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⚡ Power your day with B12 brilliance — don’t get left behind!
21st Century B12 1000 mcg Prolonged Release Tablets provide a potent, steady dose of vitamin B12 to support healthy blood cells and tissue maintenance. With a gluten-free, vegan-friendly formula and top-tier customer ratings, these tablets offer an effective, convenient way to boost energy and overall wellness.

| ASIN | B0007PQARK |
| ASIN | B0007PQARK |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #15,871 in Health & Household ( See Top 100 in Health & Household ) #91 in Vitamin B12 Supplements #1,434 in Sales & Deals |
| Brand Name | 21st Century |
| Color | No Color |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,977) |
| Date First Available | October 2, 2002 |
| Diet Type | Gluten Free |
| Dosage Form | 1000 |
| Flavor | Unflavored |
| Global Trade Identification Number | 00740985211045 |
| Is Discontinued By Manufacturer | No |
| Item Dimensions | 2.38 x 1.75 x 3.75 inches |
| Item Form | Tablet |
| Item Weight | 55 Grams |
| Item model number | 21104 |
| Manufacturer | 21st Century |
| Manufacturer | 21st Century |
| Manufacturer Part Number | 21104 |
| Model Name | See packaging |
| Model Number | 21104 |
| Number of Items | 1 |
| Primary Supplement Type | Vitamin B2 |
| Product Benefits | Antioxidant |
| Product Dimensions | 2.38 x 1.75 x 3.75 inches; 1.94 ounces |
| 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
J**S
Great product
Great product
G**N
Conditions of delivery caused bad damage to theainer of pills. Opened top broken!
B12 vitamins are excellent for you. I take 1 a day. Melt in your mouth. Easy....and tiny size wonderful 👍
K**T
Low on B12
I use these for being low on B12- B12 shot too expensive even with insurance
S**N
Great price.
Dissolves easily. Taste great.
W**G
Right on time
Awesome
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
K**R
ممتازة
S**Y
Would buy again
Trustpilot
Hace 1 mes
Hace 4 días