{"product_id":"sleep-stress-stack","title":"Sleep \u0026 Stress Stack","description":"\u003cp\u003e\u003cstrong\u003eSave £7.75 when bought together, 15% off buying separately.\u003c\/strong\u003e Magnesium, L-theanine and vitamin D at the doses used in the research.\u003c\/p\u003e\u003cp\u003eThree supplements chosen for what the trials actually tested, at the doses they actually used. We have been deliberate about what we do and do not stack here.\u003c\/p\u003e\u003ch2\u003eWhat is in this stack\u003c\/h2\u003e\u003ch3\u003eL-Theanine 200mg\u003c\/h3\u003e\u003cp\u003eThe strongest single trial (Hidese, Nutrients 2019) used 200mg daily for four weeks in a randomised placebo-controlled crossover design, reporting improved sleep-quality scores and reduced stress ratings. Note that two authors were employed by the ingredient supplier, which is disclosed in the paper. A 2020 systematic review of nine trials suggests 200 to 400mg daily may support a calm state of mind under stressful conditions.\u003c\/p\u003e\u003ch3\u003eMagnesium Bisglycinate\u003c\/h3\u003e\u003cp\u003eTrials in this area used roughly 300 to 500mg elemental magnesium in the evening over three to eight weeks. The evidence is genuinely modest: a 2021 meta-analysis in older adults rated certainty low. We include it because the bisglycinate form is well tolerated, not because the sleep data is strong.\u003c\/p\u003e\u003ch3\u003eVitamin D 1000 IU Daily Oral Spray\u003c\/h3\u003e\u003cp\u003eThe NHS advises everyone in the UK to consider a daily vitamin D supplement in autumn and winter. Vitamin D contributes to normal muscle function and to the normal function of the immune system. Included as the foundation any UK stack should have.\u003c\/p\u003e\u003ch2\u003eThe products\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/double-strength-l-theanine-200mg-120-vcaps\"\u003eDouble Strength L-Theanine, 200mg - 120 vcaps\u003c\/a\u003e (NOW Foods) — £23.35\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/magnesium-bisglycinate-powder-227g\"\u003eMagnesium Bisglycinate Powder - 227g\u003c\/a\u003e (NOW Foods) — £18.80\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/d1000-daily-vitamin-d-oral-spray-15-ml\"\u003eD1000 Daily Vitamin D Oral Spray - 15 ml.\u003c\/a\u003e (BetterYou) — £9.52\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOur position\u003c\/h2\u003e\u003cp\u003eWhat we left out, and why: we do not include ashwagandha. It has the largest reported effect sizes in this category, but also documented liver-injury case reports and restrictions from European regulators. We also do not sell melatonin, which is a prescription-only medicine in the UK.\u003c\/p\u003e\u003cp class=\"perqen-bundle-disclaimer\"\u003eFood supplements are not a substitute for a varied diet or medical care. Speak to your GP or pharmacist before changing what you take, especially if you are pregnant, breastfeeding or taking prescribed medicines.\u003c\/p\u003e","brand":"Perqen","offers":[{"title":"Default Title","offer_id":48756011827449,"sku":"BUNDLE-SLEEP-STRESS-STACK","price":43.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0806\/8995\/5065\/files\/sleep-stress-stack-composed.png?v=1785906819","url":"https:\/\/perqen.co.uk\/products\/sleep-stress-stack","provider":"Perqen","version":"1.0","type":"link"}