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Source Naturals, B-1, High Potency, 500 mg, 100 Tablets

Source Naturals, B-1, High Potency, 500 mg, 100 Tablets

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  • Expiration Date: Aug 2020
  • Shipping Weight:
    0.41 lbs
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  • Product Code: SNS-00888
  • UPC Code: 021078008880
  • Package Quantity: 100 Tablets
  • Dimensions:
    2.4 x 2.4 x 4.4 in, 0.35 lbs
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Product Overview


  • Vitamin Supplement

B1 is intimately involved in many aspects of nerve health and function. The active co-enzyme form of B-1, thiamin pyrophosphate (TPP), is necessary for energy production and is essential for the formation of acetylcholine, a major neurotransmitter. Magnesium plays a role in neuromuscular transmission and activity, promoting muscle relaxation. A highly processed "junk food" diet, excessive alcohol intake, and exhaustive exercise may increase the need for B-1.

Suggested Use

1 tablet daily

Other Ingredients

Stearic acid, modified cellulose gum, acacia gum, magnesium stearate, ans silica.

Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance.


Note: If you are pregnant, may become pregnant or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving %DV
Thiamin (vitamin B-1) 500 mg 33,333%
Magnesium (as magnesium citrate, malate, oxide & succinate) 100 mg 25%
iHerb Customer Reviews

Great support for your thyroid

Posted by 4817185810220869137 on Mar 28, 2017 | Verified Purchase

I bought this after reading up on thyroid support. It was recommended as vital for healing for Hashimotos.

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High Potency Vitamin B 1

Posted by 5580188369116401134 on Mar 16, 2017 | Verified Purchase

I buy this product from iHerb because it is 500 mg which I can't find that potency here in Australia. I drink a fair amount of alcohol and take this product daily. The price is worth buying it from iHerb.

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Works for Parkinson's!

Posted by Reviewer1797456 on Mar 08, 2017 | Verified Purchase

Gave it to a man in his late 70s who was developing the typical Parkinson's symptoms after reading that HIGH DOSE B1 is very effective in such cases. Within days he was thinking clearer, speaking clearer, and balance was better, just like they said. Look up the articles, it's for real. 3 a day worked for him, but they say to go up to 5 a day if need be.

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Good product

Posted by 4627376681991005583 on Mar 02, 2017 | Verified Purchase

Dood product

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Posted by Reviewer3298857 on Jan 30, 2017 | Verified Purchase

Doesn't even reveal which form of thiamin. Upon researching, it is mononitrate, taking 500mg of this synthetic form is bound to accumulate in the body and put stress on liver, kidneys. Throwing this in the bin... Very disappointing product.

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