Midnight Blend

Midnight Blend is a vendor-made, ready-to-use injectable sleep blend of melatonin, GABA, taurine, L-histidine and L-theanine sold as a research liquid in 20 mL vials.

Educational summaryAmino formulation reference

(how we review)

Reported protocols for Midnight Blend

What published studies and recent community write-ups report about amounts, timing and course length. 4 clinical and 3 community-reported rows, each linked to its source. These are descriptions of what others report, not instructions, and nothing here is medical advice.

ContextDoseFrequencyRouteCourseSource
Clinical4 rows
Ingredient: melatonin, meta-analysis of 19 placebo-controlled trials1,683 adults and children with primary sleep disorders0.3-5 mg per night in most trials (0.05-0.15 mg/kg in one pediatric trial)Nightly before bedOral7 days to 26 weeksNot applicablePLoS One (PubMed)2013
Melatonin shortened time to fall asleep by about 7 minutes and lengthened total sleep by about 8 minutes compared with placebo, with a small improvement in sleep quality that did not fade with continued use. The authors call the effect modest and smaller than prescription hypnotics, and all of the trials used oral melatonin.
Ingredient: GABA, randomized trial in insomnia40 adults with insomnia symptoms (30 GABA, 10 placebo)300 mg GABA from fermented rice germOnce dailyOral4 weeksNot applicableJournal of Clinical Neurology (PubMed)2018
Polysomnography showed sleep latency falling from 13.4 to 5.7 minutes and sleep efficiency rising from 79% to 86% in the GABA group only, with mild adverse events in 10% of participants. The trial was small, unevenly randomized and used a food-derived oral extract, and whether oral or injected GABA reaches the brain in meaningful amounts remains unsettled.
Ingredient: L-theanine, randomized crossover trial30 healthy adults, mean age 48, without major psychiatric illness200 mgOnce dailyOral tablets4 weeks per arm, with a 2-week washout between theanine and placeboNot applicableNutrients (PubMed)2019
Sleep quality scores, trait anxiety and depression ratings improved after theanine, with the sleep latency and sleep disturbance sub-scores better than on placebo. Cognitive gains were limited to verbal fluency and executive function, mainly in people who started below the median, and the sample was small.
Ingredient: taurine, meta-analysis of human dosing (exercise studies, not sleep)116 participants across 10 endurance-exercise studies1-6 g per doseSingle doses or daily for up to 2 weeksOralAcute to 2 weeksNot applicableSports Medicine (PubMed)2018
Taurine produced a small improvement in endurance performance whether taken once or for two weeks, with no dose effect across the 1-6 g range. These are the main controlled human taurine data; no human trial of taurine for sleep was found, so the sleep role claimed for the blend's taurine rests on animal and cell work.
Community-reported3 rows
Comparable five-ingredient sleep blend (Lights Out), community handbook0.25 mL to start, worked up to 1 mL (the blend lists GABA 100 mg, histidine 100 mg, theanine 50 mg, taurine 100 mg and melatonin 2 mg per mL)Nightly, about 30 minutes before bedIntramuscular, which the author prefers over subcutaneous for all amino blendsNot statedNone describedCommunity resource2025
A January 2025 handbook covers a rival product with the same five ingredients at higher concentrations and tells readers to start at a quarter millilitre because several users reported shortness of breath after the injection, which the author attributes to the GABA. It warns that the blend causes strong tiredness and that driving afterwards should be avoided; these are one writer's observations, not study data.
Third-party listing of per-millilitre content and storage1 mL contains histidine 75 mg, GABA 75 mg, taurine 75 mg, theanine 35 mg and melatonin 1.25 mgNot stated in the storage guideReady-to-use liquid; route not statedVial used within 30 days of first punctureNot statedCommunity resource2025
A December 2025 storage guide reproduces the manufacturer's ingredient list for Midnight Blend and relays its instruction to keep the vial at room temperature (68-77 F) in the dark rather than refrigerate it. The guide is written by an affiliate of the vendors it covers and gives no dosing or outcome information.

How a course is commonly described

  1. First nightsCommunity-reported

    The community handbook for a comparable blend starts at 0.25 mL injected into a muscle about 30 minutes before bed, because of reports of shortness of breath and heavy sedation, and the legacy sheet for Midnight Blend itself begins at 0.5 mL an hour before sleep with a warning about hot flashes.

  2. Working upCommunity-reported

    The dose is raised toward 1 mL per night over subsequent nights if the smaller volume is tolerated, which at the listed concentration means 1.25 mg melatonin, 75 mg each of GABA, taurine and histidine and 35 mg theanine. Vials are described as room-temperature stable and used within 30 days of first puncture.

  3. Clinical comparisonClinical

    The oral trials behind the ingredients ran nightly for four weeks (300 mg GABA, 200 mg theanine) or from one week to six months (0.3-5 mg melatonin), and measured sleep with polysomnography or questionnaires. None used injections, none combined the ingredients and none describes a titration.

  • Every dosing figure for the blend comes from vendors and community writers. No trial has tested injected melatonin, GABA, theanine, taurine or histidine for sleep, alone or together, and the blend has no regulatory approval.
  • At the listed concentration, 1 mL supplies 1.25 mg melatonin, inside the 0.3-5 mg range used in oral trials, but injection bypasses first-pass metabolism, so oral trial doses do not translate directly.
  • Community reports of shortness of breath, heavy sedation and hot flashes after sleep blends of this type are anecdotal and unexplained; the start-low approach in the handbook exists because of them.
Sources for this section (7)
  1. Meta-analysis: melatonin for the treatment of primary sleep disordersPLoS One (PubMed)2013Clinical
  2. Safety and Efficacy of Gamma-Aminobutyric Acid from Fermented Rice Germ in Patients with Insomnia Symptoms: A Randomized, Double-Blind TrialJournal of Clinical Neurology (PubMed)2018Clinical
  3. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled TrialNutrients (PubMed)2019Clinical
  4. The Effects of an Oral Taurine Dose and Supplementation Period on Endurance Exercise Performance in Humans: A Meta-AnalysisSports Medicine (PubMed)2018Clinical

Plus 3 community resources (dosing guides, forum threads and vendor write-ups), reported above but not linked.

Overview

Midnight Blend is a vendor-made, ready-to-use injectable sleep blend of melatonin, GABA, taurine, L-histidine and L-theanine sold as a research liquid in 20 mL vials. The legacy sheet lists no amounts per millilitre and describes 0.5-1 mL about an hour before sleep with a warning about mild hot flashes; a 2025 third-party storage guide lists the same product at 75 mg histidine, 75 mg GABA, 75 mg taurine, 35 mg theanine and 1.25 mg melatonin per mL, stored at room temperature. Melatonin is an over-the-counter oral supplement in the United States and has placebo-controlled trial data for sleep, GABA and theanine each have small oral sleep trials, but no study has tested this combination, no injectable form of any of these ingredients is approved for sleep, and the only dosing descriptions are from vendors and community writers.

What researchers are exploring

These themes organize the educational information currently available. Individual claims remain under source review and are not treatment claims.

  • 1

    Melatonin

    Central regulator of circadian rhythm and sleep initiation. Molecular Formula: C 13 H 16 N 2 O 2 Molecular Weight: 232.28 g/mol

  • 2

    GABA (Gamma-Aminobutyric Acid)

    Primary inhibitory neurotransmitter in the central nervous system. Molecular Formula: C 4 H 9 NO 2 Molecular Weight: 103.12 g/mol

  • 3

    L-Taurine

    Contributes to cellular osmoregulation and muscle protection. Molecular Formula: C 2 H 7 NO 3 S / NH 2 CH 2 CH 2 SO 3 H Molecular Weight: 125.15 g/mol

  • 4

    Histidine

    Precursor to histamine, potentially balancing arousal-sleep transitions depending on context. Molecular Formula: C 6 H 9 N 3 O 2 Molecular Weight: 155.15 g/mol

  • 5

    L-Theanine

    Amino acid known for promoting calm alertness and reducing stress responses. Molecular Formula: C 7 H 14 N 2 O 3 Molecular Weight: 174.20 g/mol

  • 6

    Research

    THIS PRODUCT IS INTENDED AS A RESEARCH CHEMICAL ONLY. It is provided exclusively for in vitro testing and laboratory research. All product information is for educational use only, and any human or animal administration…

What is known and what still needs verification

Available context is organized without assigning unsupported study models or evidence grades.

  • Not graded

    Melatonin

    Central regulator of circadian rhythm and sleep initiation. Molecular Formula: C 13 H 16 N 2 O 2 Molecular Weight: 232.28 g/mol

  • Not graded

    GABA (Gamma-Aminobutyric Acid)

    Primary inhibitory neurotransmitter in the central nervous system. Molecular Formula: C 4 H 9 NO 2 Molecular Weight: 103.12 g/mol

Limitations and unknowns

Important limitations

  • Individual claims and source links have not yet completed editorial verification.
  • Evidence level, applicable study model, formulation, route and population remain unassigned.

Sources

1 link carried over from the earlier page, awaiting verification.

  1. Source link (pmc.ncbi.nlm.nih.gov)Verification pendingNot graded

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