth control by fostering a favorable environment for yeast growth, leading to infection.

How Plan B Works

By inhibiting ovulation and fertilization, Plan B reduces the likelihood of pregnancy following unprotected sex. The primary active ingredient in Plan B is Levonorgestrel, a synthetic hormone also found in multiple birth control pills. This hormone prevents the release of an egg from the ovary, reducing the chances of fertilization and pregnancy.

The Role of Hormones in Yeast Infections

The hormonal imbalances triggered by Plan B can promote yeast overgrowth, thereby raising the risk of infection. Birth control pills containing estrogen and progestin also present some risk of yeast infections.

Women are more prone to developing vaginal infections, including yeast infections, in the seven days just preceding their period. This highlights the role hormones play in the development and severity of yeast infections.

Factors That Increase Yeast Infection Risk After Taking Plan B

In addition more yeast infections due to Plan B induced hormonal changes, factors such as antibiotic use and a weakened immune system can amplify the risk of yeast infection. Antibiotics can disrupt the balance of good and bad bacteria in your body, leading to an overgrowth of yeast and, consequently, an infection. Similarly, a weakened immune system can make it harder for your body to fight off infections, which may be exacerbated by the hormonal changes caused by Plan B.

Antibiotics and Plan B

Simultaneous use of antibiotics and Plan B can disturb the equilibrium of beneficial and harmful bacteria in your body, heightening the chance of yeast infections. Certain antibiotics, such as fluconazole and griseofulvin, have been linked to an increased risk of yeast infections when taken with Plan B.

Clinical evidence suggests that antibiotics may lead to an overgrowth of yeast due to the disruption of the natural balance of bacteria in the vagina. However, only certain types of antibiotics may interact with hormonal contraception and reduce its efficacy, while the majority do not have this effect.

Immune System and Yeast Infections

A weakened immune system, which can be caused by certain medications, chronic medical conditions, and diseases, can reduce your body’s ability to combat yeast overgrowth. This diminished ability to fight most yeast infections can be further complicated by the hormonal changes caused by Plan B.

Maintaining a healthy lifestyle, which includes a balanced diet, regular exercise, and sufficient sleep, is key to preventing and treating yeast infections after taking Plan B. Additionally, proper hygiene and good vaginal health are crucial to prevent future infections.

Symptoms and Diagnosis of Yeast Infection Post-Plan B

Appropriate diagnosis and treatment hinge on the recognition of yeast infection symptoms after taking Plan B. Common symptoms include vaginal itching, burning, and unusual discharge, which may be mistaken for side effects of Plan B. In case of suspected yeast infection post-Plan B, a consultation with a healthcare professional is vital for accurate diagnosis and appropriate treatment thereafter.

Common Symptoms

Common symptoms of a yeast infection after taking Plan B include itching, burning, and unusual discharge. These symptoms may be similar to the side effects of Plan B, such as tender breasts, dizziness, headache, and vomiting. However, if itching is present, it is more likely to be a yeast infection than a side effect of Plan B.

The severity and type of yeast infection symptoms may be affected by individual hormone levels, with some women experiencing more intense symptoms, such recurrent infections such as:

  • extensive redness
  • swelling
  • itching
  • tears
  • cracks
  • sores

Seeking Medical Advice

If you suspect a yeast infection after taking Plan B, it is crucial to consult a healthcare professional for proper diagnosis and treatment. To diagnose a yeast infection, a healthcare provider will generally conduct a physical examination and may recommend tests, such as a vaginal swab or blood test, to verify the presence of a yeast infection.

It is important to seek medical attention upon the first occurrence of symptoms associated with a yeast infection, as prompt medical attention is essential for accurate diagnosis and effective treatment.

Preventing and Treating Yeast Infections After Plan B

Preventing and treating yeast infections after taking Plan B involves a combination of self-care measures and medical treatments. Self-care measures to treat yeast infections include maintaining good hygiene, wearing breathable underwear, and avoiding irritants that can worsen symptoms.

Medical treatments for recurrent yeast infections include over-the-counter antifungal creams and prescription antifungal medications like fluconazole.

Self-Care Measures

Maintaining good genital hygiene, such as keeping the vaginal area clean and wiping from front to back post-toilet use, is crucial in preventing and treating vaginal yeast infection post-Plan B. Wearing breathable underwear, such as cotton, allows for better air circulation and helps to keep the vaginal area dry, reducing the risk of yeast infections.

Additionally, consuming probiotics and decreasing sugar intake may be beneficial in avoiding fungal or yeast infections.

Medical Treatments

Over-the-counter antifungal creams and prescribed medications like fluconazole constitute medical treatments for yeast infections post-Plan B. Some examples of over-the-counter antifungal creams and oral medication that are effective for treating yeast infections include:

  • Monistat 1-Day Yeast Infection Treatment
  • Clotrimazole (Lotrimin and Mycelex)
  • Miconazole (Micatin and Monistat)
  • Tioconazole (Vagistat-1)
  • Terbinafine cream

However, it is important to consult with a healthcare provider if symptoms persist or worsen, as they may recommend prescription medications or additional treatments.

Alternative Birth Control Options to Minimize Yeast Infection Risk

For reducing yeast infection risk, considering alternative birth control options that don’t disrupt hormonal balance may be beneficial. Non-hormonal birth control methods, such as condoms and copper IUDs, have a lower risk of causing yeast infections.

Low-dose hormonal birth control methods, like progestin-only pills, may also be less likely to lead to yeast infections than higher-dose options.

Non-Hormonal Birth Control

Non-hormonal birth control choices such as condoms and copper IUDs don’t disrupt your body’s natural hormonal balance, thereby lowering the risk of yeast infections. Condoms have an efficacy rate of approximately 98% when used correctly and consistently, providing effective protection against both pregnancy and sexually transmitted infections.

Copper IUDs, such as Paragard, function by releasing copper into the uterus, inhibiting sperm from fertilizing an egg, without the use of hormones. However, it is essential to discuss potential side effects with a healthcare provider before selecting a copper IUD as a birth control method.

Low-Dose Hormonal Options

Low-dose hormonal birth control options, such as the birth control pill, employ reduced hormone quantities to avert pregnancy. These options, which include progestin-only pills, work by disrupting the body’s natural hormonal balance and inhibiting the production of hormones from the pituitary gland that would normally trigger ovulation. By taking hormonal types of birth control, such as low-dose pills, you can achieve a high level of effectiveness in preventing unplanned pregnancy, with a typical use effectiveness rate of 92%.

However, they may result in more breakthrough bleeding or spotting and menstrual bleeding between periods when compared to higher-dose pills.


In summary, while Plan B does not directly cause yeast infections, the hormonal changes it triggers can increase the risk of yeast overgrowth, leading to infection. It is essential to recognize the symptoms of a yeast infection after taking Plan B and seek medical advice for proper diagnosis and treatment. Practicing good hygiene, opting for alternative birth control methods, and considering medical treatments can help minimize the risk of yeast infections. Stay informed and take charge of your reproductive health!

Frequently Asked Questions

Why did Plan B give me a yeast infection?

Taking Plan B, a type of hormonal birth control, can disrupt your body's natural hormonal balance and cause an overgrowth of yeast, leading to a yeast infection.

Can the morning pill cause yeast infection?

Hormonal birth control has not been conclusively linked to yeast infections, but it can change the pH balance of the vagina and make women more prone to overgrowth of yeast or BV, both of which can cause irritation and itching.

Can Plan B make you itchy down there?

Itching and rash can be side effects of taking Plan B, so if you experience these symptoms it is important to seek medical advice.

How long do the side effects of plan b last?

Plan B One-Step (levonorgestrel) can prevent pregnancy after birth control failure or unprotected sex. Its mild side effects usually last for 24 hours.

How can I prevent yeast infections after taking Plan B?

To prevent yeast infections after taking Plan B, practice good hygiene, wear breathable underwear, and consider antifungal creams or prescription medications.