









⚡ Elevate your energy game with every tablet!
21st Century B12 1000 mcg Prolonged Release Tablets provide a potent, steady dose of vitamin B12 essential for red blood cell formation and tissue health. Designed for vegans and free from gluten and GMOs, these tablets support sustained energy and wellness with a trusted, affordable formula favored by thousands.













| ASIN | B0007PQARK |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #14,873 in Health & Household ( See Top 100 in Health & Household ) #86 in Vitamin B12 Supplements #1,396 in Sales & Deals |
| Brand | 21st Century |
| Brand Name | 21st Century |
| Color | No Color |
| Customer Reviews | 4.7 out of 5 stars 5,925 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 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.
J**S
Great product
Great product
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.
Trustpilot
5 days ago
4 days ago