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  3. Vitamin B12 vs Citrulline

Vitamin B12 vs Citrulline

TL;DR

Quick comparison: Vitamin B12 and Citrulline have 1 overlapping categories and appear together in 5 products.

  • •Choose Vitamin B12 if: Water-soluble vitamin (cobalamin) containing cobalt, essential for DNA synthesis...
  • •Choose Citrulline if: L-Citrulline is a non-essential amino acid named after watermelon (Citrullus lan...
  • •Take both if: You want comprehensive coverage across 1 shared categories.
564 products
analyzed in our comprehensive supplement database
Source: MoodStack Database (2026)

Side-by-Side Comparison

FeatureVitamin B12Citrulline
Typevitaminamino_acid
Common Dosage2.4 mcg daily3-8 g daily (citrulline malate: 6-8 g)
Best BioavailabilityMethylcobalamin (70%)L-Citrulline (88%)
Categories42
Available Products00

Vitamin B12

Typevitamin
Common Dosage2.4 mcg daily
Best BioavailabilityMethylcobalamin (70%)
Categories4
Available Products0

Citrulline

Typeamino_acid
Common Dosage3-8 g daily (citrulline malate: 6-8 g)
Best BioavailabilityL-Citrulline (88%)
Categories2
Available Products0

Can You Take Both?

Yes, Vitamin B12 and Citrulline can typically be taken together. In fact, we found 5 products in our database that contain both supplements, suggesting they complement each other well.

Both supplements share 1 common category, indicating they may work synergistically for similar health goals.

Key Differences

Vitamin B12

Water-soluble vitamin (cobalamin) containing cobalt, essential for DNA synthesis, neurological function, and red blood cell formation.

Categories:

VitalityEnduranceFocus & CognitionStress & Mood

Common Forms:

  • • Methylcobalamin (70% bioavailability)
  • • Hydroxycobalamin (60% bioavailability)
  • • Adenosylcobalamin (50% bioavailability)

Citrulline

L-Citrulline is a non-essential amino acid named after watermelon (Citrullus lanatus). It is converted to L-arginine in the kidneys, making it a more efficient NO booster than arginine itself (arginine undergoes significant first-pass metabolism). One of the most validated pre-workout ingredients for blood flow and endurance.

Categories:

Muscle GainEndurance

Common Forms:

  • • L-Citrulline (88% bioavailability)
  • • Citrulline Malate (L-Citrulline DL-Malate) (85% bioavailability)

Shared Categories

Both Vitamin B12 and Citrulline are used for these health goals:

🏃‍♂️Endurance

Products Containing Both Vitamin B12 and Citrulline

We found 5 products that combine both supplements:

Transparent Labs BULK Pre-Workout

Transparent Labs BULK Pre-Workout

Transparent Labs

$49.99Score: 93/100
Transparent Labs BULK Black Pre-Workout

Transparent Labs BULK Black Pre-Workout

Transparent Labs

$54.99Score: 88/100

THE Pre-Workout

Myprotein

$39.99Score: 84/100
Essential Pre-Workout

Essential Pre-Workout

RAW Nutrition

$27Score: 79/100
Thavage Pre-Workout

Thavage Pre-Workout

RAW Nutrition

$45Score: 69/100

Frequently Asked Questions

What is the difference between Vitamin B12 and Citrulline?

Vitamin B12 and Citrulline are both important supplements with distinct properties. Vitamin B12 Water-soluble vitamin (cobalamin) containing cobalt, essential for DNA synthesis, neurological function, and red blood cell formation., while Citrulline L-Citrulline is a non-essential amino acid named after watermelon (Citrullus lanatus). It is converted to L-arginine in the kidneys, making it a more efficient NO booster than arginine itself (arginine undergoes significant first-pass metabolism). One of the most validated pre-workout ingredients for blood flow and endurance..

Can I take Vitamin B12 and Citrulline together?

Based on our analysis of 5 products that contain both, yes, Vitamin B12 and Citrulline can typically be taken together. However, always consult with a healthcare provider before combining supplements.

Which is more popular: Vitamin B12 or Citrulline?

In our database of 564 products, Vitamin B12 appears in 90 products, while Citrulline appears in 25 products.

Related Comparisons & Products

What is Vitamin B12?What is Citrulline?Creatine Monohydrate vs CitrullineSodium vs CitrullineBetaine vs CitrullineTransparent Labs BULK Pre-Workout (contains both)Transparent Labs BULK Black Pre-Workout (contains both)THE Pre-Workout (contains both)

Medical Disclaimer: This content is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting any supplement regimen.