What does ammonia smell like pregnancy

Medically Reviewed by Jabeen Begum, MD on December 02, 2021

Urine normally has a slight smell, but some unusual and strong smells may also be noticed. Odd smells along with feeling sick, pain, or bloody urine are a sign you should see your doctor. 

Urine is mostly waste products and water and normally has a mild smell and a light yellow color. If you have more waste than water in your urine, it can smell more strongly. 

In most cases, a strong smell isn’t a sign of disease. It’s usually from your diet and medications, or it means you need to drink more water. Certain urine smells can be a sign of some conditions, but your doctor might not consider that to be the case unless you have other symptoms.

Your food, vitamins, and medications are the most common cause of a bad urine smell.

Foods. Some foods have compounds that naturally have a strong odor and can make your urine smell. These include:

  • Asparagus
  • Coffee
  • Dried fruit
  • Honey
  • Alcohol
  • Fennel
  • Brussel sprouts
  • Garlic
  • Onion

Vitamins. B vitamins are water soluble, which means your body doesn’t store them, and whatever you don’t need is removed in your urine. B vitamins in your multivitamin are often the culprit of smelly urine.

Medications. Some medicines like antibiotics can make your urine stink. Some antibiotics are made from mold and can make your urine smell yeasty.

Drinking lots of water throughout the day can help with these smells and keep your urine clear.

One warning sign of diabetes or high blood sugar is urine that smells sweet or fruity. The sweetness comes from sugar in your urine and is a sign your body is trying to get rid of extra sugar in your blood. Some people say their pee smells like Cheerios, which might be a sweet smell that you should tell your doctor about. 

Fruity-smelling urine can be a sign of other diseases and complications.

Diabetic ketoacidosisKetoacidosis is a dangerous complication of diabetes that happens when ketones build up in your blood. It causes symptoms like fruity breath, sweet-smelling urine, excessive thirst, and tiredness.

Maple syrup urine disease. This rare, life-threatening genetic condition prevents the body from breaking down some amino acids. It affects babies and children. 

When these build up in your blood, a compound called a branched-chain alpha-keto acid shows up in your urine and makes it, along with your earwax, smell like maple syrup. The disease can cause other serious symptoms like seizures, sleepiness, irritability, and poor feeding.

Foods that convert to sulfur compounds in your body can make your urine smell rotten. This smell is commonly compared to rotten cabbage or rotten eggs and can come from eating asparagus, garlic, and onions. There are rare conditions that create a rotten smell, too.

Trimethylaminuria. In this condition, your body can’t break down a compound called trimethylamine. This chemical on its own smells like rotten eggs, rotting fish, or garbage. As trimethylamine collects in your body, your sweat, breath, and urine will smell rotten or fishy.

Tyrosinemia. There are 3 types of tyrosinemia, which cause problems breaking down the amino acid tyrosine. Byproducts build up and cause breath, sweat, and urine to smell like boiled cabbage.

Strong, ammonia-like urine is a sign that you’re a little dehydrated. Drinking more water can often help. Sometimes, ammonia is also a sign of:

Urinary tract infection. Also called a UTI, such an infection happens when you have bacteria in any part of your urinary system. It causes strong or sweet urine. Other UTI symptoms include:

Liver disease. A problem with your liver can make your skin and eyes yellow and your urine dark and smelly. It can also cause stomach pain, throwing up, and feeling sick. 

Kidney stones. Crystals made of waste products and minerals can build up in your kidneys and form hard stones, which can cause strong-smelling urine. You might also feel sick, have pain that comes and goes, and have bloody urine.

In most cases, a strong urine smell is caused by your food or is a sign that you need more fluids. If your urine smells sweet, you feel unwell, or you have other symptoms along with foul-smelling urine, though, talk to your doctor. Treatment for an unusual urine smell depends on the cause. 

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SOURCES:

Gail L. Nunlee-Bland, MD, chief of endocrinology and director, Diabetes Treatment Center, Howard University.

Amy Krambeck, MD, Michael O. Koch professor of urology, Indiana University School of Medicine.

Cleveland Clinic: “Urine Changes.”

Metabolites: “Quantitative Determination of Common Urinary Odorants and Their Glucuronide Conjugates in Human Urine.”

Indiana University Health: “Urine Trouble If You Eat Asparagus.”

UnityPoint Health: “What Causes Urine to Smell Bad?”

CPT: Pharmacometrics & Systems Pharmacology: “Crowdsourced Asparagus Urinary Odor Population Kinetics.”

BMJ: “Sniffing out significant ‘Pee values’: genome wide association of asparagus anosmia.”

Yale Medicine: “5 Ways You Could Pee Better.”

Family Practice: “Accuracy of urinary symptoms and urine microscopy in diagnosing urinary tract infection in women.”

CDC: “Urinary Tract Infection,” “Chlamydia: Treatment and Care.”

Kidney Health (Australia): “Fact Sheet: Kidney Stones.”

Leslie, S.W., Sajjad, H., Nazzal, L. “Renal Calculi (Cystinuria, Cystine Stones).” StatPearls Publishing, 2020.

Mayo Clinic: “Hyperglycemia in diabetes,” “Strong-smelling Urine Not Necessarily Cause for Concern.”

American Family Physician: “Urinalysis: “A Comprehensive Review.”

American Diabetes Association: “DKA (Ketoacidosis) & Ketones.”

Nutrition & Metabolism: “Branched-chain amino acids in health and disease: metabolism, alterations in blood plasma, and as supplements.”

National Organization for Rare Disorders: “Maple Syrup Urine Disease,” “Tyrosinemia Type 1,” “Trimethylaminuria.”  

MIT Medical: “Ask Lucy: Could it B-vitamins?”

Harvard Health Publishing: “Urine color and odor changes.”

Frontiers in Psychology: “Pregnancy and olfaction: a review.”

British Journal of General Practice: “A nose for trouble.”

Office on Women’s Health: “Douching.”

Urology Care Foundation: “What is a Bladder Fistula?”

So, I have been having a lot of discharge that has a cleaning prodcut/ammonia smell to it. My OB checked me and he said it doesn't look like an infection but swabbed it and is sending it out. If it was my fluid leaking would he find out that way? Is that how they check if it's fluid leaking?? What else could it be?

A vagina’s natural odor can vary from woman to woman, with most falling into the normal category of a mild musky to slightly sour smell. When your vagina smells like ammonia, it might seem alarming and it could mean that something is out of balance, but it’s generally nothing to worry about.

Keep reading to learn about potential causes if your vagina smells like ammonia and what you can do about it.

Causes

You Could Be Dehydrated

When the liver breaks down proteins it produces ammonia, which is then broken down into a less toxic substance called urea. From the liver, urea enters the bloodstream and flows through the kidneys where it is excreted from the body with a combination of water and other waste. It is therefore common for urine to emit a slight smell of ammonia. 

When you are dehydrated, however, urea is not as diluted as it should be, and as it is excreted it will instead emit a strong smell of ammonia, as well as being darker in color.

You may also feel thirsty, dizzy, or fatigued when dehydrated, but drinking more water will normally reduce the smell of ammonia, as well as the additional symptoms.   

Sweating 

Sweat is released from the body through two types of sweat glands. One of these are eccrine glands, which are found all over the body, and the second are apocrine glands, which are typically located in parts of the body with hair follicles, such as the underarms and groin.  

When sweat is released through the apocrine glands in the groin, it can blend with certain bacteria found around the genital area causing an ammonia-like smell.

Cleaning your intimate areas daily with warm water and unscented soap will help avoid the odor, as will wearing cotton underwear, which is more breathable than synthetic fabrics. Steer clear of tight jeans and shapewear too if you feel like sweating is causing your vagina to smell like ammonia. 

Bacterial Vaginosis Can Cause The Vagina to Smell Like Ammonia

Bacterial Vaginosis (BV) is an infection caused by the overgrowth of certain bacteria in the vagina, which in turn upsets the natural pH balance. Symptoms can include burning during urination, itching, a gray vaginal discharge, and an unpleasant odor that can smell like ammonia or fish.

Unprotected sex, douching, and even smoking are believed to increase the risk of BV infections, and despite antibiotic treatment over 50% of women experience a recurring infection within 12 months.

However, when taken in conjunction with antibiotics, supplements like Boric Acid Suppositoriesfrom Intimate Rose will prevent recurring infections. They are also designed to quickly soothe irritation and rebalance the vaginal microflora, which also eliminates the odor.   

Early Pregnancy

Many women experience their vagina smelling like ammonia in early pregnancy, which is commonly due to their heightened sense of smell picking up on the real odor of their urine. 

Other causes of the vagina smelling like ammonia during pregnancy can be down to dietary changes and food cravings. Some pregnancy food cravings like asparagus, Brussels sprouts, garlic, onion, foods high in protein and rich in vitamin B-6 can result in a strong smell of ammonia in urine.

Other causes of a smell of ammonia from the vagina in pregnancy could be a urinary tract infection (UTI) or Bacterial Vaginosis (BV), both of which could lead to miscarriage. So as a general rule, if you smell ammonia from your vagina during pregnancy, always check in with your doctor.  

Menopause 

Many post-menopausal women experience urinary incontinence due to a decrease in estrogen and a thinning of the vaginal wall, which can leave a lingering smell of ammonia due to small urine leakages. This decrease in estrogen can also alter the natural pH balance of the vagina, making it more susceptible to UTIs and BV, both of which can cause an ammonia smell.  

Wearing a protective panty liner can help soak up any urine leakages during this stage of life and strengthening the pelvic floor muscles will prevent or stop urinary incontinence issues. Adding a daily probiotic supplement such as the Flora Bloom Probiotics for Women from Intimate Rose will help rebalance the pH of the vagina and greatly lower the risk of infections like UTIs and BV.  

Conclusion

Many reasons for a vagina smelling like ammonia are nothing to worry about and can usually be eliminated with some simple hygienic or lifestyle changes. However, it is also important to consult with your doctor to rule out any bacterial or urinary tract infections if additional symptoms occur. 

If you are considering taking supplements to prevent recurring infections or to rebalance the pH of the vagina, speak with your doctor to ensure that they won’t react with any other medications you are taking.  

References 

National Center for Biotechnology Information – How Does The Liver Work - https://www.ncbi.nlm.nih.gov/books/NBK279393/

Cleveland Clinic – Why you Swear & What it Says About Your Health - https://health.clevelandclinic.org/why-we-sweat/

Medical News Today – Why Does Urine Smell Like Ammonia When Pregnant? - https://www.medicalnewstoday.com/articles/321340#causes

Mayo Clinic – Bacterial Vaginosis - https://www.mayoclinic.org/diseases-conditions/bacterial-vaginosis/symptoms-causes/syc-20352279

National Center for Biotechnology Information – Clinicians use of Intravaginal Boric Acid Maintenance Therapy for Recurrent Vulvovaginal Candidiasis and Bacterial Vaginosis -https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6878170/

Cleveland Clinic – Postmenopause - https://my.clevelandclinic.org/health/diseases/21837-postmenopause