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MASON NATURAL Vitamin B1 (Thiamine) 250 mg, 100 Tablets

$39.42

Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Swimwear Size Chart

Dress Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

Delivery

Orders are generally processed within 1–3 business days. Standard delivery to addresses in Canada usually takes approximately 5–15 business days after dispatch.

Tracking information will be sent by email when it becomes available. Delivery times are estimates and may be affected by carrier delays, customs, severe weather or circumstances outside our control.

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Returns & Refunds

Return requests must be submitted within 30 days of delivery. Vitamins, supplements and other health-related products must be unused, unopened, sealed and returned in their original packaging.

Opened or used products cannot be returned for health and safety reasons, unless the item arrived damaged, defective or incorrect. Damaged, defective or incorrect items should be reported within 48 hours of delivery.

Customers are responsible for return shipping costs for unwanted or change-of-mind returns. A restocking fee of up to 20% may apply where permitted. Original shipping charges are non-refundable unless the return results from an error on our part.

Refunds are issued to the original payment method after the returned item has been received and inspected. Please allow up to 7 business days for the refund to be processed.

Approved Return Address
Fullfillonus #1202
1128 Lexington Ave, Bldg 4 E
Rochester, New York 14606
United States
Please contact us before sending a return. Returns sent without prior authorization may be delayed, rejected or returned to the sender.

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Vitamin4CA.com is operated by Cloverlight LLC.

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MASON NATURAL Vitamin B1 (Thiamine) 250 mg, 100 Tablets

MASON NATURAL Vitamin B1 (Thiamine) 250 mg, 100 Tablets

$39.42

Who Should Consider a Thiamine Supplement?

Discover Mason Natural Vitamin — While a balanced diet provides some thiamine, certain groups may benefit from supplementation. Individuals with high energy needs such as athletes, active individuals, and those with physically demanding jobs may require additional thiamine to support increased energy metabolism. Older adults often experience reduced absorption and declining dietary intake, making supplementation beneficial for maintaining energy and nerve health. People with digestive conditions like Crohn's disease, ulcerative colitis, or chronic diarrhea may have impaired thiamine absorption. Those consuming alcohol should note that alcohol interferes with thiamine absorption and increases excretion; many healthcare professionals recommend thiamine for individuals who regularly consume alcohol to support nervous system health. Vegans and vegetarians may have variable bioavailability from plant sources, so a supplement ensures consistent intake.

What Is Thiamine?

Thiamine, also known as vitamin B1, is an essential water-soluble vitamin that plays a fundamental role in converting carbohydrates into energy. It acts as a cofactor for several enzymes involved in energy metabolism, particularly in the breakdown of glucose. Without adequate thiamine, the body cannot efficiently produce ATP, the primary energy currency of cells. This makes thiamine crucial for every organ system, especially those with high energy demands like the brain, heart, and muscles.

Thiamine is not stored in large amounts, so regular dietary intake or supplementation is necessary. While found in foods like whole grains, pork, and legumes, many people—especially those with modern diets high in processed foods—may fall short of optimal levels. A high-quality thiamine supplement like MASON NATURAL Vitamin B1 ensures you meet your daily needs for sustained energy and metabolic health.

Key Benefits of Thiamine

Thiamine supports several vital functions in the body:

  • Energy Production: Thiamine is a key component of the coenzyme thiamine pyrophosphate (TPP), which is essential for converting carbohydrates from food into usable energy. This helps combat fatigue and supports daily vitality.
  • Nervous System Function: The vitamin contributes to the synthesis of neurotransmitters and the maintenance of myelin sheaths, promoting healthy nerve transmission. Adequate thiamine levels are associated with normal cognitive function and nerve health.
  • Cardiovascular Health: By supporting energy metabolism in heart cells, thiamine helps maintain normal heart function and healthy circulation.
  • Immune Support: Thiamine plays a role in the proper functioning of immune cells, contributing to a robust immune response.

This product has not been evaluated by Health Canada. It is not intended to diagnose, treat, , or prevent any disease. Consult a healthcare practitioner before using this product, especially if you are pregnant, breastfeeding, or have a medical condition. Keep out of reach of children.

How to Choose a Thiamine Supplement

When selecting a thiamine supplement, consider the form and dosage. Thiamine hydrochloride (HCl) is the most common and well-studied form, offering reliable absorption. MASON NATURAL Vitamin B1 uses pure thiamine HCl at a potent 250 mg per tablet, a dosage suitable for general wellness and targeted support. Some supplements offer benfotiamine, a fat-soluble derivative that may have enhanced absorption for nerve health, but thiamine HCl remains the standard for energy metabolism.

Look for products with clean ingredient profiles. MASON NATURAL's formula is soy-free, sodium-free, and contains No artificial colours, flavors, or preservatives. It is also gluten-free and non-GMO. Third-party testing for purity and potency adds confidence. MASON NATURAL has adhered to current Good Manufacturing Practises (cGMPs) for over 50 years, ensuring consistent quality.

Recommended Dosage and Usage

The recommended dietary allowance (RDA) for thiamine is 1.2 mg for men and 1.1 mg for women. However, therapeutic dosages used in supplements often range from 50 mg to 500 mg. MASON NATURAL Vitamin B1 provides 250 mg per tablet, which is considered a high-potency dose. Take one tablet daily with food to enhance absorption. As with any supplement, it is advisable to consult with a healthcare professional before starting a new regimen, especially if you have underlying health conditions or are taking medications.

Frequently Asked Questions

What is the difference between thiamine HCl and benfotiamine? Thiamine HCl is the standard water-soluble form used in most supplements. Benfotiamine is a fat-soluble derivative that may be better absorbed for nerve-specific support. For general energy and metabolism, thiamine HCl is effective and well-researched.

Can I take thiamine on an empty stomach? Thiamine is best absorbed with food, as it is water-soluble and requires carrier proteins that function optimally in the presence of other nutrients. Taking it with a meal also reduces the chance of stomach upset.

How long does it take to feel the effects of thiamine supplementation? Effects can vary. Some people notice improved energy within a few days, while others may take weeks. Consistent daily use is key, as the body uses thiamine continuously for metabolic processes.

Is it safe to take 250 mg of thiamine daily? The upper limit for thiamine has not been established due to its low toxicity. Doses up to 500 mg are commonly used under professional guidance. However, it is always best to follow the recommended dosage and consult your healthcare provider.

Important Information

Things You Need to Know

Your payment and personal information are protected using industry-standard SSL encryption, and all payments are securely processed through Shopify-approved payment providers. Prices are displayed in Canadian dollars, and applicable taxes are calculated at checkout.

Orders are generally processed within 1–3 business days. Standard delivery to Canada usually takes 5–15 business days after dispatch. Delivery times are estimates and may be affected by carrier delays, customs processing, weather conditions or other circumstances outside our control. Tracking information will be provided when available.

Return requests must be submitted within 30 days of delivery. Vitamins, supplements and health products must be unused, unopened, sealed and returned in their original packaging. Opened products cannot be returned unless they were delivered damaged, defective or incorrect.

Customers are responsible for return shipping costs for unwanted or change-of-mind returns, and a restocking fee of up to 20% may apply. Damaged, defective or incorrect items must be reported within 48 hours of delivery and may qualify for a replacement or full refund.

Refunds are issued to the original payment method after the returned item has been received and inspected. Refund processing may take up to 7 business days. Before returning any product, please contact our customer support team for return authorization. Returns sent without prior approval may be delayed or rejected.

Approved returns must be sent to:

Return Address Fullfillonus #1202
1128 Lexington Ave, Bldg 4 E
Rochester, New York 14606
United States

Refused or unclaimed shipments may only be refunded after they are returned and inspected. Original shipping charges, return shipping costs, customs fees and carrier charges may be deducted from the refund where applicable.

Vitamin4CA.com is operated by Cloverlight LLC.

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