Restless Legs Belgium 2025: Dopamine, Spinal NF-kB, Iron & Ginger

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INTI — Organic Ginger, Turmeric & Lemon Shot

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The syndrome of ginger restless legs (RLS/RLS) affects 5-10% of Belgians (2-4% moderate-severe form requiring treatment). Nocturnal peak: symptoms mainly appear between 10 p.m. and 4 a.m. Mechanism: dopaminergic deficit in the descending spinal pathways (periaquaeductal gray matter -> dorsal horn) + glutamatergic hyperexcitability -> uncomfortable paresthesias/dysesthesias -> irresistible need to move. NF-kB intervenes: anti-inflammatory-science-use">ginger-turmeric-black-pepper-chronic-pain">natural low-grade spinal anti-inflammatory amplifies central sensitization, hyperalgesia and discomfort signals. The ginger iron (ferritin < 50-75 ng/mL) deteriorates the synthesis of dopamine ginger (iron-dependent tyrosine hydroxylase) and amplifies neuronal NF-kB. 6-Gingerol: dopamine neuroprotection (MAO-B partial inhibition), reduction of spinal NF-kB, improvement of intestinal iron absorption via optimal gastric environment. GIMBER = RLS worsening by sugar: fructose -> uric metabolism -> ginger uric acid inhibits DAT (dopamine transporter) -> RLS worsens. INTI: 1.19g of sugar per 100ml.

RLS & the spinal dopaminergic system

RLS is not a disease of the legs -- it is a disease of the central nervous system. Descending dopaminergic pathways (A11, A13, periaquaeductal gray matter) normally inhibit nociceptive neurons in the spinal dorsal horn. When dopamine is deficient in these pathways, the neurons of the dorsal horn become hyperexcitable, generating signals of intense discomfort in the lower limbs, particularly at night when dopaminergic tone is physiologically at its lowest (dopaminergic circadian trough between 10 p.m. and 4 a.m.).

Postman RLS link Nutritional intervention
Iron deficiency (ferritin <75) Tyrosine hydroxylase inactive -> DA down Bioavailable iron + vitamin C
Spinal NF-kB (low grade) Amplified central awareness Gingerol IKKbeta -45%
High uric acid (fructose) DAT (DA transporter) inhibits Avoid fructose (GIMBER!)
Intestinal dysbiosis Serotonin (5-HT) DA down precursor Preobiotic Ginger

Fructose and RLS: the little-known link

GIMBER = 35g sugar/100ml including fructose (2nd ingredient).
Fructose is metabolized to uric acid in the liver-liver-protection-nash">liver (xanthine oxidase). Elevated uric acid:
- Inhibits the dopamine transporter (DAT) -> less DA reuptake -> desensitization
- Increase the ginger stress neuronal oxidative via NADPH oxidase -> spinal NF-kB
- Deteriorates the bioavailability of iron (metabolic competition)
INTI: 1.19g of sugar per 100ml, without excess fructose. No DAT dopaminergic aggression.

Iron, dopamine and ginger: the RLS triad

Ginger contributes to the RLS ecosystem via three mechanisms:

  1. Iron absorption: the gastric acidity of ginger (HCl stimulation) improves the conversion Fe3+ -> Fe2+ (absorbable form) in the duodenum
  2. Dopamine neuroprotection: 6-shogaol partially inhibits MAO-B (dopamine degrading enzyme), prolonging its spinal synaptic half-life
  3. Spinal NF-kB: reduction of central sensitization which amplifies RLS symptoms
Medical note: INTI does not replace RLS treatments (pramipexole, ropinirole, gabapentin, pregabalin). Ferritin <50ng/mL should be corrected with prescribed iron supplementation. Do not self-medicate RLS -- consult a neurologist for the etiological assessment.
At what level of ferritin should be supplemented in RLS?

International guidelines (IRLSSG) recommend a target ferritin of 75-100 ng/mL for RLS patients, even if this value is "normal" by laboratory standards. Below 50 ng/mL, oral supplementation (ferrous sulfate) is generally recommended, often with vitamin C to improve absorption. Below 25 ng/mL with severe RLS, IV iron (Ferinject) may be considered.

Does RLS increase risk? cardiovascular?

Yes -- severe RLS (IRLS score > 20) is associated with a 30-40% increased cardiovascular risk, independent of other risk factors. The probable mechanism: fragmentation of ginger and sleep-insomnia-quality-recovery">sleep -> nocturnal sympathetic activity -> cardiovascular NF-kB. Treatment of RLS reduces this risk. Reduction of systemic NF-kB (including via gingerol) can help reduce this overall risk.

INTI: Dopamine and spinal NF-kB support

1.19g of sugar per 100ml | Fructose free | Iron + DA | organic ginger in Belgium

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