Why "the best probiotic" isn't really a question
Walk into any pharmacy in Lebanon and you'll see at least 15 different probiotic brands on the shelf. They all claim similar things — "supports digestion," "boosts immunity," "balances gut flora." Most cost between US$15–35 per box. So which one should you actually buy?
The honest answer: it depends entirely on the strain, not the brand. Probiotics are not interchangeable. Each strain has been studied for specific conditions, and using the wrong one for your specific concern is the same as taking an antibiotic for a viral infection — well-intentioned and ineffective.
This guide compares the three probiotics most commonly prescribed in Lebanon — Lauker, Medvial Fervial, and B&S Florastor — by what they actually do, and helps you pick the right one for your situation.
What probiotics actually do (and what they don't)
Probiotics are live microorganisms that, when consumed in adequate amounts, confer a health benefit on the host. The "adequate amounts" part is critical — typically measured in CFU (Colony Forming Units), with most clinical trials using 10–50 billion CFU daily.
Probiotics genuinely help with: - ✅ Antibiotic-associated diarrhoea (prevention) - ✅ Acute infectious diarrhoea (especially in children) - ✅ Irritable Bowel Syndrome (IBS) symptoms - ✅ Vaginal flora restoration after yeast infections - ✅ Some skin conditions (eczema, particularly in infants) - ✅ Mild improvements in immune function
Probiotics probably help with (mixed evidence): - 🤔 Mood and "gut-brain axis" effects - 🤔 Weight management - 🤔 Lactose intolerance
Probiotics do NOT effectively treat: - ❌ Serious infections — see a doctor - ❌ Inflammatory bowel disease as a primary therapy (though some strains may help) - ❌ Generic "detox" claims
How to choose: strain matters more than CFU count
The two most important questions when picking a probiotic:
1. What strains does it contain?
"Lactobacillus" alone tells you nothing. You need the species AND the strain identifier (e.g. Lactobacillus rhamnosus GG — the "GG" is the specific strain). Different strains of the same species have very different effects.
2. Is it specific to your condition?
A probiotic studied for antibiotic-associated diarrhoea may be useless for IBS, and vice versa. Match the strain to the problem.
A high CFU count (50, 100, 200 billion) is not automatically better. More isn't more — the right strain at clinically-studied doses is more.
The 3 best probiotics in Lebanon, compared
🏆 1. Lauker Probiotic (20 capsules) — Best Multi-Strain Everyday Choice
Lauker is the most commonly-prescribed probiotic in Lebanese pharmacy practice. It's a multi-strain formulation (combining several Lactobacillus and Bifidobacterium species) designed for general digestive health and as a preventive after antibiotic courses.
Best for: - General digestive health maintenance - Recovery from a course of antibiotics - People who don't have a specific GI diagnosis but feel "off" - First-time probiotic users
How to use: 1 capsule daily with food, typically for 20–30 day courses. Many Lebanese physicians prescribe it as a 2–3 month course post-antibiotic.
▶ Shop Lauker Probiotic 20 Capsules
🌸 2. Medvial Fervial — Best for IBS & Women's Intimate Flora
Fervial is a more specialised formulation focused on intestinal-vaginal microbiome balance. It contains specific Lactobacillus strains (often including L. crispatus, L. rhamnosus, L. acidophilus) that have been studied for:
- Recurrent vaginal yeast infections
- Bacterial vaginosis prevention
- IBS with bloating predominance
- Post-antibiotic vaginal flora restoration
Best for: - Women experiencing recurrent yeast or BV infections - People with IBS-D or mixed-type IBS - Anyone where vaginal-intestinal flora axis is a concern
How to use: 1 capsule daily, often as a longer-term protocol (2–3 months minimum for recurrent infection prevention).
🛡️ 3. B&S Florastor — Best for Antibiotic-Associated Diarrhoea
Florastor's active strain is Saccharomyces boulardii — a yeast probiotic (not a bacterium). This is a critical distinction: because it's a yeast, it survives concurrent antibiotic use. You can take it while on antibiotics, not just after.
Saccharomyces boulardii is the single most-studied probiotic in clinical medicine with hundreds of randomised trials specifically for:
- Antibiotic-associated diarrhoea (Level A evidence)
- C. difficile recurrence prevention
- Traveller's diarrhoea
- Acute infectious diarrhoea in children
Best for: - Anyone starting a course of antibiotics — start S. boulardii on day 1 - C. difficile history - Children with acute diarrhoea (paediatrician approval) - Travel — start 5 days before departure
How to use: 1 capsule twice daily during antibiotic treatment and for 2 weeks after. For travel: 1 capsule daily starting 5 days before and through the trip.
▶ Shop B&S Florastor 30 Capsules
When to take a probiotic (timing matters)
With antibiotics:
- If using S. boulardii (Florastor): take during the antibiotic course, ideally 2 hours apart from the antibiotic dose.
- If using a Lactobacillus-based product (Lauker, Fervial): wait until 24 hours after finishing the antibiotic course before starting, because antibiotics will kill the live bacteria.
With food vs empty stomach:
Most modern probiotic capsules are coated to survive stomach acid. Taking them with a meal containing some fat improves survival rates. Avoid taking with very hot drinks (>40°C).
Time of day:
Consistency matters more than time. Morning with breakfast is the most-recommended pattern because it's easiest to remember.
How long to take probiotics
| Use case | Duration |
|---|---|
| Acute diarrhoea | Until symptoms resolve + 1 week |
| Concurrent with antibiotics | Through course + 2 weeks after |
| IBS management | 4 weeks minimum trial; continue if effective |
| Recurrent infection prevention | 3–6 month protocols |
| General gut health maintenance | Cyclical (e.g. 1 month on, 1 month off) |
| Long-term, indefinitely | Generally fine but cycling between strains may be beneficial |
Lauker vs Fervial vs Florastor — at a glance
| Feature | Lauker | Medvial Fervial | B&S Florastor |
|---|---|---|---|
| Type | Lactobacillus + Bifidobacterium multi-strain | Targeted Lactobacillus blend | Saccharomyces boulardii (yeast) |
| Best for | General gut health, post-antibiotic recovery | IBS, women's intimate flora | Antibiotic-associated diarrhoea, travel |
| Take with antibiotics? | ❌ No (wait until after) | ❌ No (wait until after) | ✅ Yes — during |
| Typical course | 20–30 days | 2–3 months | Duration of antibiotic + 2 weeks |
| Children | Adult only (other paediatric formulations exist) | Adult only | ✅ With paediatrician approval |
| Vegetarian/Vegan | Check label | Check label | ✅ Yes |
What about other digestive support products?
Probiotics aren't the only intervention for digestive symptoms. Depending on your symptoms:
- For bloating and gas: Ultra Gas-Go — simethicone-based fast relief.
- For occasional constipation: Laxinor Forte and similar gentle laxatives — see your pharmacist.
- For broader digestive support: B&S Super Colon — fibre and herbal blend for sluggish digestion.
Many people benefit from combining a probiotic with a digestive enzyme — but discuss this with your pharmacist or GP.
Where to buy probiotics in Lebanon
NexusCare stocks the full range of probiotics distributed in Lebanon. Critically: probiotics must be stored at the right temperature — improper storage in pharmacy back rooms reduces live bacteria counts dramatically. We maintain cold-chain integrity from manufacturer to your door.
▶ Browse all digestive health supplements for related products from B&S.
Frequently asked questions
Can I just eat yogurt instead of taking a probiotic? Yogurt provides 1–5 billion CFU per serving — a fraction of the 10–50 billion in a clinical probiotic. Yogurt is great for general health but is not a substitute for probiotics if you're treating a specific condition.
Do probiotics need to be refrigerated? The major brands stocked at NexusCare use shelf-stable formulations (microencapsulated or freeze-dried) that don't require refrigeration. Always check the individual product label.
Will probiotics interact with my medications? Probiotics have very few drug interactions. The main exception is immunosuppressant medications — if you're on chemotherapy, post-transplant medications, or biologics, confirm with your doctor first.
Can I take Lauker and Florastor together? Yes — they work via different mechanisms (Lauker repopulates bacterial flora; Florastor's S. boulardii yeast acts as a barrier). Some physicians prescribe both simultaneously during antibiotic courses.
How long do probiotic effects last after I stop taking them? The bacteria mostly clear from the gut within 1–2 weeks of stopping. The effects (e.g. on inflammation, immune function) often persist longer, but most ongoing benefits require continued use.
What's the difference between probiotics and prebiotics? Probiotics are the live bacteria themselves. Prebiotics (like inulin, FOS) are the fibres that feed good bacteria. Combining both ("synbiotic" formulations) is often more effective than probiotics alone.
Are there side effects? Mild bloating and gas in the first 5–7 days as flora rebalances — this is normal and resolves. Persistent symptoms warrant stopping. Very rarely, immunocompromised patients can develop serious infections from probiotics.
Going deeper
For women using probiotics as part of broader hormonal health management, see our Inositol for PCOS guide — gut microbiome balance and hormonal health are tightly linked.
If you're using antibiotics or have recurrent infections, also discuss vitamin D and zinc levels with your physician — both are critical for immune function alongside probiotic support.
This article is informational. If you have persistent or severe digestive symptoms, consult a physician — not all GI issues are appropriately managed with probiotics.