Gut Health

Probiotics and Prebiotics Explained: A Simple Guide to Gut Health

Written by Star Discount Chemist Team | Feb 25, 2026 3:31:55 AM

Standing in the pharmacy aisle looking at rows of “gut health” supplements can feel overwhelming. With probiotics, prebiotics and talk of the “microbiome” everywhere, it’s not always clear what your body actually needs.

Your gut does more than digest food. It also contains trillions of microorganisms- known as your gut microbiome, which may play a role in digestive health and overall wellbeing.

So how do you support your gut, and when might a supplement be helpful? Here’s what you need to know.

Signs Your Gut May Need Support

It’s normal to experience occasional digestive discomfort. But if symptoms happen regularly, your gut may need some extra attention.

Common signs include:

  • Bloating or excess gas

  • Constipation or diarrhoea

  • Heartburn or nausea

  • Ongoing abdominal discomfort

  • Frequent stomach noises

If symptoms persist or worsen, speak with your GP or pharmacist.

Probiotics vs Prebiotics: What’s the Difference?

You’ll often see both terms on packaging. While they sound similar, they do different things.

Probiotics

Probiotics are beneficial bacteria that may help support digestive system health and maintain healthy gut flora.

They can be found naturally in fermented foods such as:

  • Yoghurt with live cultures

  • Kefir

  • Sauerkraut

  • Miso

  • Kombucha

Keep in mind, not all fermented foods contain live active cultures, and some may be high in sugar or salt.

Probiotic supplements available in pharmacies contain specific strains in measured amounts. Different strains may support different health needs, so choosing the right one matters.

Prebiotics

Prebiotics are a group of nutrients that are support the health of beneficial gut bacteria

They are found naturally in foods such as:

  • Fruit and vegetables

  • Wholegrains

  • Nuts and seeds

  • Legumes like chickpeas and lentils

Most people can increase their prebiotic intake by making simple changes to their diet.

Food or Supplements- Which Should You Choose?

A balanced diet is always the first step for supporting gut health.

However, some people choose probiotic supplements because they provide consistent strains and doses. This can be helpful if your digestive system has been disrupted — for example, during or after antibiotic use.

If you’re unsure which option suits you, your pharmacist can help guide you.

When Might a Probiotic Be Considered?

A health professional may recommend a probiotic in certain situations, such as:

  • During or after antibiotic use

  • If you experience ongoing digestive imbalance

  • During periods of stress or travel

  • For general digestive system support

Because probiotic strains vary, it’s important to select one suited to your individual needs.

Always read the label and follow the directions for use. If symptoms persist, see your Medical Practitioner.

Simple Lifestyle Tips for Better Gut Health

Before reaching for a supplement, consider these everyday habits:

Stay hydrated

Water supports healthy digestion and bowel regularity.

Manage stress

Stress may affect digestive comfort. Gentle exercise, mindfulness or relaxation techniques can help.

Sleep and move regularly

Quality sleep and regular physical activity both support overall wellbeing — including digestive health.

Frequently Asked Questions

Q: I’m taking antibiotics. When should I take a probiotic?

A: If recommended by your pharmacist or medical practitioner, probiotics should be started as soon as the antibiotics are started.

Q: Can probiotics cause side effects?

A: Some people may notice temporary bloating or mild digestive changes when first starting a probiotic. This usually settles as the body adjusts. If symptoms continue, speak with your pharmacist or medical practitioner.

Q: Can I take any probiotic?

A: Not all probiotics are the same. Different strains may support different aspects of digestive health and other body systems that are influenced by the gut microbiome. Your pharmacist can help you choose an option appropriate for you.

Need support?

If you’re unsure whether a probiotic or prebiotic is right for you, speak with your pharmacist. We’re here to help you find an option that suits your individual health needs.

Disclaimer: This information is general in nature and does not replace medical advice. Vitamins may only be of assistance if dietary intake is inadequate. Vitamins do not replace a balanced diet. Always consult your pharmacist or GP for personalised guidance.

References

• Healthdirect. (n.d.). Gut health.
• Healthdirect. (n.d.). How can I improve my gut health? – Diet & supplements.
• Healthdirect. (n.d.). Probiotics – Key facts.
• Healthdirect. (n.d.). What are prebiotics?
• Nutrition Australia. (n.d.). Love your guts – Fact Sheet.
• Healthdirect. (n.d.). When might I need a probiotic supplement?
• Healthdirect. (n.d.). When should I see my doctor?