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Boric acid works by preventing Candida fungi from growing. The acid is available as vaginal suppositories.
In this article, we look at the research behind boric acid as a treatment for yeast infections, its effectiveness, and possible risks.
Doctors may recommend using boric acid to treat yeast infections.
It is healthy to have small amounts of yeast on the skin and in areas of the mouth, throat, and vagina. Under some conditions — such as when the immune system is weak or when hormones change during pregnancy — the yeast may multiply and cause an infection.
The medical term for a yeast infection is candidiasis. Yeast infections are common and often occur in the vagina. They are frequently caused by Candida albicans (C. albicans) or Candida glabrata (C. glabrata ) fungi.
Boric acid is a white powder or crystalline solid that acts as a strong antiviral and antifungal agent in the body. Research suggests that boric acid restricts the growth of both C. albicans and C. glabrata. It interferes with the yeast’s natural life cycle, preventing it from growing to become infectious.
According to the Centers for Disease Control and Prevention (CDC), people should use boric acid as a secondary treatment, that is, if other antifungal drugs or ointments are unable to treat the yeast infection or if it recurs.
Boric acid may be able to treat infections that are resistant to first-line treatment. This is usually an antifungal medication, which may involve a single oral dose of fluconazole or a topical antifungal cream. If these do not work, a doctor may recommend using boric acid or another treatment, such as nystatin or flucytosine.
A person can use a gelatin capsule as a vaginal suppository. The CDC recommend using capsules that each contain 600 mg of boric acid once a day for 2 weeks.
Boric acid medications are usually affordable. They are available for purchase over the counter at drug stores or online.
If symptoms persist after using boric acid, speak to a general practitioner or gynecologist.
What does the research say?
Research indicates that boric acid is effective in treating Candida infections, including cases that do not resolve with common antifungal medications. People with recurrent yeast infections may benefit most from boric acid treatment.
Authors of a 2011 medical review report that boric acid is a safe and economical option for people with recurrent or chronic vaginal infections, especially when conventional treatment is ineffective.
Risks and side effects
A growing body of evidence shows that, when a person uses the optimal concentration, boric acid has fewer side effects than standard ointments.
Some common side effects of boric acid use include:
- vaginal discomfort
- a mild burning sensation after inserting the capsule
- watery vaginal discharge
- hives, the medical name for which is urticaria
A person with any of the following should not use boric acid capsules:
- a fever
- vaginal bleeding
- pelvic inflammatory disease
- any sexually transmitted disease
- heart disease
- a blood vessel disorder
It is important to remember that boric acid is toxic. If a person uses it incorrectly, it can cause a fatal overdose, though this is rare.
Do not take boric acid orally or apply it to open wounds. Consult a doctor before using this medication while pregnant.
How to use boric acid
It is important to follow the instructions when using suppositories.
Boric acid vaginal suppositories are available for purchase. They are solid, oval-shaped capsules that a person inserts into the vagina. They become liquid as they warm up to the body’s temperature.
To treat a Candida infection, the CDC recommend using vaginal suppositories containing 600 mg of boric acid each. A person should use them once a day for 2 weeks.
Always follow the instructions on the medication’s label.
Before using a vaginal suppository, make sure the hands and vaginal area are clean and dry to prevent bacteria from entering the body.
To use a suppository, a person should:
- Fill the applicator and lie on the back with the knees bent or stand with one foot raised on a chair.
- Insert the applicator gently into the vagina.
- Press the plunger to release the capsule.
- Gently remove the applicator.
Some instructions recommend using a suppository before bed. This is because lying down will reduce the risk of medicine leaking out.
It is safe to use suppositories during menstruation. Use menstrual pads instead of tampons, because a tampon could absorb some of the medication.
Yeast infections are common in healthy adults. Researchers continue to look for treatments that have fewer side effects, better tolerability, and lower cost, while being highly effective.
A person can treat vaginal yeast infections with oral medicines, usually antifungals. These require a prescription. Other medications are available over the counter.
Boric acid is a common alternative treatment that doctors recommend if first-line treatment has not worked or if the infection recurs.
People with recurring vaginal yeast infections may benefit from using boric acid capsules. A doctor can advise about the best dosage and how long to use the medication.
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Can coconut oil treat a yeast infection?
Coconut oil is a fatty oil that comes from the white pulp of the coconut. Research suggests that it has antibacterial properties and could treat yeast infections. These common fungal infections can occur on the skin, in the mouth, or in the vagina. Here, we investigate the use of coconut oil to treat yeast infections.
How do you use vaginal suppositories?
People can use vaginal suppositories for reasons ranging from birth control to treatment for infection. Vaginal suppositories are simple to insert, as the step-by-step guide and tips in this article explain. We also look at the different types of vaginal suppositories, and when people may benefit from their use.
What to know about sex and yeast infections
While it is possible for a person to have sex when they have a yeast infection, it may cause pain and other bothersome symptoms. In addition, having sex may increase the amount of time the infection takes to heal. In some cases, a person can pass on the infection to their sexual partner. Learn more here.
How long does a yeast infection take to go away?
Vaginal yeast infections are common and the result of an imbalance of bacteria in the vagina. How long vaginal yeast infections last can vary, depending on their severity and what treatment is used. Learn more about what to expect and home remedies that may be worth trying to treat the infection and ease the symptoms.
What you need to know about a yeast infection
A fungal infection of the genitals can affect anyone. Caused by the yeast species Candida albicans, symptoms include itching, irritation, and burning. A yeast infection can be complicated or uncomplicated, and treatment depends on the type. Find out about diagnosis and how to reduce the risk of developing an infection.
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