

⚡ 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. With a gluten-free, vegan-friendly formula and a proven track record of boosting energy, these small, easy-to-take tablets are a top choice for professionals seeking reliable, sustained vitality.












| ASIN | B0007PQARK |
| Best Sellers Rank | #14,981 in Health & Household ( See Top 100 in Health & Household ) #92 in Vitamin B12 Supplements #1,442 in Sales & Deals |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,919) |
| Date First Available | October 2, 2002 |
| Is Discontinued By Manufacturer | No |
| Item model number | 21104 |
| Manufacturer | 21st Century |
| Product Dimensions | 2.38 x 1.75 x 3.75 inches; 1.94 ounces |
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.
M**H
Best product in best rates
C**W
Good and cheap!
A**R
منتج رهيب وحتى وصلني وهو بارد يعني التخزين لا يعلى عليه وما سبب لي اعراض جانبية سواء خذيته على بطن فاضي أو مليان بس للامانة اول مره استخدمته جاني دوار خفيف وبعدها اختفى وحتى الخمول الي فيني تحسن بعد شهر تقريبا رغم كان مستوى الفيتامين عندي 249 قبل ما أخذه وكان عندي تعب واحد نصحني ان ارفع مستواه في الدم وفاد الحمد لله واخير لاتنسوني من دعائكم اذا اذا افدتكم
S**Y
Would buy again
ا**ر
يجنن
Trustpilot
3 weeks ago
2 weeks ago