Performance Dietary supplementNaHCO3 (Baking Soda)

Sodium Bicarbonate

Baking Soda · Sodium Bicarb · NaHCO3

Evidence: Studied in humans. Example dose: finalize with a provider. Not a fact-check stamp.

0.2-0.3 g/kg (14-21g for 70kg user) – 0.3 g/kg (approx 15-20g) Oral Pre-event or chronic loading

Extracellular pH BufferPerformance Supplement (60-180 sec efforts)

Sodium Bicarbonate (NaHCO3, baking soda) is one of the most-studied performance supplements - alkalizing agent that buffers exercise-induced acidosis in 60-180 second efforts. Mechanism distinct from beta-alanine (intramuscular carnosine) - bicarbonate works extracellularly to buffer hydrogen ions diffusing out of muscle cells.

Quick Start

Route

Oral powder or capsule

Start low

0.2-0.3 g/kg Oral

Frequency

Pre-event or chronic loading

Timing

60-90 min pre-event with carbohydrate

Starting dose. 0.2-0.3 g/kg — 14-21g for 70kg user

60-90 min pre-event.

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Start here. Every protocol below is ordered lowest-first. Begin at the smallest effective dose, hold about a week to assess tolerance, and step up only if needed.

Tiered Protocols · lowest first

Conservative start

0.2-0.3 g/kg (14-21g for 70kg user) · Oral powder or capsule · Pre-event or chronic loading

conservative starter

0.2-0.3 g/kg (14-21g for 70kg user)

Pre-event or chronic loading

Standard

Lactic Acid Buffering

0.3 g/kg (approx 15-20g) · Oral · As needed

human study · McNaughton et al. 2016 (Curr Sports Med Rep)

Must be taken with copious amounts of water.

0.3 g/kg (approx 15-20g)

As needed

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How it works

Sodium Bicarbonate buffers extracellular pH:

Bicarbonate Buffer

HCO3- combines with H+ ions diffusing out of muscle cells to form carbonic acid → CO2 + water (exhaled). Net effect: extracellular pH stays higher.

Time-Domain Specific

Most effective for 60-180 second efforts where lactic acidosis is rate-limiting. Less effective for shorter sprints (<30 sec) or longer endurance (>10 min).

Distinct from Beta-Alanine

Beta-Alanine raises intramuscular carnosine for INTRACELLULAR buffering; bicarbonate works extracellularly. Often combined for additive effect.

Acute Mechanism

Single-dose loading 60-90 min pre-event. Some users adopt chronic loading protocols (multiple smaller doses over days) to reduce acute GI burden.

Sodium Load

Performance dose (~21g) contains ~5.7g sodium - significant for users on sodium restriction.

What to expect

Early

Days 1–7

60-90 min onset for performance.

Mid

Weeks 2–4

Performance window 1-3 hours.

Later

Weeks 4–12

Chronic loading: cumulative buffering over days.

Evidence

HumanStrong

AnimalStrong

In-vitroPresent

Each reference below was re-fetched from its PubMed record, and the quoted sentence was confirmed to appear in that abstract and to support the claim it sits under. Follow any of them to read the source.

Supplementation with sodium bicarbonate (doses from 0.2 to 0.5 g/kg) improves performance in muscular endurance activities, various combat sports, including boxing, judo, karate, taekwondo, and wrestling, and in high-intensity cycling, running, swimming, and rowing.

Supplementation with sodium bicarbonate (doses from 0.2 to 0.5 g/kg) improves performance in muscular endurance activities, various combat sports, including boxing, judo, karate, taekwondo, and wrestling, and in high-intensity cycling, running, swimming, and rowing.

International Society of Sports Nutrition position stand: sodium bicarbonate and exercise performance. Journal of the International Society of Sports Nutrition · 2021 · PMID 34503527

Evidence scope. Sports-nutrition position stand; acute supplementation for exercise, with event-specific efficacy and GI tolerability considerations; the quoted sentence does not itself state route.

Claims we could not support

No abstract we checked supports these for this molecule at this route. That is not the same as saying they are false — it marks where the evidence is missing.

Complete regimen: 0.2-0.3 g/kg (14-21g for 70kg user) via Oral powder or capsule, Pre-event or chronic loading. The verified row supports only the narrower dose/route boundary stated above, not every element of the displayed regimen.

Mechanism: Sodium Bicarbonate buffers extracellular pH: 1. Bicarbonate Buffer: HCO3- combines with H+ ions diffusing out of muscle cells to form carbonic acid → CO2 + water (exhaled). Net effect: extracellular pH stays higher. 2. T. No checked live abstract supported this full mechanistic claim at the card's formulation/route without extrapolation.

Primary safety claim: GI cramping, diarrhea (dose-limiting). No checked live abstract directly established this as the primary concern for the card's exact formulation and regimen.

Side effects & safety

Commonly reported

GI cramping, diarrhea (dose-limiting)
Bloating, belching
Salty taste

Less common & notes

Severe GI distress in some users.
Sodium load relevant for hypertensive users.
Long-term high-dose use may affect calcium balance.

Pharmacokinetics

Illustrative plasma concentration · 17 h

Half-life

Plasma bicarbonate buffer 1-3 hours

Peak · Tmax

60-90 min

Post-ingestion

Elimination

Performance window 1-3 hours

Bioavailability

Oral high

Duration of action

1-3 hours

Per dose

Clearance

Renal

Storage. Powder. Cool dry location, hygroscopic.

Regulatory status

Dietary supplement / OTC. Pharmaceutical USP grade also available.

Put it to work

Calculate, log & track

Open Sodium Bicarbonate straight into OnePin with your vial and dose pre-filled, then let it handle the syringe math and remind you before the vial runs out.

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Go deeper

The guide & community

The complete Sodium Bicarbonate walkthrough, real protocol discussion and coaching live inside the BlessUp community on Skool.

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