Vitamin B-12
Daily energy, restored.
A premium liquid B-12, crafted for clean, everyday vitality. Each serving delivers 1,200 mcg of methylcobalamin, the highly active form of B-12, in a fast-absorbing sublingual liquid with a complete B-complex for energy and metabolism support. Naturally flavored with raspberry and sweetened with stevia, it is an effortless daily ritual, ideal for vegans and vegetarians.
- Supports the body's natural energy metabolism
- Helps convert food into usable energy
- Supports normal nervous system function
How to use+
Adults: Take 1 ml daily, preferably under the tongue for best absorption. Hold for 20–30 seconds before swallowing. Best taken in the morning or midday (may increase energy). Do not take before bedtime.
Safety & interactions+
Vitamin B-12 Drops should be used cautiously by: Individuals with Leber’s disease (risk of optic nerve damage with B-12) People with kidney disease (monitor B-vitamin levels) Those taking medications that affect folate/B-12 metabolism Individuals with sensitivity to niacin (may cause mild flushing) Pregnant or breastfeeding individuals should consult a doctor Generally safe due to being a water-soluble vitamin group.
What it helps with
How it works in your protocol
Most supplements are a guess. Agen earns every capsule from your own data — the measure → analyze → act loop.
Measure
The Band tracks your HRV, sleep and resting heart rate; the app reads your stress load across the day.
Analyze
When recovery dips and stress climbs, Agen flags adaptogenic support — and scores the evidence behind it.
Act
It enters your daily protocol at the right dose, dispensed by the Robot each evening.
What the science says
Every claim scored by evidence strength — including the ones that aren’t there yet.
Early signals only — the honest answer is the evidence isn't conclusive yet. We'll update this the moment it is.
Sources: PubMed abstract ↗PubMed 30949983 ↗PubMed 27823800 ↗PubMed 22232016 ↗
Clean formula, honest sourcing
- 1,200 mcg methylcobalamin, the highly active form of B-12
- Complete B-complex synergy for energy and metabolism
- Fast-absorbing liquid for sublingual use or mixing into a drink
- 2 fl oz bottle, a 30-day supply
- Naturally raspberry-flavored and sweetened with stevia
Part of the morning you already have
One serving, timed to your day — no rituals, no friction.
How Agen compares
| Agen | Generic supplements | Fitness trackers | |
|---|---|---|---|
| Personalized to your data | — | — | |
| Evidence-scored claims | — | — | |
| Closes the measure→act loop | — | Data only | |
| No subscription lock-in | — | — |
Loved by 12,000+ members
Questions, answered
No — Ashwagandha works on its own. But paired with the Band, Agen times and doses it to your recovery data so every serving is earned. See how it works →
One serving daily. Many members take it in the evening for calm and sleep support. Add to protocol →
Every batch is third-party tested for purity and potency. It's formulated for structure/function support — not to treat or cure any condition. Read our evidence standard →
You can cancel a subscription anytime with no fees or lock-in, and our support team is here to help if anything isn't right. Start your protocol →
The Agen standard
Start your protocol today
One serving a day, dosed to your biology. Cancel anytime — no lock-in.
