Sale

Carusos Natural Health

Carusos Vitamin B1 250mg

Price $19.20 Save 20% RRP ~~$24.00~~

You'll Earn pts

Price $19.20 Save 20% RRP ~~$24.00~~

You'll Earn pts

Add to cart Out of stock for delivery Sold Out

Delivery

In Stock Low Stock Out of Stock

Free Click & Collect. Add your postcode and we'll show you which store has it ready in 1 hour.

No store near you yet. We deliver Australia wide.

Delivery

${outlet?.stock[currentVariant.id]} In Stock

Add to cart Out of stock for delivery Sold Out

$19.20 RRP ~~$24.00~~

Please enable JavaScript in your browser to add this product to your cart.

To gain access, login, then complete the below form or script upload.

Free

Shipping Available

Free

Click & Collect

Free

10 min Consult

Sorry, we need a little more information before we can grant access to this product.

Practitioner only products are only available to Mr Vitamins members.

Free 10 minutes phone consult

Please select a convenient time for us to call you back or, select ‘next available for the soonest possible response.

Book a 10min consult

We've sent you an email with a link to update your password.

Reset your password

We will send you an email to reset your password.

Terms and Conditions

Disclaimer

Users assume all responsibility and risk for using the Mr Vitamins website. Information provided on the Mr Vitamins website is provided on an “as is” basis. By using this website you consent to the possibility of delays, omissions, inaccuracies, or other issues in content. Furthermore, you agree that should you rely on this content, you are doing so at your own risk. In no way is Mr Vitamins liable to you or any third party for damages, including but not limited to, loss of use, loss of data, loss of profits, or business interruption. While we do our best to maintain current and correct information that is free of errors or viruses, Mr Vitamins does not guarantee that its website and its contents are free of these harmful components.

Medical Disclaimer

None of the information presented on the Mr Vitamins website is intended nor should be considered as a medical diagnosis or form of treatment. Content found on the Mr Vitamins website does not replace or undermine medical advice. This content is purely for your general knowledge and information not for purposes of self-diagnoses. Prior to starting any health, nutritional, or supplemental-related treatment, you should always seek the direction of a physician, medical practitioner, or an otherwise qualified health provider. At the same time, you should consult with a physician, medical practitioner, or an otherwise qualified health provider regarding any ongoing medical treatment or medical questions you may have.

Practitioner Only Products

When purchasing practitioner-only products from Mr Vitamins, it is the customer's responsibility to purchase the correct products prescribed to them by their practitioner(s) and to take them as they have been directed from their practitioner. Mr Vitamins will not be responsible if a customer provides us with incorrect information about their practitioner.

By agreeing to the terms and conditions, the customer is certifying that:

They are over the age of 18They are purchasing Practitioner Only products for their own personal consumptionThe answers they have provided in the survey and to the prescribing practitioner are accurate and reflective of their current circumstancesThey will use the Practitioner Only products in accordance with the prescribing practitioner’s and manufacturer’s guidance

Why Mr Vitamins?

Trusted since 1992
8,000+ reviews at 4.7★
840+ trusted brands
8 stores across NSW & Qld

This Practitioner Product will be dispensed under the care of a qualified Naturopath.

Practitioner only products are only available to Mr Vitamins members. To access, complete the health survey below, and a member of our team will review your case prior to dispatch. Sometimes one of our Naturopaths may need to make contact to confirm whether this is the best product for you If you already have access, it will appear after you sign-in.

Once complete please reload your page.

Carusos Vitamin B1 250mg is a premium thiamine (vitamin B1) supplement designed to support energy metabolism and nervous system function. Thiamine is an essential B vitamin involved in converting food into energy and maintaining healthy nerve function.

Product Strengths

High-potency 250mg thiamine (Vitamin B1) per capsule
Supports energy production and metabolism
Promotes healthy nervous system function
May support cognitive function
From trusted Australian health brand Carusos

Ingredients

Thiamine hydrochloride 250mg (equivalent to Vitamin B1 250mg), microcrystalline cellulose, silicon dioxide, magnesium stearate, hypromellose capsule.

Allergens

Always review label for full list of ingredients.

Suggested Use

Take 1 capsule daily with food, or as directed by your healthcare professional. Best taken as part of a balanced diet.

Storage

Store below 25°C in a dry place, away from direct light and moisture. Keep out of reach of children.

Disclaimer: Always read the label and follow the directions for use. Vitamin and mineral supplements should not replace a balanced diet.

Ingredients

Each tablet contains:

Thiamine hydrochloride (Vitamin B1): 250mg.

Suggested dose

Adults and children 16 years and over: Take 1 tablet daily with food or as advised by your health professional.

product-detail { position: relative; z-index: 9999; } /* MRV 2026-10-30: JavaScript off, non-practitioner products. The old rule here forced EVERY [v-if]/[v-show] on the page visible, so all Vue states (login and reset-password popups, T&C popup, "Login to Access", every Add to Cart label) rendered at once. theme.liquid's <noscript> already hides [v-if], [v-show] and .mask and un-hides [v-cloak]; here we also hide the v-else / v-else-if branches in this section, so only the static product content shows (title, images, options, description, tabs), plus the static price below. */ section.container-product [v-if], section.container-product [v-else-if], section.container-product [v-else], section.container-product [v-show] { display: none !important; } section.container-product .pdp-noscript-only { display: block !important; }

Thiamine Hydrochloride

What is thiamine hydrochloride?

Thiamine hydrochloride is the standard form of vitamin B1, found in most plain B1 tablets and B complex blends. Vitamin B1 helps your body turn carbohydrate into energy, and you need a little every day.

Christina Hanley, BHSc (Nutritional Medicine), Digital Experience & Content Manager, Mr Vitamins

Christina HanleyBHSc (Nutritional Medicine), Digital Experience & Content Manager
Checked this page October 2026

See what we checked

Is Thiamine Hydrochloride right for you?

Thiamine hydrochloride is the everyday vitamin B1 top-up. These are the questions our naturopaths ask in store.

A good fit if

You want a straightforward vitamin B1 top-up, on its own or as part of a B complex
You're pregnant or breastfeeding and want to meet the higher recommended intake for those stages
You understand a supplement like this only helps if your diet isn't already covering your needs

Check with us first if

You take prescription medicine of any kind. We don't have interaction data for thiamine, so we can't rule anything in or out.
You drink heavily, or have a history of alcohol use disorder. Thiamine needs are known to be higher in that case, although we don't yet have the specific guidance.
You're giving it to a child. Ask us for the right dose rather than working from an adult label.
If you take prescription medicines, check with your doctor, pharmacist or our naturopaths before you start.

Common questions

Is thiamine hydrochloride the same as vitamin B1?

Yes, in practice. Vitamin B1 is the vitamin, and thiamine hydrochloride is the water-soluble salt used to provide it in most Australian tablets and B complex blends. The TGA's own records link the two directly. Benfotiamine is different. It's a synthetic, fat-soluble version sold and studied for a separate purpose, and it isn't on Australia's permitted ingredients list (Schedule 1) the way thiamine hydrochloride is.

How much vitamin B1 do you need a day?

The NHMRC recommends 1.2 mg a day for adult men and 1.1 mg for adult women, rising to 1.4 mg in pregnancy and while breastfeeding. Children need 0.5 mg at ages 1 to 3, rising through the school years. What you need depends on your age, diet and health, so talk to one of our naturopaths if you're unsure.

Can you take too much thiamine hydrochloride?

No upper limit has been set. The NHMRC says there isn't enough data to estimate one, which means the information is missing rather than that any amount is proven safe. We don't have data on dose-related side effects for this form, so we don't make a claim either way beyond what the NHMRC says.

How much, and when

Reference values. The NHMRC recommends 1.2 mg a day for adult men and 1.1 mg for adult women, rising to 1.4 mg in pregnancy and while breastfeeding. Children need 0.5 mg at ages 1 to 3, rising to 0.9 mg at 9 to 13 and up to 1.2 mg for teenage boys.

Typical supplemental range. We don't yet have a confirmed source for how much a standard Australian thiamine hydrochloride tablet contains. Tablets are usually well above the 1.1–1.2 mg daily figure, but we can't yet say exactly how much.

Upper level. None is set. In the NHMRC's own words, "the upper level of intake of thiamin cannot be estimated", because there isn't enough data to work one out.

Worth knowing. What you need depends on your age, diet and health, so talk to one of our naturopaths.

Before you start

If any of these sound like you, talk to one of our naturopaths or your doctor before you start.

Any prescription medicine. We found no interaction data for thiamine hydrochloride.
Heavy drinking or alcohol use disorder. Your needs are known to be higher, but we don't have specific guidance.
Giving it to a child. Ask us for the right dose rather than guessing from an adult label.
If you take prescription medicines, check with your doctor, pharmacist or our naturopaths before you start.

The evidence, and its limits

Adults need 1.2 mg of vitamin B1 a day for men and 1.1 mg for women, according to the NHMRC's reference values. (NHMRC nutrient reference values)
Thiamine hydrochloride is Schedule 1 item 4917, allowed in listed medicines with no specific requirement, warning or dose cap. (Schedule 1, item 4917)
The TGA's own ingredient records link thiamine hydrochloride directly to "Vitamin B1", the ingredient most plain B1 tablets are based on. (Schedule 1, item 4917)
We don't have a clinical trial of thiamine hydrochloride itself; the trials we have used benfotiamine, a different, fat-soluble form.
No upper limit of intake is set for thiamin, because the NHMRC says there isn't enough data to estimate one. (NHMRC nutrient reference values)

How it works

Thiamine's job is to help your cells turn carbohydrate into energy you can use. It works as a helper molecule that certain enzymes need on hand before they can break down sugar for fuel. The same enzyme pathway keeps your nerve cells signalling properly, which is why running low can show up as both an energy problem and a nerve problem. Your body holds only a small reserve, so you need a steady supply from food or a tablet. Thiamine hydrochloride is simply thiamine bound to hydrochloric acid to make it stable and water-soluble, so a tablet dissolves and is absorbed much like the vitamin in food.

The Australian rules

Thiamine hydrochloride is item 4917 on Australia's permitted ingredients list (Schedule 1, Determination No. 2 of 2026), allowed in listed medicines. It has no specific requirement, warning statement or daily dose cap. The TGA's own ingredient records link it directly to "Vitamin B1", alongside two other permitted thiamine forms, thiamine and thiamine nitrate. Being allowed isn't the government endorsing any product or claim.

Read the instrument: Schedule 1, item 4917.

Not sure this is the right form for you? Ask one of our naturopaths. It is free and takes 10 minutes.

Always read the label and follow the directions for use. General information only, and not a substitute for advice from your doctor or one of our naturopaths.

Carusos Vitamin B1 250mg

Shipping

Click & Collect

Consult

Terms and Conditions

Description

Product Strengths

Ingredients

Allergens

Suggested Use

Storage

ingredients

suggested dose

Product Strengths

Ingredients

Allergens

Suggested Use

Storage

Ingredients

Suggested dose

What is thiamine hydrochloride?

Is Thiamine Hydrochloride right for you?

Is thiamine hydrochloride the same as vitamin B1?

How much vitamin B1 do you need a day?

Can you take too much thiamine hydrochloride?

How much, and when

Before you start

The evidence, and its limits

Reviews and Q&A

Shopping With Us

Our Stores

Contact Us