Probiotic Guides Ireland
Evidence-Based Probiotics, Gut Health & Supplement Advice
Probiotic.ie publishes independent, evidence-led guides for Irish consumers on probiotics, gut health and high-quality food supplements.
Our guides are written to explain:
• Probiotic strains, CFU counts and storage
• Safe use with antibiotics and digestive conditions
• Berberine, magnesium, vitamin D3 and omega-3 supplementation
• Kids’ and family gut health considerations
• Product comparisons and safety checks referencing FSAI and recognised authorities
All articles are written for the Irish market and updated regularly.
Probiotic.ie publishes independent, evidence-led guides for Irish consumers on probiotics, gut health and food supplements. Every guide cites named published research, references HSE and FSAI guidance where relevant, and is written specifically for the Irish market.
These guides are educational and do not constitute medical advice. Food supplements are not medicines and are not intended to diagnose, treat, cure or prevent any disease. Probiotic.ie sells food supplements, including CDS22-formula, and is not a neutral party. If you have persistent or worsening symptoms, speak to your GP.
- Start Here · Probiotics PillarClinical Probiotics Ireland: Strains, CFU & How to ChooseThe master guide to reading a probiotic label in Ireland: what a strain deposit code tells you that a species name does not, how CFU is stated and what it means, storage and handling, and how to match a product to the published research. Start here, then go deeper on a specific topic below.
- VSL#3 Alternatives in Ireland: The De Simone Formulation ExplainedWhat ECCO, the AGA and the US courts have each said about the De Simone Formulation, with every contested position attributed to the party that stated it, including the position of Actial S.r.l., which disagrees. Includes the current NCIMB strain list and a taxonomy note.
- Probiotics for Bloating Ireland: What the Evidence Actually SaysWhat the published trials report, including Kim et al. 2003 and 2005 and the Goodoory 2023 meta-analysis in Gastroenterology, alongside the limitations of that evidence. Covers a realistic 4 to 8 week timeline and how to read a label.
- Probiotics and IBS in Ireland: Evidence, Strains & ResearchWhat randomised trials have measured in IBS populations across the IBS-D, IBS-C and IBS-M subtypes, which strains were studied, and where the evidence is weaker than the marketing suggests.
- Probiotics and Ulcerative Colitis in Ireland: What the Evidence SaysAn editorial review of the published trials in ulcerative colitis, including Gionchetti 2000 and Mimura 2004, and how clinical guidelines refer to formulations rather than to retail products. Educational only, not treatment guidance.
- Probiotics in UC, IBS & Pouchitis: An Evidence Review for IrelandHow the published trial evidence differs across these three conditions, which formulations were studied, and why guideline references name formulations rather than brands. Educational only, not treatment guidance.
- Choosing a Probiotic in Ireland: A Buyer's Framework (2026)A neutral framework applied to the products commonly sold in Ireland: strain deposit codes, CFU as stated on the label, storage requirements, format, and FSAI regulatory context.
- Probiotics With Antibiotics in Ireland: Can You Take Them Together?Timing and duration as used in the published studies, what the evidence covers for Lactobacillus rhamnosus GG and Saccharomyces boulardii, and why this is a question for your GP or pharmacist if you are on a course.
- Probiotic Strains Explained: The Complete Guide for IrelandWhy a deposit code such as NCIMB 30442 identifies the exact organism used in a trial, and why a species name on its own does not. Covers strain identification, CFU on the label, and FSAI regulatory standards.
- Probiotics for Women in Ireland: Evidence Guide & Product Comparison 2026Which strains have been studied in trials with female participants, how the products sold in Ireland differ by strain and format, and the FSAI position on what may and may not be claimed.
- Optibac Probiotics Ireland: Every Day vs For WomenThe two Optibac products side by side on strain profile, CFU per capsule and published evidence, taken from the manufacturer's own published label information.
- High-Strength Probiotics in Ireland: What "Intensive" Actually MeansThere is no legal definition of high strength on an Irish label. Covers how CFU is stated, why a dose used in a trial is not the same as a retail serving, and how to compare high-CFU products.
- Lactobacillus Gasseri Ireland: Evidence Guide & How to ChooseWhat the randomised trials measured, strain by strain, including Kadooka et al. 2010, plus capsule delivery formats and how to evaluate L. gasseri products sold in Ireland.
- CDS22-formula and Symprove: An Evidence Comparison for IrelandFormat, strain listing and stated CFU for each product, taken from each manufacturer's own published label information, alongside the published trials each cites.
- CDS22-formula and Optibac Every Day: An Evidence Comparison (Ireland)Strain listing, format and stated CFU for each product, taken from each manufacturer's own published label information, with a note on why CFU alone is not a comparison.
- Start Here · Comparison PillarWhich Magnesium Is Best? Every Form Compared (Ireland)The master guide to magnesium in Ireland: glycinate, citrate, malate, taurate and L-threonate compared side by side on verified elemental magnesium, tolerance and format, with HSE dosing and the ten EFSA-authorised claims. Start here, then go deeper on any single form below.
- Magnesium Glycinate Ireland: Guide, Benefits, Dosage & LabelsElemental magnesium explained, HSE dosing (300mg men, 270mg women), the EFSA-authorised claims, and how to decode a label as an Irish buyer.
- Magnesium Bisglycinate Ireland: Benefits, Dosage & How It ComparesBisglycinate means both bonding sites on the magnesium ion are occupied by glycine, a chelated form chosen for gastrointestinal tolerance. Label decoding, HSE intake guidance and how to compare formats.
- Magnesium Glycinate vs Citrate Ireland: What Actually Differs?Elemental magnesium content, tolerance differences, HSE intake guidance, and how to choose between the two most-searched magnesium forms in Ireland.
- Magnesium for Sleep Ireland: Does Glycinate Work? Evidence & DosageThe 2025 magnesium bisglycinate sleep RCT (Schuster et al., Nat Sci Sleep, PMID 40918053), the honest glycine dose question, the EFSA-authorised claims, and the HSE dosing framework.
- Berberine Ireland: Evidence, Dosage & How to ChooseBerberine is proposed to interact with AMPK signalling pathways. Covers the dosing used in published randomised trials, what the evidence does and does not establish, and FSAI regulatory context.
- Berberine & Probiotics Ireland: What the Research CoversWhat has and has not been studied on taking berberine alongside a multi-strain probiotic, including timing, and the FSAI position on combination claims.
- NAC Supplement Ireland: Benefits, Dosage & Evidence GuideN-Acetyl Cysteine as a precursor to glutathione, studied at 600mg to 1,800mg daily in published trials. Covers the evidence by research area, safety, and FSAI regulatory status in Ireland.
- Lion's Mane Mushroom Ireland: Research & Evidence GuideHericenones and erinacines as the compounds of interest, fruiting body versus mycelium sourcing, what the small number of human trials actually measured, and how to choose in Ireland.
- L-Theanine Ireland: Evidence Guide, Dosage & SafetyAn amino acid found in green tea, studied at 200 to 400mg in randomised trials including Kimura et al. 2007. Covers what those trials measured, dosing, safety and FSAI context.
- Vitamin D3 Ireland: Dosage, Deficiency, Foods & SupplementsHSE intake guidance for Irish adults, the FSAI tolerable upper intake level, D3 versus D2, dietary sources, and why latitude matters for Ireland specifically.
- CoQ10 Supplement Ireland: Coenzyme Q10 Evidence GuideCoenzyme Q10's role as a mitochondrial electron carrier, ubiquinol versus ubiquinone, what the published human trials cover, and how to assess supplement quality in Ireland.
- Saw Palmetto Ireland: Evidence, Extracts & Side EffectsSerenoa repens and the 5-alpha reductase pathway, what the published trials measured and where results conflict, extract types and dosing, and FSAI regulatory status.
- Rhodiola Rosea Ireland: Benefits, Dosage & Evidence GuideAn adaptogenic herb studied in randomised trials for stress resilience and fatigue. Covers rosavins and salidroside as marker compounds, extract standardisation, dosing, and FSAI context.
- Resveratrol Ireland: Evidence Guide & How to ChooseA polyphenol studied in the context of cellular ageing pathways, including proposed interaction with sirtuin signalling. Covers trans-resveratrol bioavailability, what human trials show, and Irish supplement quality criteria.
- Glycine Supplement Ireland: Sleep, Collagen & Evidence GuideA non-essential amino acid studied at 3g before bed in small sleep trials. Covers its role in collagen synthesis, what the human evidence establishes and what it does not, and FSAI regulatory status.
- Taurine Supplement Ireland: What It Is, Benefits, Dosage & Where to BuyA conditionally essential amino acid. Covers the EFSA observed safe adult intake level, what the human trials measured, dosing used in research, and FSAI regulatory status.
- Alpha Lipoic Acid Supplement Ireland: Evidence Guide 2026An antioxidant compound studied in randomised trials including the Ziegler multicentre work. Covers R-ALA versus S-ALA, the dosing used in research, and Irish supplement quality criteria.
Reference guides · Educational content only, not medical advice · Food supplements are not medicines · Updated regularly
VSL#3 is a registered trademark of VSL Pharmaceuticals Inc. and Actial S.r.l. Vivomixx is a registered trademark of Mendes SA. Probiotic.ie is not affiliated with, endorsed by or connected to those trademark holders. Any third-party trademarks referred to remain the property of their respective owners.
Cho et al. (Pusan National University, Evid Based Complement Alternat Med, 2014, PMC4017725) ran a randomised, double-blind, placebo-controlled trial in 76 men with androgenetic alopecia, reporting increased hair count after 24 weeks on a branded, manufacturer-funded 400 mg/day pumpkin seed oil capsule versus placebo, while the 5-alpha-reductase mechanism behind it has been shown only in animal models. This Ireland evidence guide covers pumpkin seed oil's fatty-acid composition, the human hair, prostate and overactive-bladder trials (Hong 2009, Nishimura 2014), the saw palmetto combination, capsules versus cold-pressed culinary oil, dosage and safety, and Swanson Pumpkin Seed Oil 1000mg (100 gelatin softgels, EUR 16.95) dispatched next-day from Dublin under FSAI food supplement rules.
Read moreA 2021 systematic review and meta-analysis by de Miranda, Weimer and Rossi (UNISINOS, Int J Dermatol 2021;60(12):1449-1461, PMID 33742704) reported gains in skin hydration and elasticity from hydrolysed collagen peptides, while a 2025 Am J Med meta-analysis by Myung and Park found the effect was smaller once industry-funded trials were separated out. This Ireland evidence guide covers whether collagen works, how types I, II and III differ by dose and mechanism, marine vs bovine sources, the EFSA claim position, dosage, safety, and the collagen range at Probiotic.ie from EUR 19.95, dispatched from Dublin.
Read moreWomen store 70–80% less creatine than men (Smith-Ryan et al., Nutrients, 2021, PMID 33800439), and the EU authorises the claim that creatine increases physical performance in successive bursts of short-term, high-intensity exercise at a 3 g/day intake (Regulation 432/2012) — a claim that applies to women and men alike. This Ireland guide covers creatine for women across strength, the menopause transition and the over-55 muscle-strength claim, dosing, the water-weight and "bloating" question, safety, and the vegan Reflex CreaPure® Creatine Powder (500g, €34.95) with next-day dispatch from Dublin under FSAI food-supplement rules.
Read moreThe International Society of Sports Nutrition (Kreider et al., J Int Soc Sports Nutr, 2017, PMID 28615996) describes creatine monohydrate as the most effective ergogenic nutritional supplement for high-intensity exercise capacity and lean mass, and the EU authorises the claim that creatine increases physical performance in successive bursts of short-term, high-intensity exercise at a 3 g/day intake (Regulation 432/2012). This Ireland guide covers creatine forms, CreaPure® purity, dosing (loading versus daily 3–5 g), the evidence for women and over-55s, cognition claims and their limits, kidney and hair-loss safety questions, and Reflex CreaPure® Creatine Powder 500g (€34.95) and Capsules (€14.95) with next-day dispatch from Dublin under FSAI food-supplement rules.
Read moreKato-Kataoka et al. (J Clin Biochem Nutr, 2010, PMID 21103034) found soy-derived phosphatidylserine improved delayed verbal recall in elderly adults over six months, while Hellhammer et al. (Lipids Health Dis, 2014, PMID 25081826) recorded significant ACTH normalisation (p=0.010) in the highest-stress subgroup of men taking 400mg/day. This Ireland guide covers phosphatidylserine's mechanism, EFSA claim status, cortisol and memory evidence, dosage and safety, and Swanson Phosphatidylserine 100mg (30 softgels, €18.90) — regulated under FSAI food supplement guidelines with nationwide Ireland delivery.
Read moreShmalberg et al. (University of Florida, Frontiers in Veterinary Science, 2019;6:163, PMID 31275948) randomised 60 dogs with acute diarrhoea and found no statistically significant difference between a probiotic, metronidazole and placebo (3.5 vs 4.6 vs 4.8 days to acceptable faecal consistency, p = 0.17), while the ACVIM-endorsed consensus statement on canine chronic inflammatory enteropathy (Heilmann, Jergens et al., J Vet Intern Med 2026;40(1):aalaf017, PMID 41742497) places dietary trials first and describes probiotics as having a limited role. This Ireland evidence guide covers what canine research shows across acute diarrhoea and chronic enteropathy, which strains have been studied including Enterococcus faecium SF68 and the eight-strain De Simone Formulation, the trials that found no benefit, safety in higher-risk dogs, and why a human food supplement is not a licensed veterinary product under HPRA rules.
Read moreThe ISAPP consensus definition (Hill et al., Nature Reviews Gastroenterology & Hepatology, 2014, PMID 24912386) emphasises that probiotic benefits should be read in relation to the specific strains and the studied dose, so a headline CFU number alone does not define a probiotic's strength. This Ireland evidence guide covers what CFU means, CFU at manufacture versus expiry, strain identity versus strain count, refrigerated versus shelf-stable storage, higher-dose safety, and how 50, 100 and 450 billion products compare, including CDS22-formula, the original 8-strain De Simone Formulation (450 billion CFU per sachet, €25.95) with Irish cold-chain delivery.
Read moreA 2021 meta-analysis of nine randomised trials (Zhou et al., Nutrients 2021;13(9):2917, PMC8472736) reported oral astaxanthin improved skin moisture (SMD 0.53, p=0.03) and elasticity (SMD 0.77, p=0.009) versus placebo, but found no significant effect on wrinkle depth. This Ireland evidence guide covers astaxanthin's skin and eye research, dosage and whether 12mg is too much, EFSA safety (8mg/day from supplements assessed safe for adults, EFSA 2020, PMID 32874213), vegan options, and the two products we stock: NOW Foods Astaxanthin 4mg (vegan, EUR 22.95) and Healthy Origins Astaxanthin 12mg (EUR 58.50), dispatched from Dublin, normally within 24 hours.
Read moreAshwagandha-containing food supplements are sold in Ireland under Irish and EU food law; they are food supplements, not licensed medicines, individual products must be notified to the FSAI (notification is not approval), and no EU-authorised health claim exists for ashwagandha (Food Safety Authority of Ireland; EU Regulation 1924/2006). This Ireland guide sets out the dated regulatory position (including Denmark's 2023 prohibition and the UK COT review unfinished as of April 2026), the safety signals regulators are assessing (liver, thyroid, blood glucose), what the clinical research has examined, dosage context, and Swanson Ashwagandha KSM-66 250 mg (60 veg caps, €17.45) with tracked delivery from Dublin.
Read moreEvidence Guide · Magnesium Forms Ireland · July 2026 Glycinate, citrate, malate, taurate, L-threonate. The forms look different, and the marketing tells you each one is "for" something specific...
Read moreThe European Food Safety Authority (EFSA NDA Panel, EFSA Journal 2010;8(3):1462) set the adequate intake of dietary fibre for adults at 25 g per day, and a 2018 meta-analysis (Jovanovski et al., Am J Clin Nutr, PMID 30239559) found psyllium fibre significantly lowered LDL cholesterol across randomised trials. This Ireland guide compares inulin, psyllium husk, PHGG and resistant maltodextrin, the 25 g/day target, soluble vs insoluble fibre, authorised EU claims and how to start without discomfort, and covers Healthy Origins Sunfiber PHGG (225g, €25.95) with tracked delivery from Dublin under FSAI food-supplement rules.
Read moreThe EFSA NDA Panel (EFSA Journal, 2015;13(7):4150) set an Adequate Intake of 4 µg/day of vitamin B12 (cobalamin) for adults and derived no tolerable upper intake level, while Green et al. (Nature Reviews Disease Primers, 2017, PMID 28660890) reported subclinical B12 deficiency affecting 2.5–26% of the general population, with older adults and people who eat few animal-source foods at highest risk. This Ireland evidence guide covers what vitamin B12 is, methylcobalamin vs cyanocobalamin, food sources, dosage and the 8 EFSA-authorised health claims, and compares standalone B12 with NOW B-100 (€22.95), Swanson Daily (€15.95) and Doctor's Best Fully Active (€20.45) B-complex supplements, regulated under FSAI food-supplement guidelines with tracked delivery from Dublin.
Read moreEditorial Transparency
About the Author
Darren Grant is the Founder and Managing Director of Probiotic.ie, Ireland’s specialist retailer for clinically formulated probiotics and high-quality food supplements. He is the sole official distributor in Ireland and the UK of the original De Simone formulation, including CDS22-formula.
With over a decade of experience in supplement distribution, formulation analysis and regulatory compliance, Darren works directly with manufacturers and clinical experts to review probiotic strains (including L. rhamnosus GG and Saccharomyces boulardii), CFU counts, ingredient quality and safety standards before products are listed.
His guides reference recognised authorities such as Cochrane reviews, NHS guidance, the Food Safety Authority of Ireland (FSAI) and HPRA frameworks where relevant. Content is written to help Irish consumers understand strains, dosages (for example berberine 500 mg or vitamin D3 2000 IU), and safety considerations before purchasing.
All content is informational only and not medical advice.
- CDS22-formula is an 8-strain live bacteria food supplement manufactured by EOS2021 S.r.l., at 450 billion CFU per sachet
- The eight strains are identified on the current Irish label by their NCIMB deposit codes, NCIMB 30435 to NCIMB 30442
- The formulation was developed by Professor Claudio De Simone and is referred to in the published literature as the De Simone Formulation
- EOS2021 S.r.l. states that CDS22-formula contains the De Simone Formulation. This is a manufacturer statement, not an independent finding
- ECCO stated in October 2023 that the De Simone Formulation was sold under the VSL#3 brand until 2016, and that after 2016 the product sold as VSL#3 no longer contains it. ECCO does not reference CDS22-formula and does not endorse any retail product
- The AGA 2024 pouchitis guideline (Barnes et al., Gastroenterology 2024;166(1):59-85, PMID 38128971) names the De Simone Formulation as the probiotic used in the trials it reviewed. That recommendation is conditional and based on low-certainty evidence, and applies to secondary prevention of recurrent pouchitis only
- The published literature on the formulation runs to over 200 publications and more than 80 clinical studies. No clinical trial has been conducted on CDS22-formula under that product name
- Probiotic.ie is the sole exclusive distributor of CDS22-formula for Ireland and the United Kingdom, appointed under written agreement with EOS2021 S.r.l. Every pack sold here comes through us, including stock held by pharmacies. Probiotic.ie is not the sole retailer
- Stock is held refrigerated at +2°C to +8°C at a temperature-controlled facility in Dublin and dispatched on a tracked service. Free tracked Irish delivery on orders over €75
- CDS22-formula is a food supplement, not a medicine. It is not authorised by the HPRA and is not intended to diagnose, treat, cure or prevent any disease or health condition. No authorised EU or Irish health claim is made for it. Food supplements in Ireland are regulated by the FSAI; Irish VAT on supplements is 13.5%
VSL#3® is a registered trademark of VSL Pharmaceuticals Inc. and Actial S.r.l. Vivomixx® is a registered trademark of Mendes SA. Probiotic.ie is not affiliated with, endorsed by or connected to the holders of those trademarks, and nothing here should be read as a claim that CDS22-formula is, continues to be, or is a version of any of those branded products. Probiotic.ie sells CDS22-formula and is not a neutral party on this subject.