{ "slug": "glycine-night", "name": "Glycine at night", "aliases": [ "3g glycine", "glycine sleep", "glycine before bed", "glycine powder night" ], "family": "sleep", "heat": "high", "talk": "Lots of talk", "mostDiscussed": false, "firstLine": "Glycine at night is the bedtime use of a glycine amino-acid supplement.", "whyLine": "The appeal is a simple evening powder added to a familiar routine. Reports range from easier wind-down to no obvious change, with taste, stomach comfort and other bedtime changes complicating the comparison.", "feelWords": [ "3g glycine", "glycine sleep", "glycine before bed", "glycine powder night" ], "commonPicture": [ { "lead": "Amount discussed", "why": "About 3 g powder is the common report; separate accounts mention higher amounts such as 10 g. [community]" }, { "lead": "Timing discussed", "why": "People commonly describe taking it 30–60 minutes before bed. [community]" }, { "lead": "Other ingredients complicate comparison", "why": "Magnesium is often used in the same routine, making one change harder to isolate. [community]" } ], "watchFor": "Reports of easier wind-down do not mean glycine reliably induces sleep. The separate STUDresearch notes cover compound details.", "whatPeopleSay": [ "**The job:** a cheap amino people take so falling asleep feels slightly easier — thermostat lore, not a knockout. [community]", "**Why it is loud in 2026:** X threads (3 g glycine, mag, sometimes milk/honey) and r/sleep stacks next to magnesium-night. [community]", "**Kawai / Bannai-era papers** get pasted for core-temperature and next-day fatigue talk. That is trial-shaped, not a promise. [trial]", "**Not melatonin.** Different job. Melatonin is a separate Research card. [community]", "**Different from prescription sleep medicines:** Quviviq and Dayvigo are dual orexin receptor antagonists, or DORAs; they are separate from glycine. [community]", "**Not magnesium-night.** Mag is the mineral habit; this is the amino scoop. People run both. [community]", "**Taste:** sweet-ish powder. Some hate it and use caps. [community]", "**10 g lore** exists on X. 3 g is the usual comparison number. [community]", "**If they already eat collagen/glycine-rich food** they may not notice a scoop. [community]", "**Soft rooms:** r/sleep, r/Nootropics, Huberman-adjacent lists. [community]" ], "howPeopleRunIt": [ "**Scoop ~3 g** into a little water. [community]", "**Drink 30–60 min before they want lights-out.** [community]", "**Keep the cool-dark-phone rules.** The powder is not a feed replacement. [community]", "**Magnesium glycinate is a separate product:** using it alongside glycine changes more than one variable and is not an equivalent gram amount. [community]", "**Skip a night** if they are testing what actually did the work. [community]", "**Caps if the taste fails.** [community]", "**They do not stack five new sleep toys the same week.** [community]", "**Shift workers** still aim relative to *their* night. [community]", "**Waking gasping warrants a clinical assessment,** rather than adding more glycine. [community]" ], "amountsPeopleUse": [ "**Common talk:** **3 g** glycine. [community]", "**X high n=1s:** **10 g.** [anecdote]", "**Timing:** **30–60 min** pre-bed. [community]", "**With mag:** mag glycinate is a separate milligram — see magnesium-night. [community]", "**Cost talk:** pennies per 3 g in bulk. [community]", "**Caps vs powder:** powder is the cheap path. [community]", "**Not a 20 g protein scoop.** Different job. [community]" ], "howPeopleKeepIt": [ "**A jar next to the toothbrush** so it is not a 10 p.m. Amazon hunt. [community]", "**One week before they judge it.** [community]", "**They drop it** if mornings feel heavy or nothing changed. [community]", "**Travel:** a few caps in a bag. [community]", "**They still protect wake time.** [community]", "**A structured sleep treatment:** cognitive behavioral therapy for insomnia (CBT-I) is covered separately. [community]" ], "howItFeels": [ "**First nights:** some feel a little warmer in the hands/feet (the thermostat story); some feel nothing. [community]", "**If they took 10 g:** GI for a subset. [anecdote]", "**Next day:** the papers people paste talk less fatigue in complainers — n=1s are mixed. [trial]", "**Stacked with alcohol:** they still slept badly. The amino is not a beer tax. [community]", "**Phone in bed:** the scoop cannot win. [community]", "**After a week of nothing:** they stop without a manifesto. [community]" ], "howLongPeopleRunIt": [ "**Nightly while they like it.** Nutrient-ish. [community]", "**Not a 30-day challenge badge.** [community]", "**They pause** when testing CBT-I so they know which lever moved. [community]", "**Long-term scoop** is common in the same rooms as mag. [community]" ], "deepDive": [ "**Where it fits in an evening routine:** glycine is an amino-acid supplement, often sold as a relatively inexpensive powder. People describe considering it after changes to screens, room temperature or other products. X posts often discuss a 3-gram amount and a body-temperature explanation. Reports vary; baseline sleep duration alone does not predict who will notice a difference. [community]", "**The papers people paste:** small human studies examine sleep and next-day fatigue alongside a proposed body-temperature mechanism. That evidence does not establish a reliable treatment for persistent insomnia. Cognitive behavioral therapy for insomnia (CBT-I) and appropriate clinical assessment address different needs. Loud snoring, gasping or persistent disruptive symptoms call for assessment rather than adding more powder. [trial]", "**Products with different roles:** magnesium glycinate is a magnesium-containing product rather than an equivalent gram amount of glycine powder. Theanine is another amino acid; melatonin is a different substance; dual orexin receptor antagonists (DORAs) are prescription sleep medicines. Naming these together does not make them interchangeable or a recommended combination. Changing five products in one week makes the response hard to interpret. [community]", "**Travel and shift:** a few caps in a bag beats a 1 kg pouch. Shift workers time it to *their* night, not 10 p.m. on a clock app. Caregivers skip it on the nights they will be up anyway rather than chasing a score. [community]", "**Common problems in the accounts:** copying a 10 g screenshot and reporting gastrointestinal discomfort; buying a blend with only 400 mg of glycine plus many other ingredients; treating a supplement as compensation for alcohol; or changing the powder while leaving a disruptive late-night routine unchanged. The amounts in those stories are not equivalent to the commonly discussed 3 g. [community]", "**A reported routine:** jar by the toothbrush, 3 g mixed into water or taken as capsules, 30–60 minutes before intended bedtime, with a cool room, the phone put away and a consistent wake time. Some accounts compare a week of nights and stop if there is no perceived benefit or mornings feel heavy. This describes reported use, not an established dose or safety test. [community]", "**Limits and next-day function:** a powder cannot diagnose the cause of poor sleep or make alcohol-related disruption harmless. Being an amino-acid supplement does not guarantee alertness or safe driving the next morning; marked tiredness should not be dismissed because the product is sold without a prescription. [community]", "**The body-temperature explanation:** discussions of 3 g glycine often propose increased heat loss through the skin and a lower core temperature as part of the sleep mechanism. A plausible explanation is different from proof that a bedtime scoop improves an individual's sleep. It does not make the supplement equivalent to simply cooling a room. [trial]" ], "watchForLong": [ "**Different from a prescription sleep medicine:** glycine is an amino acid supplement. That distinction does not guarantee alertness or safe driving the next morning. [community]", "**GI at high grams.** [community]", "**Gasping or loud snoring:** discuss assessment with a clinician rather than increasing a sleep supplement. [community]", "**Stacking five sleep supplements** is how they cannot tell what worked. [community]", "**Unclear ingredients:** a mystery blend makes it harder to identify the amount taken or what caused a response. [community]" ], "related": [ "magnesium-night", "sleep-hours", "cool-bedroom", "cbt-i", "screens-before-bed" ], "researchPointer": [ "glycine", "melatonin", "l-theanine" ], "playPointer": null, "forums": [ "r/sleep", "r/Nootropics", "X sleep-stack posts" ], "sources": [ "Kawai / Bannai glycine sleep papers as pasted on X", "r/sleep mag+glycine stacks", "X 3 g glycine sleep posts 2026", "Kawai/Bannai papers as cited in those posts", "r/sleep mag+glycine" ], "disclaimer": "Community talk may be wrong. Not medical or health advice. No result or safety is promised.", "quickAnswerHistory": [ { "field": "communityPicture", "rows": [ "Community posts describe powder or capsules, sometimes alongside magnesium, and compare taste, timing and whether they notice anything. The habit is discussed here; the compound's detailed notes belong in STUDresearch." ] }, { "field": "watchForLong", "rows": [ "**Not a knockout. Not a driving-impairment DORA.** [community]", "**Gasping / loud snoring:** snoring-study card, not more powder. [community]", "**Compound purity** is a Research-adjacent identity fight if they buy mystery caps. [community]" ] }, { "field": "firstLine", "rows": [ "A 3-gram scoop of glycine before bed — the cheap amino people treat as a thermostat, not a knockout." ] }, { "field": "whyLine", "rows": [ "A 3-gram scoop of glycine before bed is the cheap sleep amino people keep next to magnesium." ] }, { "field": "commonPicture", "rows": [ { "lead": "~3 g powder in water", "why": "The number in 2026 X sleep-stack posts. [community]" }, { "lead": "30–60 min before bed", "why": "Not a lights-out shotgun unless they already know it. [community]" }, { "lead": "Often with mag glycinate", "why": "The pair on the night stand. [community]" }, { "lead": "Cheap bulk bag", "why": "The pitch vs a $40 sleep gummy. [community]" }, { "lead": "Cool bedroom still exists", "why": "The amino is not a thermostat for the room. [community]" }, { "lead": "Same wake time still exists", "why": "This card does not replace the clock. [community]" }, { "lead": "Research glycine card is the chemistry", "why": "Self is the bedtime scoop. [community]" }, { "lead": "Higher individual reports: 10 g", "why": "A separate higher amount appears in the X accounts; it is not the same as the common 3 g report. [community]" } ] }, { "field": "whatPeopleSay", "rows": [ "**Not a DORA.** Quviviq / Dayvigo live on STUDresearch. [community]" ] }, { "field": "deepDive", "rows": [ "**Where it sits in the night:** glycine is the cheap powder people add after they already tried screens-down, a cooler room, and magnesium. The 2026 X posts that go around are not a new hormone — they are a 3-gram amino with a thermostat story. People who already sleep 7–9 hours rarely notice it. People who lie awake a little long sometimes do. That split is the honest diary. [community]", "**The papers people paste:** small human nights with glycine and next-day fatigue scores, plus a mechanism story about dumping heat through the skin. Those are labeled [trial] in the amounts/feel notes. They are not a license to skip CBT-I or a snoring study. If someone is wrecked for months, a workbook or a clinician is still the adult door. [trial]", "**Stacks:** mag glycinate is the roommate, not the same molecule. Theanine is the tea amino (Research). Melatonin is a different Research card. DORAs are prescription. This habit card stays the scoop. Mixing five new bottles the same week is how they cannot tell what worked. [community]", "**Fail modes:** 10 g because a screenshot said so, then GI. Buying a mystery ‘sleep amino blend’ with 400 mg glycine and a dozen extras. Using it as permission to drink. Leaving the phone in bed and blaming the powder. [community]", "**Self vs Research:** STUDresearch owns glycine as a compound (collagen, NMDA, sleep papers). STUDself owns the bedtime scoop next to magnesium-night and sleep-hours. Pointers go one way: chemistry over there, habit here. [community]", "**Kept version:** jar by the toothbrush, 3 g, 30–60 minutes pre-bed, cool room, same wake, judge after a week, stop if nothing or if mornings feel heavy. That is the whole product. [community]", "**Who it is for in the rooms:** the person who already does the boring sleep stuff and wants one cheap extra. Not the person whose partner says they stop breathing. Not the person who needs a DORA conversation. Not the person whose only problem is a 1 a.m. feed. [community]", "**Who it is not for:** anyone treating a powder as a diagnosis. Anyone stacking it with alcohol as a tax write-off. Anyone who will drive wrecked in the morning because they added 10 g and stayed up anyway. [community]", "**Kept week in one line:** 3 g, same hour, cool room, phone out, mag optional, no new DORA, no 10 g stunt, judge on a week of nights not one score. Boring is the point. [community]", "**Thermostat lore:** 3 g glycine is framed as helping the body dump heat through skin so core temp drops — the same family as a cool bedroom, not a sedative. [trial]", "**Research map:** glycine the compound (collagen, NMDA talk) lives on STUDresearch. This card is only the night habit. [community]", "**Sleep-hours and cool-bedroom** still do more in most diaries than a new powder. [community]", "**DORA / melatonin** are other doors when this is not the job. [community]", "**Not medical advice.** Insomnia that wrecks weeks is a person and a clinician. [community]" ] }, { "field": "watchFor", "rows": [ "It is not a knockout pill. The compound notes live on STUDresearch. This card is the night habit." ] }, { "field": "howPeopleKeepIt", "rows": [ "**If they need a program, CBT-I is the other card.** [community]" ] }, { "field": "howPeopleRunIt", "rows": [ "**Pair with mag if they already do mag — or don’t.** Two cards. [community]", "**If they wake gasping, they do not add glycine — they look at snoring-study.** [community]" ] } ] }