Vitamin B1 (Thiamine) — Low-Dose, Non-Methylated
Vitamin B1 (thiamine) supports your energy and is required to break down carbohydrates, along with other key digestive and nervous system functions. But most B1 supplements on the market come in extremely high doses — too high for most people, and especially for those with MTHFR and slow COMT (about 1 in 3 adults).
This is the right B1 for you if:
- You have MTHFR, slow COMT, or you’ve been told you’re “methyl-sensitive”
- You’ve reacted badly to standard B-complexes or methylated B’s
- You want a clean, low-dose thiamine you can actually tolerate
- You’re building a stack and need a B1 that won’t overload your system
- You’re perimenopausal or postmenopausal and your tolerance to supplements isn’t what it used to be
- You’ve been dismissed by doctors who told you your B’s are “fine” even though you don’t feel fine
This probably isn’t the right B1 for you if:
- You’re looking for mega-dose benfotiamine for diabetic neuropathy
- You want a stimulant-style energy boost
- You believe “more is better” when it comes to vitamins
What’s inside:
A gentle, bioavailable form of thiamine at a dose your body can actually use — not a dose designed to spike bloodwork or make you feel a buzz. Just the amount your nervous system, energy production, and brain actually need to run well.
No methylated forms. No fillers. No mega-doses. No extras your body has to work to clear.
There is a lot of misinformation in the supplement world. Our products at Herb-Science aren’t for everyone and we don’t try to cover that up to make a sale (we are so committed to this that we offer free shipping and a 120 day money back guarantee if you don’t love the product). After following the wrong advise for years and not getting better, I designed products for myself, which happens to fit 1 in 3 people – Learn More Here
Most Common Questions About Vitamin B1
Take one full dropper (16 drops) daily, either directly in your mouth or mixed into water or juice. Best taken in the morning to support daytime energy and focus.
Yes, you can! A full serving is 16 drops, but you can easily take fewer drops if you’d like a lower dose. Each vitamin is evenly distributed in the liquid, so the dose is proportional to the number of drops you take.
Vitamin B1 (Thiamine): 0.375 mg per drop (6.0 mg per 16 drops)
Many vitamin companies put very high amounts into their formulas — often far more than your body can actually use. We take a different approach. Our formulas are designed to give you the optimal dose your body can absorb and use effectively, not just the highest number on the label.
Because our vitamins are in a liquid form, they’re easier for your body to absorb compared to tablets or capsules. That means you don’t need as high of a dose to get the same — or even better — benefits.
Plus, our doses are carefully set to match what clinical studies show is both safe and effective for long-term use. You get the nutrition you need without overwhelming your system.
Vitamin B1, also known as thiamine, is one of the essential B vitamins your body needs to convert carbohydrates into energy, support nervous system health, and maintain mental clarity and mood stability. It plays a key role in metabolism, nerve signaling, and brain function.
Supports daily energy production
Promotes mental clarity and focus
Helps stabilize mood and nervous system function
Supports healthy blood sugar metabolism
May improve stress resilience and reduce brain fog
Yes. Thiamine is crucial for producing ATP — the fuel your cells use for energy. If you’re low in B1, you might feel tired, mentally sluggish, or emotionally off. Replenishing it can support natural energy, better focus, and stable mood.
Chronic fatigue
Brain fog or poor memory
Mood swings or irritability
Nerve tingling or sensitivity
Poor coordination or weakness
Blood sugar instability or carb cravings
Thiamine deficiency is more common in people over 40, those with high-carb diets, alcohol use, or poor gut absorption.
When you’re under stress, your body burns through B vitamins — especially thiamine — faster than normal. B1 helps regulate nervous system signals and keeps your mental and physical energy stable under pressure.
Yes. Thiamine is a water-soluble vitamin, so your body uses what it needs and excretes the rest. Our supplement provides a nutritional dose that’s ideal for daily use without overloading your system.
We use thiamine hydrochloride, a stable and effective form that absorbs well and is gentle on sensitive systems.
Just vegetable glycerin and purified water — no alcohol, preservatives, or artificial additives. It’s vegan, non-GMO, gluten-free, and allergen-friendly.
Liquid thiamine is easier for your body to absorb — especially if you have gut issues, low stomach acid, or trouble swallowing pills. It gets to work faster and delivers a clean, efficient dose without fillers or binders.
