Vitamin B1 (Thiamin)

The spark plug of carbohydrate metabolism — small store, steady need

All articles checked for accuracy against the GB NHC Register and all sources have citations with verified links to their relevant studies.

Thiamin (vitamin B1) is a small, water‑soluble vitamin that plays a clear biochemical role in how the body processes carbohydrate. Its history — from the discovery linked to beriberi to modern dietary labelling — shows why it’s treated as an essential nutrient rather than a marketing flourish.

This article explains what thiamin does in the body, why regular intake matters, typical dietary sources and reference amounts used on European labels, and how WellsparQ includes thiamin across its product range. It also notes the regulatory position on health claims for vitamins and the safety context for thiamin.

Ingredient Snapshot

What it is

A water‑soluble B vitamin involved in cellular energy processes.

Where from

Vitamin B1 (thiamin), found in wholegrains, legumes, nuts and fortified cereals.

Known for

Acts as a coenzyme in carbohydrate energy metabolism and has a modest body store.

In WellsparQ

• VitaralDaily3651.1 mg (100% NRV)
• Vanilla Lunch1.1 mg
• Workout Recovery Matrix0.4 mg

For reference

• EU labelling NRV1.1 mg/day

Thiamin was the first B vitamin to be isolated, and its discovery is tied to one of the classic stories of nutrition science: beriberi, a deficiency disease that appeared where polished white rice replaced the wholegrain. That history is a useful reminder of what thiamin does — it sits at the heart of how the body turns carbohydrate into usable energy — and of why we treat it as a genuine essential, not a marketing flourish. At WellsparQ thiamin appears in a small number of formulas, declared to the milligram.

What thiamin does

Thiamin (vitamin B1) is a water-soluble B vitamin. Inside the body it is converted to its active form, thiamin diphosphate, which acts as a coenzyme for a handful of enzymes central to energy metabolism — including the pyruvate dehydrogenase and alpha-ketoglutarate dehydrogenase complexes and transketolase ^¹. In plain terms, thiamin is a required part in the machinery that releases energy from carbohydrates and, to a lesser degree, from branched-chain amino acids ^¹². It also has a role in the normal function of nerves ^¹.

The body holds only a modest store of thiamin, and it turns over relatively quickly, so a regular dietary supply matters ^¹². This is a description of the vitamin's biology, not a promise attached to any product.

Deficiency — mostly historical, but not gone

Classic thiamin deficiency causes beriberi (affecting the nerves and the heart) and, in a different setting, Wernicke–Korsakoff syndrome, a serious neurological disorder ^²³. In wealthy countries frank deficiency is uncommon, but it still appears in specific circumstances — chronic heavy alcohol use is the best known, alongside certain malabsorption states and prolonged inadequate intake ^¹²³. These are clinical facts, discussed here as background rather than as anything a food supplement is offered to treat.

How much, and from where

The Nutrient Reference Value used on European labels is 1.1 mg per day ^⁴. EFSA expresses requirements in relation to energy intake, reflecting thiamin's role in carbohydrate metabolism, and sets population reference intakes in a similar everyday range ^⁵.

Thiamin is widespread but rarely concentrated. Good plant sources include wholegrains and fortified cereals, legumes, nuts, seeds and some vegetables; wholegrain and fortified products are the mainstay in many diets ^¹⁶. Because milling removes the thiamin-rich outer layers of grain, refined cereals are often fortified to put it back ^¹.

Where thiamin appears in the WellsparQ range

Thiamin is a supporting nutrient in a few multi-ingredient formulas, dosed at or below the reference value.

Source: WellsparQ Supplements Database. The thiamin used in these formulas is a defined vitamin and sits comfortably in vegan products.

Safety

Thiamin has a reassuring safety profile. Because it is water-soluble and readily excreted, there is no evidence of harm from high oral intakes, and EFSA did not set a Tolerable Upper Intake Level for it ^⁵. The WellsparQ doses are modest in any case — at or below the NRV. As with any supplement, anyone pregnant, breastfeeding or managing a health condition should speak to a GP or pharmacist about their needs.

Where it fits your day

Thiamin is not a nutrient you notice. It is one of the steady background essentials — needed daily, stored only briefly, and quietly involved in turning what you eat into energy the body can use. In the WellsparQ range it does exactly that supporting job: present in sensible, fully declared amounts, mostly inside daily and meal formulas, and never asked to be a headline it was never meant to be.

Rooted in nature. Backed by research.