Comparison
Caffeine vs Vitamin B12
TL;DR
Quick comparison: Caffeine and Vitamin B12 have 2 overlapping categories and appear together in 11 products.
- Choose Caffeine if: Caffeine boosts alertness and focus by stimulating the central nervous system, e...
- Choose Vitamin B12 if: Water-soluble vitamin (cobalamin) containing cobalt, essential for DNA synthesis...
- Take both if: You want comprehensive coverage across 2 shared categories.
565 products
analyzed in our comprehensive supplement database
Source · MoodStack Database (2026)
Side-by-side comparison
| Feature | Caffeine | Vitamin B12 |
|---|---|---|
| Type | alkaloid | vitamin |
| Common Dosage | N/A | 2.4 mcg daily |
| Best Bioavailability | Caffeine Anhydrous (99%) | Methylcobalamin (70%) |
| Categories | 3 | 4 |
| Available Products | 0 | 0 |
Caffeine
Vitamin B12
Can you take both?
Yes, Caffeine and Vitamin B12 can typically be taken together. In fact, we found 11 products in our database that contain both supplements, suggesting they complement each other well.
Both supplements share 2 common categories, indicating they may work synergistically for similar health goals.
Key differences
Option A
Caffeine
Caffeine boosts alertness and focus by stimulating the central nervous system, enhances physical performance, and may improve mood. It supports metabolism and fat burning, potentially aiding weight management. Coffee, tea, and energy drinks are common sources.
Categories
Common forms
- Caffeine Anhydrous · 99% bioavailability
- Di-Caffeine Malate · 95% bioavailability
- Caffeine (as Green Coffee Bean Extract) · 70% bioavailability
Option B
Vitamin B12
Water-soluble vitamin (cobalamin) containing cobalt, essential for DNA synthesis, neurological function, and red blood cell formation.
Common forms
- Methylcobalamin · 70% bioavailability
- Hydroxycobalamin · 60% bioavailability
- Adenosylcobalamin · 50% bioavailability
Shared categories
Both Caffeine and Vitamin B12 are used for these health goals:
Products with both Caffeine and Vitamin B12
We found 12 products that combine both supplements:
Transparent Labs BULK Pre-Workout
Transparent Labs BULK Pre-Workout
Transparent Labs Cognition Nootropic
Transparent Labs BULK Black Pre-Workout
Transparent Labs BULK Black Pre-Workout
Essential Pre-Workout
Centrum MultiGummies Multi + Mental Focus
Big Shot Pre-Workout 300 g
Sparkling Energy Drink
Thavage Pre-Workout
Energy Sticks
Thavage Pre-Workout
Frequently asked
What is the difference between Caffeine and Vitamin B12?
Can I take Caffeine and Vitamin B12 together?
Which is more popular: Caffeine or Vitamin B12?
Related comparisons & products
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.