Nutricost TTFD Thiamine 100mg 120 Capsules Review

Nutricost TTFD Thiamine (Vitamin B1) is a dietary supplement that provides 100 milligrams of Thiamine Tetrahydrofurfuryl Disulfide, often shortened to TTFD, in each serving. The bottle contains 120 easy to take capsules, which equals 120 servings per bottle, so the label is designed for one capsule taken per day. TTFD is presented on this page as a fat soluble form of thiamine, also known as vitamin B1. The product page states that the formula includes magnesium to complement the TTFD for daily nutritional support. Nutricost describes the capsules as vegan friendly, gluten free, and made without GMOs. The product is manufactured in an NSF Certified, GMP Compliant, and FDA Registered facility, which the page presents as a sign of production quality and consistency. Nutricost also states that its products are third-party tested by an independent, accredited laboratory to help verify that what appears on the label is what is in the bottle. The company says its products are made in the USA using globally sourced ingredients in a GMP-compliant facility. The page lists a regular price of $21.97 and notes that the item is eligible for HSA and FSA payment for qualified customers, with a guest checkout and health assessment step described on the page. Nutricost offers a 60-day money-back guarantee on all orders. Under that guarantee, the company says it will refund 100 percent of the purchase price, minus shipping and handling, if a customer is not completely satisfied. Returns are accepted within 60 days of the order date, and items after the first bottle must be in new condition to be eligible for refund or exchange. Clearance items are not eligible for return or exchange. The page also explains that customers may purchase a free returns and exchange protection option at checkout for $2.98 to receive a prepaid return label. Shipping information states that orders are usually processed within one to two business days, depending on production, order size, and availability. Once shipped, delivery usually takes three to five business days within the United States. International orders may take longer and are subject to duties, taxes, customs, and other fees that the buyer is responsible for. The page also notes that the company does not refund international packages that are refused. Nutricost free continental U.S. shipping applies to orders above $59 according to the site banner. The page states that the product is supported by customer service through a phone line and an email address for questions about products and services.

Product Focus: Stress and CalmAlso covers:BrainHormones
Tier ⓘ
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions
Cost per month
$6

Study, Trial or Testing Result Summary

MembersHuman studies

7 of these 41 human studies gave the ingredient by drip or injection, not by mouth.

This product provides 100 milligrams of thiamine tetrahydrofurfuryl disulfide, a vitamin B1 derivative also called fursultiamine, along with a trace 10 milligram dose of magnesium. Direct human trials testing fursultiamine for stress or calmness are lacking. …

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Review Totals and Summary

Members162 reviews
162 reviews · Vitacost 89 · Bermuda.ubuy 42 · Walmart 14 · Ebay 13 · Nutricost website 4

Customers have rated Nutricost TTFD Thiamine 100mg 120 Capsules about 107 times across various stores, with star-rated reviews giving it 4 or 5 stars. This indicates a generally reception for the product. **What buyers say it did for them** users report a range of from taking this TTFD Thiamine. …

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Biohacker Summary

MembersWhat our biohacker panel says

The panel is split on vitamin B1 (thiamine), the main ingredient here, and only some of the ten spoke about it. Three of them it: one links it to swollen legs and ankles, and another calls it extremely important for brain function and points to lean pork and beef as sources. …

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RAL Summary

MembersThe tier and why

The grade rests on general thiamine trials that did test fursultiamine itself and showed results rather than , while magnesium is only present in a trace amount. …

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Nervous system, Endocrine system. Combine with and possible side are for members.

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Supplement Facts

Magnesium 10 mg · Thiamine Tetrahydrofurfuryl Disulfide 100 mg
Supplement Facts
Serving Size 1 Capsule
Servings Per Container 120
Amount Per Serving% Daily Value
Magnesium (as magnesium taurate)10 mg2%
Thiamine Tetrahydrofurfuryl Disulfide (TTFD)(as Thiamine)100 mg†
† Daily Value not established.

Other ingredients: Rice flour, hypromellose (cellulose) capsule, magnesium stearate (vegetable source).

Directions: As a dietary supplement, take 1 capsule daily with 8-12 oz of water or as directed by your healthcare professional.

Label source: Nutricost · Report a label change

Where to Buy

Nutricost · Walmart · Vitacost
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Graded October 28, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.