Best vitamin b1 supplements, ranked

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AI-generated summary · updated August 30, 2026 · verify details before purchase.

1. 

   1 Best budget pick Nature's Bounty

   Nature's Bounty Vitamin B1 1000mg

   ★★★★★4.7/5 $19.94

   High potency 1000mg per tablet, affordable and widely available.

   • High potency
   • Affordable price
   • Widely available

   • High pill count

   View on Amazon manufacturer site
2. 

   2 Best overall NOW Foods

   NOW Foods Thiamine 1000mg

   ★★★★★4.6/5 $5.95

   Reputable brand offering 1000mg capsules at a great price.

   • Reputable brand
   • Capsule form
   • Great price

   • High pill count

   View on Amazon manufacturer site
3. 

   3 Premium quality Solgar

   Solgar Thiamine 1000mg

   ★★★★☆4.5/5 $31.51

   Non-GMO, GMP certified vitamin B1 for premium users.

   • High quality
   • Non-GMO
   • GMP certified

   • Pricier

   View on Amazon manufacturer site

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