

⚡ Elevate your energy game with every tablet—because thriving waits for no one!
21st Century B12 1000 mcg Prolonged Release Tablets provide a potent, steady dose of vitamin B12 essential for energy metabolism, tissue health, and red blood cell production. With 110 gluten-free, vegan-friendly tablets per bottle, this supplement supports sustained vitality and wellness, backed by high customer ratings and trusted quality.













| ASIN | B0007PQARK |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #15,564 in Health & Household ( See Top 100 in Health & Household ) #88 in Vitamin B12 Supplements #1,466 in Sales & Deals |
| Brand Name | 21st Century |
| Color | No Color |
| Customer Reviews | 4.7 out of 5 stars 5,887 Reviews |
| Diet Type | Gluten Free |
| Dosage Form | 1000 |
| Flavor | Unflavored |
| Global Trade Identification Number | 00740985211045 |
| Item Dimensions | 2.38 x 1.75 x 3.75 inches |
| Item Form | Tablet |
| Item Height | 3.75 inches |
| Item Weight | 55 Grams |
| Manufacturer | 21st Century |
| Model Name | See packaging |
| Number of Items | 1 |
| Primary Supplement Type | Vitamin B2 |
| Product Benefits | Antioxidant |
| Specific Uses For Product | Heart |
| UPC | 740985211045 |
| Unit Count | 110 Count |
L**N
Definitely work!
These B12 supplements have been great. About a year ago I found out I was quite low on B12. I actually had to get B12 shots for a while. After I was back to a more normal level I was told to use these. I was worried that supplements wouldn’t help, but these dissolve right under your tongue and so it goes right to your bloodstream. When I went back recently I was actually at the high end of normal!! These dissolve pretty quickly, taste alright, and are pretty small. Definitely would recommend.
P**T
Value +
The 21st Century B12 1000 mcg Prolonged Release Tablets are a real bargain. I’ve noticed a difference in my energy levels, and the prolonged-release formula makes them easy on the system. Good quality, effective, and very affordable—definitely recommend if you need a reliable B12 supplement.
T**A
B12
Great flavor. Great price
I**R
Best B12 supplement available OTC
This supplement has been very easy to integrate into my daily routine. I usually take it right after breakfast. This has helped keep my blood pressure in check. Definitely ditch the prescription medications and opt for this instead.
S**N
Great price.
Dissolves easily. Taste great.
V**J
Great find
Great item. I buy them every 3 months. Another way to get my vitamins. They don't bother my stomach like others.
D**F
21st Century B12 ~Gives you a good boost
I feel everyone needs B12 in them. If you're planning to puchase B12, try these.
F**R
Good
Just as good as any you can purchase from retail store.
Trustpilot
2 months ago
1 week ago