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Compound Deep-Dive

Tier 1: MainstreamA foundational metabolic nutrient that is highly effective for energy and nerve health, especially in those with high sugar intake.

Vitamin B1 (Thiamine)

ThiaminBenfotiamineTTFDAllithiamineSulbutiamine

The spark plug of metabolism

Hype Risk

2/10

Noticeability

7/10

Evidence Tier

Strong

Cost / Month

~$12

Mainstream compound

What it's actually good for

Energy

Research Supported

Directly involved in the Krebs cycle for ATP production.

Focus

Mixed Evidence

Improves cognitive clarity primarily in those with subclinical deficiency.

Mood

Research Supported

Deficiency is a known cause of irritability and mental fatigue.

Sleep: neutralMuscle: neutralRecovery: neutralLongevity: neutralImmunity: neutral

How it works

Essential for carbohydrate metabolism and neurological health. Strong evidence supports its role in energy production and preventing nerve damage, particularly in those with high glucose intake or alcohol use.

Acts as a critical cofactor for enzymes like pyruvate dehydrogenase, enabling the conversion of glucose into cellular energy (ATP).

Safety

  • Extremely safe with no established upper limit.
  • High doses are water-soluble and excreted if not needed.
  • May cause mild GI upset in rare cases.

The full StackRoast report adds

  • The exact dose, timing, and effective range to actually run it at
  • Where people go wrong with it — the dose-creep and timing traps
  • What Vitamin B1 (Thiamine) clashes with or duplicates in your stack
  • Which brands are actually worth buying
Roast My Stack →

Community Reality Check

Distilled from 2500 threads
Confidence: high

What users report

  • Rapid reduction in brain fog
  • Improved exercise tolerance
  • Neuropathy relief

The catch

  • Paradoxical start-up reactions
  • No effect if already sufficient

Side effects reported

  • Insomnia if taken late
  • Mild anxiety during initial dosing
https://www.reddit.com/r/Supplementshttps://www.reddit.com/r/B1Deficiency

The Receipts

8 sources— studies, videos & links

Videos

Use THIS B-VITAMIN Before Eating Carbs

Thomas DeLauer

Explains how B1 mitigates damage from high glucose spikes.

High Dose Thiamine (B1) for Chronic Fatigue

Elliot Overton

Deep dive into therapeutic megadosing for energy disorders.

Papers

Creators

Thomas DeLauer

YouTube

Focuses on metabolic health and nutrient timing.

Elliot Overton

YouTube

Specialist in thiamine therapy and nutritional biochemistry.

Clinical Sources

Taking Vitamin B1 (Thiamine) in a stack? Find out if the combination actually makes sense.

Roast My Stack →