Yamadera et al. (Sleep and Biological Rhythms, 2007) found that 3 g of glycine ingested before bedtime significantly shortened latency to sleep onset (p = 0.01) and to slow wave sleep (p = 0.019) in polysomnographic measurements, while Bannai and Kawai (Journal of Pharmacological Sciences, 2012, Ajinomoto Co.) identified NMDA receptor activity in the suprachiasmatic nucleus as the proposed mechanism by which glycine is thought to lower core body temperature and support sleep onset. This Ireland evidence guide covers the glycine-for-sleep mechanism, RCT data from Yamadera et al. and Bannai et al., the GlyNAC longevity stack, collagen synthesis context, glycine versus magnesium glycinate explained, dosage guidance, and NOW Glycine 1000mg 100 Veg Capsules — available with nationwide Ireland delivery from Probiotic.ie.

Resveratrol, a polyphenol from Polygonum cuspidatum root — is proposed to modulate SIRT1 (Sirtuin-1), a NAD⁺-dependent deacetylase linked to cellular ageing pathways; Sinclair et al. (Harvard Medical School) identified SIRT1 pathway modulation as a key proposed mechanism in resveratrol longevity research. This Ireland evidence guide covers the SIRT1 mechanism, clinical trial data, NMN and pterostilbene stacking protocols, trans-resveratrol bioavailability, dosage guidance, and Swanson Resveratrol 250mg Higher Potency — available with next-day DPD delivery across Ireland.

Rhodiola rosea root contains rosavins and salidroside — compounds proposed to modulate the HPA axis stress response and support monoamine neurotransmitter pathways including serotonin and dopamine. A 2009 RCT by Olsson et al. (Planta Medica) found that standardised extract SHR-5 significantly reduced burnout fatigue after 28 days (p<0.05); this Ireland guide covers dosage, side effects, comparisons with ashwagandha, and where to buy Rhodiola rosea in Ireland.

A 2023 Cochrane systematic review (Flowers et al.) identified CoQ10 (coenzyme Q10, ubiquinone) as a fat-soluble compound central to mitochondrial ATP synthesis, with plasma levels declining measurably after age 40 and further reduced by statin therapy. This evidence guide covers what CoQ10 is good for, how 100mg and 200mg doses compare, the ubiquinone versus ubiquinol distinction, statin interactions, side effects, and where to buy CoQ10 supplements in Ireland with nationwide tracked delivery.

Clinical trials on saw palmetto (Serenoa repens) show it partially inhibits 5-alpha-reductase — the enzyme that converts testosterone to DHT, the primary driver of androgenetic alopecia and benign prostatic hyperplasia. This evidence-based guide covers the research on saw palmetto for hair loss, prostate support, and women's use in Ireland, including safety data, dosage, and where to buy.

N-acetylcysteine (NAC) is one of the most researched supplements in Ireland, studied for its role in glutathione production, liver support, respiratory health, and antioxidant biology. This guide covers what NAC does, what the evidence actually shows across key areas — including PCOS, OCD, and liver health — how to dose it correctly, side effects to know, and what to look for when buying NAC in Ireland in 2026.

Clinical trials show strain-specific probiotics reduce bloating severity scores in IBS patients, with the De Simone formulation studied across multiple randomised controlled trials referenced in ECCO IBD guidelines. This Ireland guide covers strain comparison, CFU thresholds, and realistic timelines for Irish consumers choosing between CDS22, Alflorex, and Symprove.

Irish consumers searching for a VSL3 alternative need to know: the original De Simone Formulation that was in VSL#3 before 2016 is now available in Ireland as CDS22-formula. Same 8 strains. Same potency. New name.

The De Simone formulation has demonstrated statistically significant remission rates in ulcerative colitis in multiple randomised controlled trials, including Gionchetti 2000 and Mimura 2004, and is referenced in ECCO IBD guidelines. CDS22 is the only product available in Ireland containing the original 8-strain formula at 450 billion CFU per sachet.

Vitamin D deficiency affects an estimated 40% of the Irish population, with the HSE recommending 400 IU daily for adults and the FSAI setting a tolerable upper intake of 4,000 IU. This Ireland guide covers deficiency symptoms, testing thresholds, D3 versus D2 bioavailability, and how to evaluate supplement quality for Irish consumers.

Probiotic strain codes such as Lactobacillus acidophilus DSM 24735 and Bifidobacterium longum DSM 24736 identify the exact organism studied in clinical trials — generic names like "Lactobacillus acidophilus" on Irish supplement labels do not guarantee the same efficacy. This guide covers strain identification, CFU viability, storage requirements, and FSAI regulatory standards for probiotic supplements in Ireland.

Clinical trials show the De Simone formulation produces statistically significant reductions in IBS symptom scores across IBS-D, IBS-C, and IBS-M subtypes, with evidence reviewed in ECCO IBD guidelines and American Gastroenterological Association (AGA) clinical guidance. This Ireland guide covers strain-specific evidence, CFU thresholds, and product comparisons including CDS22, Alflorex, and Symprove for Irish consumers.