Last update
3/30/2026
Reviewed By
Overview
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Moderately Good
Based on 16 Reviews
7.9
Supplement Facts
Serving Size: 1 Veggie Capsule
Amount Per Serving
%DV
Vitamin B12 (as Methylcobalamin)
1,500 mcg
62500%
Most Useful Reviews
9
Sustained energy for flu
Switching to Vitamin B12 has significantly improved my well-being. I feel more alert and focused, and the energy boost is fantastic with minimal niacin flush. The inclusion of folic acid complements its benefits, and the compact size and tastelessness make it convenient for daily consumption.
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9
Boosts for flu
Excellent product for increasing B12 levels, especially for those with folate cycle mutations. I take it on an empty stomach and feel an increase in energy as well as a good effect on my nervous system. I highly recommend it and plan to order more.
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9
High potency
My partner found the quality good and the tablet size better. For those using folic acid, this provides energy and niacin flush. The packaging is nice, with a high potency effect that's beneficial for the nervous system and metabolism. I enjoy the taste.
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User Reviews
USERS' SCORE
Moderately Good
Based on 16 Reviews
7.9
- All Reviews
- Positive Reviews
- Negative Reviews
9
Sustained energy for flu
Switching to Vitamin B12 has significantly improved my well-being. I feel more alert and focused, and the energy boost is fantastic with minimal niacin flush. The inclusion of folic acid complements its benefits, and the compact size and tastelessness make it convenient for daily consumption.
Read More
9
Boosts for flu
Excellent product for increasing B12 levels, especially for those with folate cycle mutations. I take it on an empty stomach and feel an increase in energy as well as a good effect on my nervous system. I highly recommend it and plan to order more.
Read More
9
High potency
My partner found the quality good and the tablet size better. For those using folic acid, this provides energy and niacin flush. The packaging is nice, with a high potency effect that's beneficial for the nervous system and metabolism. I enjoy the taste.
Read More
9
Significant boost
I’ve been using Fully Active B12 by Dr. Best and I'm genuinely impressed with its quality and effectiveness. The potent B12 dose supports energy and a healthy nervous system. Although B12 with niacin typically causes a "flush", I haven't experienced any discomfort. I’ve noticed a significant boost in energy and metabolism since starting this supplement, and the taste is mild and pleasant while the packaging keeps the tablets fresh.
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7.5
Recommended for flu
Good quality and standard-sized capsules. Folic acid boosts energy effectively. The packaging is suitable and I find it helpful for metabolism and my nervous system. Tasteless with a niacin flush. I recommend it for daily energy and nervous system improvement.
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Frequently Asked Questions
7.5
Immediate effect
The quality and ingredients are excellent, and the capsule size is convenient. I experience energy after a few days due to niacin; the effect is immediate and my nervous system and metabolism have improved. The taste is neutral.
8
Significant effect for flu
Great quality product! My energy and metabolism have surged since I started using it. The absorption is excellent, and there’s no taste to it. My folic acid levels increased drastically, and I experienced quick effects—ideal capsule size for swallowing.
9
Boosts for flu
Excellent product for increasing B12 levels, especially for those with folate cycle mutations. I take it on an empty stomach and feel an increase in energy as well as a good effect on my nervous system. I highly recommend it and plan to order more.
6
Improved metabolism
The active ingredient is vitamin B12 in chelated form, with medium-sized capsules and a neutral taste. The quality and composition are excellent. While folic acid is absent, I’ve noticed good effects; my energy has increased, the nervous system works better, I feel less anxious, and my metabolism has improved.
9
Significant boost
I’ve been using Fully Active B12 by Dr. Best and I'm genuinely impressed with its quality and effectiveness. The potent B12 dose supports energy and a healthy nervous system. Although B12 with niacin typically causes a "flush", I haven't experienced any discomfort. I’ve noticed a significant boost in energy and metabolism since starting this supplement, and the taste is mild and pleasant while the packaging keeps the tablets fresh.
6
Boosts energy
I take it with folic acid for better absorption; the quality, the ingredients, the size, the packaging and the taste are all fine. My metabolism, nervous system, and the influx of niacin have improved. The effect is definitely noticeable, giving me more energy.
7.5
Effective for flu
Excellent quality with good ingredients and sufficient potency. It’s rich in folic acid and provides noticeable energy without the unpleasant niacin flush. This supplement has greatly aided my nervous system and metabolism.
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