Lactobacillus acidophilus
Also known as: L. acidophilus
Colonises both gut and vaginal walls. Produces lactic acid that maintains healthy pH in both locations, supporting against pathogen adhesion and natural defenses.
What it is
Lactobacillus acidophilus is a well-studied probiotic bacterial strain naturally found in the human gut and vaginal microbiome, where it produces lactic acid to help maintain a healthy, slightly acidic environment.
Why we use it
We include it in Women's Probiotic Gummies as one of several targeted strains chosen for their research specifically around gut and vaginal microbiome balance, rather than a generic multi-strain blend.
What the research generally suggests
Research generally supports L. acidophilus's ability to survive digestion and colonise the gut and vaginal tract, where it's associated with maintaining healthy pH and helping crowd out less favourable bacteria — though individual responses to any probiotic strain can vary.
Typical amounts
Clinical studies on this strain commonly use doses in the billions of CFU (colony-forming units) per day; supplement labels typically state CFU count alongside milligram weight.
In Flexies products: 15mg per serving.
Benefits
- Vaginal pH balance
- Gut barrier
- Pathogen defense
- Lactose digestion
Good to know
- • Probiotics are generally considered safe for most people, but those who are immunocompromised should check with their GP before starting any new probiotic.
- • If symptoms like recurrent thrush or BV persist, see your GP or gynaecologist rather than relying on supplements alone.
As always, if you're unsure whether this ingredient is right for you, chat to your GP or pharmacist before adding it to your routine.