If you’re here because you recognized yourself in the signs of B12 deficiency — the tingling, the fatigue that doesn’t respond to sleep, the brain fog, the mood shifts — this is the B12 designed for you. Non-methylated cyanocobalamin at a moderate dose, in a liquid format your body can absorb without being overwhelmed.
What B12 Does
Vitamin B12 is essential for nervous system function, red blood cell production, DNA synthesis, and cellular energy. It supports cognitive function, plays a key role in nerve transmission, and is critical for converting food into usable energy. B12 deficiency is one of the most common nutrient gaps, especially in vegetarians, vegans, older adults, and people taking certain medications.
Why Non-Methylated
Most “premium” B12 supplements use methylcobalamin — the pre-activated methylated form marketed as “active” or “more bioavailable.” For people whose bodies process methylation efficiently, methylcobalamin works well. But for the roughly 1 in 3 who are methyl-sensitive — including many with COMT slow variants or general methylation overload — methylcobalamin overstimulates the nervous system. The result is the exact set of symptoms most methyl-sensitive people have struggled with: anxiety spikes, racing thoughts, insomnia, irritability, sometimes heart palpitations after taking a B-complex.
Cyanocobalamin is the standard non-methylated form your body activates at its own pace. It’s not “less bioavailable” in any meaningful way — it just doesn’t flood your system with pre-converted nutrients faster than you can comfortably process them.
Why Low-Dose Liquid
Most “premium” B12 supplements run 1,000% to 10,000% of the daily value per serving. Your body can only use so much B12 at once, and even non-methylated forms can overstimulate sensitive systems at mega-doses. We keep ours at 500% DV or less, in a liquid format that lets you adjust your dose drop by drop and absorb it sublingually for fast, gentle uptake — no capsule fillers, no binders.
How to Take It
One full dropper (about 16 drops) daily. Take it sublingually — hold under your tongue for 30-60 seconds before swallowing — for the fastest absorption. Or add the drops to a few ounces of water if you prefer.
When to expect results: Most people notice steadier energy and less brain fog within 1-2 weeks. Deeper shifts (mood, resolution of tingling, sustained cognitive clarity) typically show up between 30-60 days. Nerve-related symptoms sometimes take longer — several months — because nerve tissue rebuilds slowly.
Bottle size: 1 fluid ounce— approximately 36-day supply at one dropper (16 drops) per day.
Common Uses
People commonly use B12 for:
– Supporting nervous system function
– Supporting cellular energy production
– Supporting cognitive function and focus
– Supporting healthy red blood cell production
– Complementing folate (B9) for nervous system support
– Filling gaps in vegetarian or vegan diets
Are you Vitamin B12 Deficient – Take The Quiz to Find Out
Often paired with:
Folic Acid for methylation support
B6 for mood support
B-Complex for complete energy support
Frequently Asked Questions
Most MTHFR carriers do fine — often better — with non-methylated B12. Heterozygous MTHFR (one copy) means your enzyme runs at about 65-70% efficiency, which is plenty to activate cyanocobalamin on its own. Homozygous MTHFR (two copies) runs at about 30-40%, but even those cases often tolerate non-methylated forms better than expected — especially when the whole B-vitamin picture is supported.
The “MTHFR = must take methylated” advice you may have heard is more oversimplified than the wellness world admits. For people with slow COMT or MAOA variants alongside MTHFR — which is common — methylated forms can actively make things worse.
If you’ve tried methylated B12 and felt anxious, wired, or unable to sleep, that’s a real physiological response. Non-methylated cyanocobalamin lets your body activate B12 at its own pace instead of being flooded with pre-converted forms.
Yes. Your body’s B12 absorption drops sharply above 1,000 mcg — a phenomenon called “saturated transport.” At 5,000 mcg, you’re absorbing maybe 15-20 mcg. The rest turns your urine bright yellow and leaves your body.
Mega-dose formulations look impressive on the label, but most of the dose is wasted. For sensitive systems, high doses of B12 can also cause overstimulation even in non-methylated form. Moderate doses at 500% DV give your body what it can actually use — without the overload.
A few things worth knowing:
- Form — Many inexpensive B12 supplements now use methylcobalamin, which doesn’t work for methyl-sensitive systems. Ours is cyanocobalamin, the non-methylated form.
- Dose — Most B12 on Amazon runs 1,000-5,000 mcg. We deliberately keep ours at 500% DV or less, which is the range your body can actually absorb.
- Format — Most B12 comes in capsules or tablets. Ours is liquid — you can adjust drop-by-drop, especially important if you’re sensitive.
- Clean formulation — No fillers, no artificial colors, no “natural flavors” hiding undisclosed ingredients. Ingredient list is short and pronounceable.
- Made in USA, third-party tested in a GMP-certified facility.
- Real support — If you have questions or something isn’t working, you can email us and get a real person. Try that with an Amazon supplement.
Possibly. Standard B12 tests use a reference range that starts as low as 200 pg/mL, but many functional medicine practitioners consider anything under 500 pg/mL functionally deficient. Your symptoms may be real even if your bloodwork says you’re “in range.”
Before self-supplementing, consider asking your doctor for a homocysteine or MMA (methylmalonic acid) test — these can catch functional deficiency that a standard B12 panel misses. If those come back elevated, or if your standard B12 is in the low-normal range and you have clear symptoms, a moderate-dose non-methylated B12 is a reasonable next step.
Most people notice steadier energy and reduced brain fog within 2-4 weeks of consistent daily use. Bigger shifts (mood, cognitive clarity, resolution of persistent tingling) typically show up between 30-60 days.
Nerve-related symptoms sometimes take longer — several months — because nerve tissue rebuilds slowly. If your primary symptom is tingling or numbness, give yourself 90+ days before evaluating whether it’s working.
If you don’t notice anything at all after 30 days of consistent daily use, that’s useful information too. It may mean B12 isn’t the missing piece for you — in which case our 120-day money-back guarantee has you covered.
One full dropper (16 drops) daily. For best absorption, hold under your tongue for 30-60 seconds before swallowing — this lets it absorb through the mouth tissue directly rather than going through your digestive system.
If you don’t love the taste, you can add the drops to a few ounces of water and drink it. Still effective, just slightly less potent than sublingual absorption.
Take it with or without food, whatever fits your routine. Morning is a common choice since B12 can support daytime energy.
Mild. Slightly sweet from the vegetable glycerin base with a faint vitamin taste. Most people can hold it under their tongue without issue. If you don’t love it, adding the drops to water solves that entirely.
For most medications, yes. A few specific interactions to be aware of:
- Methotrexate users should coordinate B12 and folate use with their doctor
- Certain seizure medications may affect B12 levels — worth monitoring with your provider
- Active cancer treatment — check with your oncology team before supplementing, as B-vitamins can interact with some chemotherapy drugs
For general medications like blood pressure, cholesterol, thyroid, or diabetes meds, B12 supplementation is typically fine. If you’re on multiple medications or have questions, checking with your pharmacist or doctor is always the safest path.
Depends on your situation:
- Take just B12 if you have a confirmed B12 deficiency, if you’re addressing specific B12-related symptoms (tingling, fatigue, cognitive fog), or if you want to test how your body responds to one B-vitamin at a time before layering more.
- Take the full B-Complex if you want broad daily support across all 8 B-vitamins, if you’re dealing with more systemic issues (anxiety, sleep, mood), or if you don’t have a specific deficiency to target.
- Some people take both — B12 alone for the specific deficiency plus the B-Complex for broad daily support. Usually not a starting point.
For most first-time customers focused specifically on B12, start with just this bottle. You can always add the B-Complex later if you decide you want broader coverage.
Yes. B12 is water-soluble, meaning your body excretes what it doesn’t use rather than storing it to toxic levels. Cyanocobalamin has been used safely in supplementation for decades.
Many people take a daily B12 supplement for years — especially those over 40 (when absorption declines), vegetarians and vegans, and anyone on medications that deplete B12 (metformin, PPIs, long-term antibiotics). If you have a chronic reason to supplement, ongoing use is appropriate.
1oz bottle at one dropper per day = approximately 36-day supply. If you subscribe, we’ll send you a fresh bottle before you run out. Cancel anytime.
Our vegetable glycerin is derived from palm, then highly refined to remove plant proteins — so it’s suitable even for people with palm allergies. It’s food-grade, USP-certified, and manufactured in the USA.
We chose palm-derived glycerin because it’s the most consistent, purest source available at pharmaceutical grade. It’s what allows the liquid base to be smooth and naturally mild-tasting without needing added flavors, sweeteners, or preservatives.
Email support@herb-science.com within 120 days of your order for a full refund. No returns required. Keep whatever’s left in the bottle.
We built this policy because we trust our customers. If this product isn’t right for you, we’d rather you have a positive experience with our brand than deal with the hassle of shipping something back.
**This information has not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease.
