Compare Supplements

Side-by-side comparison of 2 supplements

Gly8.5

Glycine

High safety

Mel9.0

Melatonin

High safety

Evidence

Evidence Score8.5/10

Studies: 26

Meta-analyses: 11

Evidence Score9/10

Studies: 53

Meta-analyses: 30

Outcome Grades

Fall asleep fasterB

Fix sleep schedule / jet lagB

Improve deep sleep qualityA

Stay asleep longerC

Healthy agingC

Fall asleep fasterA

Fix sleep schedule / jet lagA

Improve deep sleep qualityB

Stay asleep longerB

Healthy agingC

A-F grade per outcome, combining overall evidence with goal-specific relevance. A = strong evidence; F = insufficient. Hover a badge for details.

Dosage & timing

Dosage:

Best Time:

Before bed

Can take on empty stomach

Form:

Powder (dissolves easily, tastes sweet)

Dosage:

1mg

Best Time:

Before bed

Can take on empty stomach

Form:

Immediate-release tablet or sublingual

What you'll notice

😴 Deeper Sleep85%

First night

⚡ Less Daytime Fatigue75%

Next morning

🌙 Faster Sleep Onset70%

First night

⏱️ Faster Sleep Onset85%

Same night

✈️ Jet Lag Relief90%

1-3 days

😵 Morning Grogginess30%

Next morning

Safety

High safety

Contraindications:

Clozapine users (glycine may affect drug efficacy)

Drug Interactions:

Clozapine
Other sleep aids

Side Effects:

GI discomfortVivid dreams

High safety

Contraindications:

Autoimmune disorders (may stimulate immune activity)
Seizure disorders (consult doctor)

Drug Interactions:

Blood thinners
Immunosuppressants
Sedatives/CNS depressants

Side Effects:

Morning drowsinessHeadacheVivid dreams/nightmares

Works well with

stacks-well

complementary

stacks-well

complementary

stacks-well

complementary

How they work together

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