Hu, Hu and Manson (Harvard T.H. Chan School of Public Health, J Am Heart Assoc, 2019, PMID 31567003) pooled 13 randomised controlled trials and 127,477 participants and found each additional 1 g/day of marine omega-3 was associated with a lower risk of myocardial infarction and coronary heart disease. This Ireland buyer's guide compares EPA and DHA doses across fish oil supplements, covers the EFSA-authorised heart and brain claims, dosage, vegan algae options and safety, and the omega-3 range at Probiotic.ie including Carlson Super Omega-3 1200mg (€42.50) and NOW DHA-500 (€32.95), shipped tracked from Dublin under FSAI food supplement guidelines.

From 1 July 2026, Irish Revenue and the European Union are removing the de minimis customs exemption on parcels valued at €150 or less — replacing it with a flat €3 customs duty per distinct item on every parcel sent from a non-EU country, including the United States, Great Britain, and all UK supplement retailers, as confirmed by Revenue's May 2026 press release and the Council of the European Union's February 2026 regulation. This Ireland consumer guide covers exactly what is changing, how the €3-per-item charge works, what counts as a distinct item, real-world supplement cost examples for iHerb, US websites and UK retailers, the returns and VAT implications, and why goods ordered from Probiotic.ie — which ships from Dublin within the EU — are not subject to these new charges.

Irish Revenue confirmed on 28 May 2026 that the EU's de minimis customs exemption for parcels valued at €150 or less will be removed from 1 July 2026 — replacing the previous zero-duty threshold with a flat €3 customs duty per distinct item on all parcels shipped to Ireland from non-EU countries, including iHerb's US and South Korean fulfilment centres (Revenue.ie, May 2026; Council of the EU, February 2026). This Ireland consumer guide covers how the €3-per-item charge applies to iHerb orders specifically, real-world cost examples for single and multi-product orders, how payment is collected (at checkout vs on delivery), the returns and VAT implications, and how ordering from Probiotic.ie — which ships from Dublin within the EU — avoids these charges entirel

Unfer et al. (Università di Roma, Gynecological Endocrinology, 2012, PMID 22296306) demonstrated in a systematic review of 13 RCTs that myo-inositol at 4 g/day significantly improved menstrual regularity, ovulation rate, and hormonal markers in women with PCOS, with effects attributed to inositolphosphoglycan (IPG) second-messenger activity in insulin signalling pathways — EFSA has not established an authorised health claim for inositol, and it is regulated in Ireland as a food supplement under FSAI guidelines. This Ireland evidence guide covers what myo-inositol is, the myo-inositol vs d-chiro-inositol distinction, PCOS and hormonal evidence, dosage at 500 mg, 2 g, and 4 g, side effects and safety, the choline and inositol combination, and NOW Foods Inositol 500mg (100 veg caps, €17.45) and NOW Foods Choline & Inositol (100 veg caps, €17.95) — available with nationwide tracked delivery from Dublin, regulated under FSAI food supplement guidelines.

Whorwell et al. (University of Manchester, Am J Gastroenterol, 2006, PMID 16863564) demonstrated significant improvement in IBS composite symptom scores within 4 weeks using Bifidobacterium infantis 35624 at 1×10⁸ CFU/day, while Gionchetti et al. (Gastroenterology, 2000, PMID 10930365) measured 85% pouchitis remission maintenance at 9 months with the De Simone Formulation versus 6% in placebo — establishing the clearest published timing benchmarks for probiotic response in UK-relevant clinical populations. This Ireland evidence guide covers the signs probiotics are working by body system, how long probiotics take to work by use case (IBS, bloating, after antibiotics, women's health), signs they are not working, and features CDS22-formula (8 NCIMB strains, 450 billion CFU, €25.95 per 12-sachet pack, cold-chain delivered by Probiotic.ie) as the formulation with the deepest published evidence base available to Irish consumers.

Tursi et al. (Am J Gastroenterol, 2010, PMID 20517305) found the high-potency De Simone Formulation (then sold as VSL#3) reduced ulcerative colitis activity by ≥50% in 57.7% of patients vs 39.7% on placebo (p=0.031), and the AGA 2024 pouchitis guideline (Barnes et al., Gastroenterology, 2024) states the evidence favouring probiotics for preventing pouchitis recurrence is limited to the De Simone Formulation. This Ireland evidence guide compares probiotic strains, CFU counts, clinical-grade vs everyday formulations, FSAI regulation, cold-chain storage and named products, Alflorex, Symprove, Optibac and CDS22-formula Probiotic (12 sachets, €25.95), with nationwide tracked delivery from a temperature-controlled warehouse in Dublin.

Richie et al. (Penn State Cancer Institute, Eur J Nutr, 2014, PMID 24791752) conducted the first long-term RCT of oral glutathione in 54 adults, finding 30–35% increases in erythrocyte and lymphocyte GSH at 1,000 mg/day over 6 months (p<0.05), challenging the long-held assumption that oral glutathione is fully degraded before absorption. This Ireland evidence guide covers glutathione's mechanism as the body's master antioxidant, the bioavailability debate, skin evidence, liver and detoxification research, dosage, safety, form comparison (reduced vs liposomal vs NAC), and NOW Foods Glutathione 500mg Veg Caps (60 caps, €24.95, 13.5% VAT included) — available with nationwide tracked delivery from Dublin under FSAI food supplement guidelines.

Birkeland et al. (Oslo University Hospital, European Journal of Clinical Nutrition, 2020, DOI: 10.1007/s00394-020-02282-5) confirmed in a randomised controlled trial that six weeks of inulin-type fructans produced a significant bifidogenic effect — selectively increasing Bifidobacterium abundance — and raised faecal SCFA concentrations including acetic and propionic acid, while Thompson et al. (University of Colorado Boulder, Frontiers in Behavioral Neuroscience, 2017, DOI: 10.3389/fnbeh.2016.00240) demonstrated improved NREM sleep consolidation and reduced stress-induced gut microbiome disruption in a prebiotic-fed animal model. This Ireland evidence guide covers inulin's mechanism of action as a prebiotic fibre (FOS/fructooligosaccharide), bifidogenic microbiome data, weight management and satiety research, sleep and gut-brain axis evidence, dosage guidance, side effects, foods high in inulin, and NOW Foods Certified Organic Inulin Powder (Blue Agave, 227g/445g, from €18.95 inc. 13.5% VAT) — available with nationwide tracked delivery from Dublin, regulated as a food supplement under FSAI guidelines.

Ziegler et al. (Deutsche Klinik für Diagnostik, Diabetologia, 1995, PMID 8786016) demonstrated in a 3-week multicentre RCT that intravenous alpha lipoic acid (600mg/day) significantly reduced diabetic neuropathy symptom scores vs placebo — the ALADIN trial — followed by the SYDNEY 2 oral RCT (Diabetes Care, 2006, PMID 17065669) confirming 600mg/day oral ALA significantly improved neuropathy symptoms (p<0.001) in 181 participants, establishing ALA as one of the most clinically studied antioxidant compounds in peripheral nerve research. This Ireland evidence guide covers alpha lipoic acid benefits, R-ALA vs racemic ALA, dosage, long-term evidence context (including Cochrane 2024), blood sugar and neuropathy trial data, skin research, safety and side effects, and Swanson Alpha Lipoic Acid 600mg 60 Capsules (€24.95, Irish VAT 13.5% included) — available with 1–2 business day tracked delivery from Dublin, regulated under FSAI food supplement guidelines.

Reid et al. (University of Western Ontario, FEMS Immunol Med Microbiol, 2003, PMID 12628548) demonstrated that oral administration of Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri RC-14 demonstrated significant alteration of vaginal flora compared to placebo over 60 days (P=0.02), with 37% of women in the probiotic group showing restoration to normal lactobacilli-dominant microflora compared to 13% on placebo — establishing these strains as one of the most documented combinations in vaginal microbiome research. This Ireland evidence guide covers how probiotics work in the female body, strain selection by use case (gut, vaginal microbiome, daily general use), clinical evidence, dosage guidance, safety, and a verified comparison of four products available from Probiotic.ie — Optibac Intimate Flora For Women (€24.90), Swanson FemFlora (€18.45), NOW Women's Probiotic 20 Billion (€30.95), and Garden of Life Dr. Formulated Women's Probiotics 50B (€47.95) — with nationwide tracked delivery across Ireland.

Jacobsen et al. (Applied and Environmental Microbiology, 1999) confirmed that Lactobacillus rhamnosus Rosell-11 — the lead strain in Optibac Every Day — survives gastric transit and colonises the human gut, while Reid et al. (FEMS Immunology & Medical Microbiology, 2001, PMID 11376464) demonstrated that Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri RC-14 — the two primary strains in Optibac For Women — transit orally to colonise the vaginal microbiome, backed by over 30 years of research and trials in more than 2,500 women. This Ireland guide covers both Optibac products available from Probiotic.ie — an authorised Optibac retailer in Ireland — comparing strains, CFU counts, clinical evidence, who each product suits, dosage, side effects, and a head-to-head comparison table; Optibac Every Day (30 capsules) and Optibac For Women (30 capsules) are available with nationwide tracked delivery across Ireland.

Schaffer et al. (University of South Alabama, J Biomed Sci, 2010, PMID 20804594) characterised taurine as a conditional essential nutrient synthesised from cysteine, with established roles in osmoregulation, bile acid conjugation, cardiac calcium flux, and antioxidant defence — EFSA identified 6 g/day as an observed safe adult intake level (EFSA Journal, 2012;10(6):2736). This Ireland evidence guide covers taurine's mechanism of action, cardiovascular trial data including Waldron et al. meta-analysis (2018), the Singh et al. ageing study (Science, 2023), energy drink comparisons, dosage guidance, safety and interactions, and NOW Foods Taurine 1000mg Double Strength (250 veg capsules, €29.95) — available with nationwide tracked delivery from Dublin, regulated under FSAI food supplement guidelines.