What can kill the good bacteria?

Probiotics are live microorganisms that can support health when taken in adequate amounts.

They are found in some fermented foods and in supplements, but not every product with live microbes has the same proven benefits.

That is why how you take your probiotic matters almost as much as which one you buy. [1][2]

Here is the simple truth. Most foods do not instantly “kill” your probiotic the second it enters your mouth. But some foods and drinks make it harder for the good bacteria to survive the trip through your digestive system. If you want your probiotic to work as well as possible, it helps to avoid those pairings. [1][3]

1. Very hot drinks and very hot food

One of the easiest ways to protect your probiotic is to avoid taking it with anything too hot. Since probiotics are live bacteria or yeasts, very high heat is not ideal for them. 

A better way to think about it is this:

• Very hot drinks and foods can make it harder for probiotics to survive [3]
• Piping hot coffee, boiled tea, and steaming soup are not ideal choices
• Room temperature water is a much safer option
• Warm food is fine, but it should not be extremely hot
• If you are using a probiotic powder, let hot food cool down before mixing it in [3]

Research on commercial probiotics suggests that what you take them with can affect how well they survive digestion, and heat is one of the common things manufacturers warn about. [3]

2. Alcohol

Alcohol is another pairing worth avoiding. Research shows that the food or drink taken with probiotics can affect how well they make it through digestion, and alcohol may work against them. [3]

A simpler way to look at it:

• Do not wash probiotics down with beer, wine, or cocktails
• Alcohol can make survival harder for live probiotic bacteria [3]
• One drink does not cancel every benefit of your probiotic

3. Acidic drinks like orange juice

Juice may seem like a healthy drink, but it is not always the best partner for probiotics. Acidic drinks such as orange juice can make it harder for some probiotic bacteria to survive digestion.

Research found that:

• Probiotic survival was higher with porridge than with juice
• Around 91.8% survived with porridge, compared with 79.0% with juice [3]
• Milk and oatmeal with milk also supported better survival than apple juice or spring water [4]
• Orange juice and other acidic drinks are not necessarily harmful, but they may be less protective
• Water, milk, porridge, or a light meal may be better choices

You do not need to stop drinking juice. Just avoid using it to take your probiotic when a gentler option is available. [3][4]

4. Antibiotics

Antibiotics can affect many bacterial probiotics because they are designed to kill or slow the growth of bacteria. According to ISAPP, most bacterial probiotics are sensitive to at least some antibiotics, which is why taking both at the exact same time may reduce probiotic survival. [5]

Here’s what to remember:

• Antibiotics can affect the live bacteria in probiotic supplements
• A gap of around 2 hours or more between them may be a sensible approach [5]
  
• Yeast-based probiotics, such as Saccharomyces, are not affected in the same way [5]
• Follow the instructions from your doctor, pharmacist, or product label

Spacing antibiotics and probiotics apart gives bacterial probiotics a better chance to survive and do their job. [5]

Research suggests choosing a mild meal or light snack that may help protect probiotic bacteria during digestion. [3][4]

Good options include:

• Porridge
• Oatmeal with milk
• Milk, if suitable for the product
• A light meal or snack
• Room temperature water

Always follow the product label, as timing and serving instructions can vary.

How should you take probiotics?

Check the product label first, as storage and timing instructions can vary between probiotics. Some products need refrigeration, while others can be kept at room temperature. Look for products that guarantee the listed CFU count through the end of their shelf life. [1]

Key points:

• Follow the storage instructions on the label
• Take the probiotic with a meal or shortly before one, when recommended [3][4]
• Use room temperature water
• Keep a 2-hour gap from antibiotics for most bacterial probiotics [5]
• Take it consistently for the best routine

FAQ

1. Can I take probiotics with coffee?

You can, but not when the coffee is super-hot. Probiotics are live bacteria, so boiling hot drinks are not exactly a friendly welcome. Safer move: take them with room temperature water, then enjoy your coffee after.

2. Is orange juice a bad idea?

Not the end of the world, but not the best partner either. Acidic drinks like orange juice can make it tougher for the good bacteria to survive, so water or a light meal is usually a better pick.

3. Can alcohol cancel out my probiotic?

Not in one dramatic movie scene kind of way, but alcohol and probiotics are not a great combo. If you are taking probiotics, try not to wash them down with wine, beer, or cocktails. Give them their own moment.

4. Should I take probiotics with food or on an empty stomach?

Usually with food or a little before a meal works well. Think of food as giving the probiotics a smoother ride through your stomach.

5. What is the easiest way to take probiotics properly?

Keep it simple. Take them with room temperature water or with a light meal, avoid very hot drinks, skip taking them with alcohol, and be consistent. Your gut likes routines more than random chaos.

References

[1] National Institutes of Health, Office of Dietary Supplements. Probiotics Fact Sheet for Health Professionals.

[2] National Center for Complementary and Integrative Health. Probiotics: Usefulness and Safety.

[3] Treven P, Paveljšek D, Bogovič Matijašić B, Mohar Lorbeg P. The Effect of Food Matrix Taken with Probiotics on the Survival of Commercial Probiotics in Simulation of Gastrointestinal Digestion. Foods. 2024.

[4] Tompkins TA, Mainville I, Arcand Y. The Impact of Meals on a Probiotic During Transit Through a Model of the Human Upper Gastrointestinal Tract. 2011.

[5] International Scientific Association for Probiotics and Prebiotics. Probiotic Use Alongside Antibiotics: A Guide to Clinical FAQs. 2024.