Probiotic.ie Expert Gut Health & Supplement Guides for Ireland

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.