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NaturalRest Plus+

Trace Minerals Research
4.6
★ ★ ★ ★ ★
(19 ratings)
GABA 150 mg
Sulfur 10 mg
Product Image
Score57
A modest calming blend with useful GABA and magnesium, but opaque supporting blends weaken confidence.
How scoring works
Quantity:60 Tablet(s) • (30 servings)
Goals:
Stress Relief
Sleep Support

Score 57

A modest calming blend with useful GABA and magnesium, but opaque supporting blends weaken confidence.
How scoring works
$19.99($0.66 per serving)
iHerb
$ 0.00
Vitacost
$ 19.99
Walmart
$ 19.99
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Analysis

The tablet supplies 150 mg of GABA, 45 mg of magnesium, and 25 mg of L-theanine. Those amounts may support relaxation, but theanine is light compared with many focused formulas and oral GABA effects can vary.

An herbal blend, ionic trace-mineral blend, and enzyme complex do not disclose their individual components or activities. That missing detail limits evaluation of effectiveness, tolerance, and interaction risk.

Two-tablet dosing is convenient enough for occasional evening use. People wanting a simpler sleep product can find clearer formulas with fully identified botanicals and stronger theanine support.

Who is it for
  • Adults seeking mild evening relaxation support
  • People comfortable with a multi-ingredient tablet
  • Occasional users who tolerate GABA
Best for
  • Relaxation support
  • Evening mineral intake
  • Users wanting GABA with magnesium

Pros

  • Clearly states GABA and theanine amounts
  • Includes magnesium citrate
  • Adds several electrolytes

Cons

  • Three blends lack full disclosure
  • Theanine amount is modest
  • Weak value for GABA alone

Warnings

  • GABA and calming herbs may increase drowsiness when combined with sedatives or alcohol
  • The hidden herbal blend prevents complete medication-interaction screening
  • Magnesium citrate may loosen stools in sensitive users

Nutrient quality

65 Moderate impact

Magnesium citrate, GABA, and L-theanine fit a calming formula, but their amounts are modest. A hidden herbal blend and low-priority enzyme and trace-mineral additions weaken depth and focus.

Ingredient transparency

54 Moderate impact

GABA, L-theanine, and minerals have amounts, but the herbal blend hides its components and doses. Ionic trace minerals and the enzyme complex also lack useful composition or potency details.

Customer satisfaction

65 Moderate impact

The strong average rating has a very small review base. No review excerpts describe taste, tolerance, ease of use, or repeated complaints, so those experiences remain uncertain.

Value for money

43 Lower impact

A modest serving cost is difficult to judge favorably because core calming doses are light and the herbal blend is opaque. Enzymes and broad mineral additions add little measurable sleep value.

Report analysis

Goals

Stress Relief
Stress Relief
Impact
High effect
B Goal FitD Strength of SupportB- CoverageC+ Formula Quality
Magnesium · 45 mgGABA · 150 mgTheanine · 25 mg

GABA, L-theanine, magnesium, and herbs directly target inhibitory signaling and relaxation. L-theanine has relevant human evidence, while orally consumed GABA and the hidden herbs have more uncertain effects.

The 150 mg GABA amount is reasonable for a blend, but 25 mg L-theanine and 45 mg magnesium are low. GABA is quantified, yet the herbal, trace-mineral, and enzyme blends hide their individual ingredients and amounts.

Study evidence
GABA Supportive 6 studies
Magnesium Supportive 13 studies
Theanine Supportive 16 studies
Sleep Support
Sleep Support
Impact
Moderate effect
B- Goal FitD- Strength of SupportC- CoverageC- Formula Quality
Magnesium · 45 mgTheanine · 25 mg

GABA provides a reasonable calming amount, while magnesium, L-theanine, and an herbal blend add several sleep-related pathways. The overall design is clearly aimed at nighttime relaxation.

Magnesium and L-theanine are underdosed, and the herbal blend hides individual ingredients and amounts. Broad pathway claims therefore lack enough depth and transparency for reliable sleep support.

Study evidence
GABA Supportive 4 studies
Magnesium Supportive 23 studies
Theanine Supportive 8 studies

Ingredients

IngredientAmount per serving
Calories
5 {Calories}
Total Carbohydrates
1 Gram(s)
Magnesium (ITM, Magnesium Citrate)
 45 mg
Chloride (ITM, Potassium Chloride)
 185 mg
Sodium (ITM, Sodium Citrate)
 50 mg
Potassium (ITM, Potassium Chloride)
 55 mg
Herbal Blend
237 mg
Ionic Trace Minerals
275 mg
GABA
150 mg
L-Theanine (Gamma-Ethylamino-L-Glutamic Acid)
 25 mg
Sulfate (ITM)
 10 mg
Enzyme Complex:
13.4 mg
Boron (Boron Citrate, ITM)
 350 mcg
Gluten Free Adults 18–50 Vegan No Allergies Vegetarian
Report overview
GABA · 150 mg OverallScore67
C+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyD- Value

The clearly disclosed 150 mg GABA dose is reasonable in a multi-ingredient relaxation blend, although the source is not identified as premium or fermented. A hard-pressed tablet offers ordinary delivery, and the supporting mineral and herbal blends are only partly characterized. Value remains weak for the amount and source of GABA provided, despite a lower serving cost than the other evaluated products.

View ingredientView products
Sulfur (ITM) · 10 mg OverallScore64
B- Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyD+ Value

The sulfate is identified as part of an ionic trace mineral complex. The 10 mg sulfate amount provides a lower maintenance dose. The lower sulfur dose weakens the value delivered per serving.

View ingredientView products
Loading alternative details
85 Performance

Pharma GABA 250 mg

Natural Factors Stress-Relax
<p>A meaningful fermented branded GABA amount provides better-defined relaxation support than the original’s generic GABA and opaque herbal blend. The focused formula omits magnesium and theanine, but ingredient identity and potency are easier to assess.</p>
84 Performance

GABA 500 mg

NOW
<p>A substantial GABA amount with a small relevant vitamin cofactor gives clearer calming depth than the original’s modest GABA and low theanine. Generic sourcing and uncertain brain availability remain trade-offs, but the simple formula avoids hidden herbal and enzyme blends.</p>
83 Performance

GABA 500 mg

Swanson
<p>A well-centered GABA amount provides more direct calming support than the original’s diluted multi-ingredient design. The single active is clearly disclosed, though variable oral response and possible drowsiness limit predictable sleep benefits.</p>
84 Budget

GABA

NOW
<p>A substantial standalone GABA amount provides more focused relaxation support at a much lower serving cost than the original blend. The liquid format allows flexible use, although generic sourcing and uncertain oral brain availability remain limitations.</p>
81 Budget

GABA Powder

Source Naturals Serene Science
<p>An upper-range GABA amount offers deeper single-ingredient calming support at a small fraction of the original serving cost. Ordinary oral GABA has variable effects and may cause drowsiness, so it should not be combined casually with alcohol or other sedating products.</p>
83 Budget

GABA 500 mg

Nutricost
<p>A clearly stated GABA amount gives the formula a simpler and more economical calming strategy than the original’s modest GABA, low theanine, and hidden herbal blend. It does not provide magnesium or theanine, and ordinary oral GABA has uncertain access to the brain.</p>
81 Value

GABA 750 mg

Source Naturals Serene Science
<p>An upper-range GABA amount delivers much more calming active per serving than the original at very low cost. The simple powder avoids hidden blends, but ordinary oral GABA has uncertain brain availability and may cause drowsiness.</p>
82 Value

GABA 250 mg

Nature's Way
<p>A practical GABA amount provides concise relaxation support at a substantially lower serving cost than the original. It lacks magnesium and theanine, yet the disclosed single active is easier to evaluate than a formula with an opaque herbal blend.</p>
81 Value

GABA Gamma Aminobutyric Acid 250 mg

Swanson Premium Brand
<p>A useful standalone GABA amount offers focused calming support and favorable value without the original’s unclear herbal and enzyme additions. Generic sourcing and variable oral effects prevent a firm effectiveness prediction, but the formula is transparent and uncluttered.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Oral intake of γ-aminobutyric acid affects mood and activities of central nervous system during stressed condition induced by mental tasks.
    Yoto A; Murao S; Motoki M; Yokoyama Y; Horie N; Takeshima K; Masuda K; Kim M; Yokogoshi H · Amino acids · 2012
    Randomized trial63 participantsStress Relief forGABA
  2. GABA Supplementation, Increased Heart-Rate Variability, Emotional Response, Sleep Efficiency and Reduced Depression in Sedentary Overweight Women Undergoing Physical Exercise: Placebo-Controlled, Randomized Clinical Trial.
    Guimarães AP; Seidel H; Pires LVM; Trindade CO; Baleeiro RDS; Souza PM; Silva FGDE; Coelho DB; Becker LK; Oliveira EC · Journal of dietary supplements · 2024
    Randomized trial30 participantsStress Relief Sleep Support forGABA
  3. Cortical gamma-aminobutyric acid and glutamate in posttraumatic stress disorder and their relationships to self-reported sleep quality.
    Meyerhoff DJ; Mon A; Metzler T; Neylan TC · Sleep · 2014
    Case-control study45 participantsStress Relief forGABA
  4. Comparison of the effects of two amino acids, Gamma-aminobutyric acid (GABA) and L-theanine, on sedation, anxiety, and cognition in preoperative surgical patients - A randomized controlled study.
    Deshpande SS; Kurdi M; Baiju A; Athira AS; Sarasamma AG; Gangadharan AK · Journal of anaesthesiology, clinical pharmacology · 2025
    Randomized trial168 participantsStress Relief forGABA Stress Relief forTheanine
  5. Safety and Efficacy of Gamma-Aminobutyric Acid from Fermented Rice Germ in Patients with Insomnia Symptoms: A Randomized, Double-Blind Trial.
    Byun JI; Shin YY; Chung SE; Shin WC · Journal of clinical neurology (Seoul, Korea) · 2020
    Randomized trial40 participantsSleep Support forGABA
  6. Analysis of the Effects of Known Sleep-Support Supplements in Relation to Life Habits, Sleep Conditions, and Sleep Problems.
    Imafuku F; Yamamoto K; Tanaka E; Aoki R; Nishino S · Nutrients · 2023
    Randomized trial160 participantsSleep Support forGABA
  7. Reduced γ-aminobutyric acid in occipital and anterior cingulate cortices in primary insomnia: a link to major depressive disorder?
    Plante DT; Jensen JE; Schoerning L; Winkelman JW · Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2012
    Case-control study40 participantsSleep Support forGABA
  8. Effects of magnesium and potassium supplementation on insomnia and sleep hormones in patients with diabetes mellitus.
    Khalid S; Bashir S; Mehboob R; Anwar T; Ali M; Hashim M; Waseem H; Basharat S · Frontiers in endocrinology · 2024
    Randomized trial320 participantsSleep Support forMagnesium
  9. Association of magnesium intake with sleep duration and sleep quality: findings from the CARDIA study.
    Zhang Y; Chen C; Lu L; Knutson KL; Carnethon MR; Fly AD; Luo J; Haas DM; Shikany JM; Kahe K · Sleep · 2022
    Cohort study3,964 participantsSleep Support forMagnesium
  10. Lidocaine vs. magnesium: effect on analgesia after a laparoscopic cholecystectomy.
    Saadawy IM; Kaki AM; Abd El Latif AA; Abd-Elmaksoud AM; Tolba OM · Acta anaesthesiologica Scandinavica · 2010
    Randomized trial120 participantsSleep Support forMagnesium
  11. The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial.
    Abbasi B; Kimiagar M; Sadeghniiat K; Shirazi MM; Hedayati M; Rashidkhani B · Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2013
    Randomized trial46 participantsSleep Support forMagnesium
  12. A randomized, double-blind, placebo-controlled, multicenter study assessing the efficacy of magnesium oxide monohydrate in the treatment of nocturnal leg cramps.
    Barna O; Lohoida P; Holovchenko Y; Bazylevych A; Velychko V; Hovbakh I; Bula L; Shechter M · Nutrition journal · 2021
    Randomized trial175 participantsSleep Support forMagnesium
  13. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
    Hidese S; Ogawa S; Ota M; Ishida I; Yasukawa Z; Ozeki M; Kunugi H · Nutrients · 2020
    Randomized trial30 participantsSleep Support forTheanine
  14. Comparison Between Efficacy of Oral Melatonin and Oral L-theanine in Improving Sleep in Cancer Patients Suffering From Insomnia: A Randomised Double-blinded Placebo-controlled Study.
    Kurdi MS; As A; Ladhad DA; Mitragotri MV; Baiju A · Indian journal of palliative care · 2024
    Randomized trial120 participantsSleep Support forTheanine
  15. The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis.
    Bulman A; D'Cunha NM; Marx W; Turner M; McKune A; Naumovski N · Sleep medicine reviews · 2025
    Meta-analysis897 participants19 studies pooledSleep Support forTheanine
  16. In Search of a Safe Natural Sleep Aid.
    Rao TP; Ozeki M; Juneja LR · Journal of the American College of Nutrition · 2016
    Narrative reviewSleep Support forTheanine
  17. L-theanine in the adjunctive treatment of generalized anxiety disorder: A double-blind, randomised, placebo-controlled trial.
    Sarris J; Byrne GJ; Cribb L; Oliver G; Murphy J; Macdonald P; Nazareth S; Karamacoska D; Galea S; Short A; Ee C; Birling Y; Menon R; Ng CH · Journal of psychiatric research · 2020
    Randomized trial46 participantsSleep Support forTheanine
  18. Relieving occupational fatigue by consumption of a beverage containing γ-amino butyric acid.
    Kanehira T; Nakamura Y; Nakamura K; Horie K; Horie N; Furugori K; Sauchi Y; Yokogoshi H · Journal of nutritional science and vitaminology · 2011
    Clinical trial30 participantsStress Relief forGABA
  19. Role of magnesium supplementation in the treatment of depression: A randomized clinical trial.
    Tarleton EK; Littenberg B; MacLean CD; Kennedy AG; Daley C · PloS one · 2017
    Randomized trial126 participantsStress Relief forMagnesium
  20. Effects of Intravenous Esketamine or Magnesium Sulfate on Early Postoperative Negative Emotions and Pain in Patients Undergoing Endoscopic Sinus Surgery: A Randomized Controlled Trial.
    Wang L; Zhou J; Liu Q; Qian K; Wang L; Xie C · Therapeutics and clinical risk management · 2026
    Randomized trial137 participantsStress Relief forMagnesium
  21. Effect of short-term magnesium supplementation on anxiety, depression and sleep quality in patients after open-heart surgery.
    Saba S; Faizi F; Sepandi M; Nehrir B · Magnesium research · 2022
    Non-randomized trial60 participantsStress Relief forMagnesium
  22. Effects of dry needling compared to magnesium infiltration in trigger points for patients with myofascial pain syndrome: a randomized controlled study in Tunisia.
    Dhouibi J; Moncer R; Kalbousi N; Gaddour M; Laayouni S; Ouanes W; Kacem B; Jemni S · Korean journal of family medicine · 2026
    Randomized trial45 participantsStress Relief forMagnesium
  23. Effect of magnesium and vitamin B6 supplementation on mental health and quality of life in stressed healthy adults: Post-hoc analysis of a randomised controlled trial.
    Noah L; Dye L; Bois De Fer B; Mazur A; Pickering G; Pouteau E · Stress and health : journal of the International Society for the Investigation of Stress · 2021
    Randomized trialStress Relief forMagnesium
  24. Anti-Stress, Behavioural and Magnetoencephalography Effects of an L-Theanine-Based Nutrient Drink: A Randomised, Double-Blind, Placebo-Controlled, Crossover Trial.
    White DJ; de Klerk S; Woods W; Gondalia S; Noonan C; Scholey AB · Nutrients · 2016
    Randomized trial34 participantsStress Relief forTheanine
  25. L-theanine relieves positive, activation, and anxiety symptoms in patients with schizophrenia and schizoaffective disorder: an 8-week, randomized, double-blind, placebo-controlled, 2-center study.
    Ritsner MS; Miodownik C; Ratner Y; Shleifer T; Mar M; Pintov L; Lerner V · The Journal of clinical psychiatry · 2011
    Randomized trial60 participantsStress Relief forTheanine
  26. Safety and Efficacy of AlphaWave® L-Theanine Supplementation for 28 Days in Healthy Adults with Moderate Stress: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Moulin M; Crowley DC; Xiong L; Guthrie N; Lewis ED · Neurology and therapy · 2024
    Randomized trial30 participantsStress Relief forTheanine
  27. A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave® L-Theanine on Stress in a Healthy Adult Population.
    Evans M; McDonald AC; Xiong L; Crowley DC; Guthrie N · Neurology and therapy · 2021
    Randomized trialStress Relief forTheanine