Key Takeaways
-
Your body naturally houses over 30 trillion bacteria. You cannot clinically overdose on probiotics because your system simply excretes what it does not need.
-
Consuming massive doses of gut probiotics can cause mild digestive issues like gas and bloating in up to 10 per cent of new users.
-
These side effects are a normal sign of your microbiome rebalancing. They typically resolve on their own within one to three days.
-
Oral probiotics interact with your mouth bacteria. They rarely cause the digestive discomfort associated with high dose gut supplements.
Probiotics are live microorganisms that support your health. You can naturally boost your intake through your daily diet. If you are wondering what foods have probiotics in them, fermented items like kimchi and yoghurt are great choices. Your body already contains more than 30 trillion bacteria. Because of this massive baseline, it's incredibly difficult to take too many probiotics.
Taking an extra dose won't harm you. It just means you might be wasting your money. Your body will naturally pass any bacteria it cannot use.
Is It Possible to Overdose on Probiotics?
You cannot clinically overdose on probiotics. The World Gastroenterology Organisation states there's no universal upper limit for probiotic dosage. The right amount varies dramatically from person to person.
There are no strict government guidelines for daily probiotic limits in healthy adults. You should always follow the dosage instructions on your specific product. Taking ten times the recommended dose won't give you ten times the benefits. It will likely just upset your stomach.
Want to understand how these good bacteria work in your mouth? Read our guide on what are oral probiotics.
Side Effects of Taking Too Many Probiotics
What happens if you eat too many probiotics? You might experience a brief adjustment period. Your body needs time to process the sudden influx of new bacteria. Here are the most common side effects you might notice if you overdo it.
Bloating and Stomach Swelling
Bloating is the most common symptom. Your abdomen fills with excess gas as the new bacteria ferment food in your gut. This makes your stomach feel swollen and tender to the touch. This issue is not dangerous. People often ask, 'do probiotics help with bloating?' The answer is yes, but taking a massive dose of new strains can temporarily cause the exact same issue. You can fix it quickly by halving your daily dose until your body adjusts.
Excessive Gas
Introducing billions of new bacteria changes how your digestive system breaks down food. This rapid digestion produces extra gas. Our diets change daily. Foods that usually cause you no issues might trigger more gas when you first start a strong gut probiotic.
Mild Diarrhoea
Gas is sometimes accompanied by loose or watery stools. A sudden change in your gut flora can speed up your digestion. This symptom should only last for a day or two. You should call your doctor if you experience loose bowel movements for longer than 48 hours.
Headaches from Biogenic Amines
Certain strains of bacteria create biogenic amines during the fermentation process. These amines are common in aged cheese, wine, and fish. High levels of biogenic amines can trigger headaches in sensitive people. It takes extremely high levels of probiotic ingestion to cause this issue.
Gut Probiotics Versus Oral Probiotics
It helps to understand the difference between gut and oral supplements. Most reported side effects come from high dose gut capsules. These capsules release massive amounts of bacteria directly into your digestive tract.
Oral probiotics work differently. You dissolve them in your mouth. Specific strains like BLIS K12® and BLIS M18® colonise your mouth and throat, teeth and gums. They act as targeted oral microbiome probiotics that bypass the intense digestive breakdown process entirely. This means they almost never cause the gas, bloating, or diarrhoea associated with standard gut supplements.
Why Poor Quality Probiotics Cause Reactions
The supplement market is not strictly regulated. Many companies produce cheap products filled with dead strains or unnecessary artificial binders. These hidden fillers are usually what cause adverse reactions and stomach pain.
We are committed to providing you with the highest quality, scientifically backed strains. Upgrade your daily routine with our targeted collections:
-
Immunity Probiotics: Keep your natural defences strong and support a healthy mouth and throat.
-
Dental Probiotics: Support your teeth and gums and fresher breath.
FAQs
Can I take two probiotic pills a day?
Yes. You can take two pills if the product label advises it. Doubling up on a standard single dose won't harm you but it might cause temporary gas as your body adjusts.
How long do probiotic side effects last?
Most mild side effects last one to three days. Your digestive system just needs a short adjustment period to get used to the new bacterial balance.
What happens if I take a probiotic every day?
Daily use maintains a steady level of beneficial bacteria in your microbiome. It's completely safe and recommended for healthy adults to support ongoing immunity and digestion.
Should I stop taking probiotics if I feel bloated?
You don't need to stop completely. Just reduce your dose for a few days. This gives your body time to adapt without overwhelming your system.
Are oral probiotics safer than gut probiotics?
Both are very safe. Oral probiotics dissolve in the mouth and bypass the stomach. They are highly unlikely to cause the digestive upset sometimes linked to gut probiotics.
Can you take oral and gut probiotics at the same time?
Yes. They target entirely different areas of the body. Taking an oral probiotic for your throat won't interfere with a gut probiotic for your stomach.
