Betaine Anhydrous vs Methylfolate (5-MTHF)

Performance vs Vitamin · evidence-backed comparison

Quick take
  • Methylfolate (5-MTHF) has the stronger evidence base (strong (multiple rcts / meta-analyses)).
  • Betaine Anhydrous has the broader effect profile across the 9 effect categories.
  • Methylfolate (5-MTHF) is cheaper per serving ($0.22 vs $0.25).
  • Betaine Anhydrous has a slightly cleaner safety profile.
  • Methylfolate (5-MTHF) has higher bioavailability (better absorption).

Side-by-side traits

TraitBetaine AnhydrousMethylfolate (5-MTHF)
Category
PerformanceVitamin
Active compound
TrimethylglycineL-5-methyltetrahydrofolate
Form available
Powder, CapsuleCapsule, Tablet
Source
plantsynthetic
Typical dose
2.5 g daily400–1000 mcg daily
Dose range
2.5 g400–1000 mcg
Loading protocol
Best taken with
with mealswith food
Best time of day
anymorning
Bioavailability
How efficiently the body absorbs and utilizes the compound.
High (4/5)Very High (5/5)
Onset time
Cumulative: 2–6 weeksCumulative: 4–8 weeks
Half-life
~14 hours~3 hours
Evidence level
Quality and quantity of human research.
Moderate (some RCTs)Strong (multiple RCTs / meta-analyses)
Overall effect
Subjective effect magnitude.
Moderate (3/5)Low (2/5)
Muscle / strength
Moderate (3/5)Very Low (1/5)
Physical energy
Moderate (3/5)Moderate (3/5)
Focus / cognition
Low (2/5)Moderate (3/5)
Mood / stress
Low (2/5)High (4/5)
Sleep quality
Very Low (1/5)Very Low (1/5)
Immunity
Very Low (1/5)Low (2/5)
Recovery
Post-exercise recovery support.
Moderate (3/5)Very Low (1/5)
Longevity / healthspan
Moderate (3/5)Moderate (3/5)
Safety rating
5 = exceptionally well-tolerated; 1 = significant risk profile.
Very High (5/5)High (4/5)
Price per serving
Approximate USD per typical daily dose.
$0.25$0.22
Vegan friendly
YesYes
Gluten free
YesYes
3rd-party tested
YesYes

About Betaine Anhydrous

Methyl donor that supports homocysteine recycling and may modestly boost power output. Often paired with creatine in pre-workout formulas.

Active compound: Trimethylglycine
Forms: Powder, Capsule
Onset: Cumulative: 2–6 weeks
powermethylationliverhomocysteine

About Methylfolate (5-MTHF)

Pre-methylated folate that bypasses MTHFR variants. Essential during pregnancy and for treatment-resistant depression with low folate.

Active compound: L-5-methyltetrahydrofolate
Forms: Capsule, Tablet
Onset: Cumulative: 4–8 weeks
moodMTHFRpregnancyhomocysteine

Betaine Anhydrous safety

Common side effects:

  • Fishy body odor (rare)

Avoid if:

  • Kidney disease

Methylfolate (5-MTHF) safety

Common side effects:

  • Anxiety / irritability (over-methylation)
  • Insomnia (PM use)

Avoid if:

  • Bipolar disorder

Drug interactions:

  • Methotrexate
  • Antiseizure meds

Common uses

  • Power output
  • Homocysteine support
  • Liver health

Stacks well with: Creatine Monohydrate, Vitamin B12 (Methylcobalamin)

Common uses

  • Pregnancy
  • MTHFR variants
  • Depression
  • Homocysteine

Stacks well with: Vitamin B12 (Methylcobalamin), Betaine Anhydrous

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.