


⚡ Power your day, the smart way!
21st Century B12 1000 mcg Prolonged Release Tablets provide a high-potency, gluten-free vitamin B12 supplement designed for sustained energy support. Each tablet is lab-tested for guaranteed quality, with 110 tablets per bottle to keep you fueled and focused throughout your busy professional life.

S**
Great price.
Dissolves easily. Taste great.
N**L
Excelent
Excellent
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.
S**S
Watch expiration
Delivery was fast and product was as I've ordered before the only reason I took one star away was the B12 I received expires two months before the one I'm replacing. Although that isn't until 2026 I would still expect the product I'm receiving to be more fresh than what it is replacing.
A**S
good quality and price
good price
H**E
Good absorption, not bad taste
I love my vitamin B-12. These absorb well under the tongue and are the perfect size. The taste isn’t too terrible either.
L**S
Muy bueno
Me encanta y sabe delicioso
E**Z
Goood
Goood
Trustpilot
3 weeks ago
3 weeks ago
1 day ago
3 weeks ago