Alpha-GPC vs Betaine Anhydrous
Nootropic vs Performance · evidence-backed comparison
- • Alpha-GPC has the broader effect profile across the 9 effect categories.
- • Betaine Anhydrous is cheaper per serving ($0.25 vs $0.70).
- • Betaine Anhydrous has a slightly cleaner safety profile.
- • Alpha-GPC has higher bioavailability (better absorption).
Side-by-side traits
| Trait | Alpha-GPC | Betaine Anhydrous |
|---|---|---|
Category | Nootropic | Performance |
Active compound | L-alpha-glycerylphosphorylcholine | Trimethylglycine |
Form available | Capsule, Powder | Powder, Capsule |
Source | synthetic | plant |
Typical dose | 300–600 mg | 2.5 g daily |
Dose range | 300–600 mg | 2.5 g |
Loading protocol | — | — |
Best taken with | with food | with meals |
Best time of day | morning | any |
Bioavailability How efficiently the body absorbs and utilizes the compound. | Very High (5/5) | High (4/5) |
Onset time | Acute: 60–90 min | Cumulative: 2–6 weeks |
Half-life | ~6 hours | ~14 hours |
Evidence level Quality and quantity of human research. | Moderate (some RCTs) | Moderate (some RCTs) |
Overall effect Subjective effect magnitude. | Moderate (3/5) | Moderate (3/5) |
Muscle / strength | Moderate (3/5) | Moderate (3/5) |
Physical energy | Moderate (3/5) | Moderate (3/5) |
Focus / cognition | Very High (5/5) | Low (2/5) |
Mood / stress | Moderate (3/5) | Low (2/5) |
Sleep quality | Low (2/5) | Very Low (1/5) |
Immunity | Very Low (1/5) | Very Low (1/5) |
Recovery Post-exercise recovery support. | Low (2/5) | Moderate (3/5) |
Longevity / healthspan | Moderate (3/5) | Moderate (3/5) |
Safety rating 5 = exceptionally well-tolerated; 1 = significant risk profile. | High (4/5) | Very High (5/5) |
Price per serving Approximate USD per typical daily dose. | $0.70 | $0.25 |
Vegan friendly | Yes | Yes |
Gluten free | Yes | Yes |
3rd-party tested | Yes | Yes |
About Alpha-GPC
The most bioavailable choline source for the brain. Boosts acetylcholine for focus, learning, and athletic power output.
About Betaine Anhydrous
Methyl donor that supports homocysteine recycling and may modestly boost power output. Often paired with creatine in pre-workout formulas.
Vetted brands, third-party testing, ships worldwide.
Vetted brands, third-party testing, ships worldwide.
Alpha-GPC safety
Common side effects:
- • Headache
- • Heartburn
- • Insomnia (high doses)
Avoid if:
- • Stroke history (consult MD)
Drug interactions:
- • Anticholinergics
Betaine Anhydrous safety
Common side effects:
- • Fishy body odor (rare)
Avoid if:
- • Kidney disease
Common uses
- • Focus
- • Memory
- • Power output
- • Cognitive aging
Stacks well with: Caffeine, Lion's Mane Mushroom
Common uses
- • Power output
- • Homocysteine support
- • Liver health
Stacks well with: Creatine Monohydrate, Vitamin B12 (Methylcobalamin)
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Medical disclaimer
SupplementDuel is for educational purposes only and is not medical advice. Consult a physician before starting, stopping, or combining supplements — especially if you are pregnant, breastfeeding, take prescription medication, or have a chronic condition.