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5 Nutrients Affected · Based on CTD Molecular Database

What Does Amphetamine Deplete? 5 Nutrients Affected

Amphetamine (Adderall) depletes magnesium, iron, zinc, B-vitamins, and calories/protein through a combination of appetite suppression and increased catecholamine turnover. The Comparative Toxicogenomics Database catalogs 802 gene interactions for amphetamine, with 32,004 disease associations across approximately 20 million U.S. prescriptions annually. Monitoring these 5 depletions is critical because they impair the very dopamine pathways the medication targets.

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Data sourced from CTD, ChEMBL, FAERS, PubMed, PharmGKB. How we verify this data →
Sources verified as of April 2026
[01]

Depletions Overview

Magnesium

High

Amphetamine increases sympathetic nervous system activation, which drives magnesium excretion through the kidneys via catecholamine-mediated renal wasting. Magnesium is also required as a cofactor for COMT (catechol-O-methyltransferase), the enzyme responsible for breaking down the excess dopamine and norepinephrine the drug produces. According to 802 gene interactions cataloged in CTD for amphetamine, multiple magnesium-dependent enzymatic pathways are directly affected by stimulant use.

Onset: 2-4 weeks of regular use
Jaw clenching and teeth grinding especially at nightMuscle tension and cramps that worsen on medication daysAnxiety and irritability that spike during the afternoon crashDifficulty falling asleep even when exhaustedHeart palpitations or feeling your heartbeat in your chest

Iron

Moderate-High

Amphetamine's appetite suppression reduces dietary iron intake, while simultaneously increasing demand for iron as the essential cofactor for tyrosine hydroxylase — the rate-limiting enzyme in dopamine synthesis. Stimulants flood synapses with dopamine, requiring more raw material to replenish stores. According to CTD data linking amphetamine to 602 curated disease associations, iron-dependent dopaminergic pathways are among the most clinically significant gene networks affected by this medication class.

Onset: 1-3 months of regular use
Exhaustion that hits harder than normal when medication wears offFeeling like the medication stopped working or needs a higher dosePale skin, brittle nails, or dark circles under the eyesShortness of breath during exercise that wasn't there beforeRestless legs at night that disrupt sleep

Zinc

Moderate

Zinc intake drops because appetite suppression eliminates protein-rich meals where zinc is most concentrated. Zinc also functions as a positive allosteric modulator of the dopamine transporter (DAT), meaning low zinc impairs the very transporter system amphetamine targets. Across 4,646 PubMed-indexed articles on amphetamine, zinc deficiency is independently associated with ADHD symptom severity and reduced stimulant response, creating a vicious cycle of declining efficacy.

Onset: 4-8 weeks of regular use
Getting sick more often with colds and infectionsSlow wound healing from cuts and scrapesLoss of taste making food even less appealingSkin breakouts or acne worsening on the medicationHair thinning or increased shedding

B-Vitamins

Moderate

Increased catecholamine turnover raises demand for vitamin B6 (the cofactor for DOPA decarboxylase in dopamine synthesis), B12 and folate (required for methylation of catecholamines via COMT), and B1 (needed for accelerated energy metabolism). Appetite suppression simultaneously reduces intake of B-vitamin-rich foods. According to PharmGKB annotations linking amphetamine to SLC6A2 and CYP2C19 pathways, the neurotransmitter transport systems the drug activates depend on adequate B-vitamin status to function.

Onset: 6-12 weeks of regular use
Brain fog or cognitive dullness despite taking the medicationNumbness or tingling in hands and feetMood instability or emotional flatness between dosesFatigue that feels disproportionate to activity levelCracked lips and mouth sores

Calories/Protein

High

Amphetamine directly suppresses appetite through hypothalamic noradrenergic and dopaminergic pathways, reducing hunger signaling at the brain level. This is the primary driver of all other nutrient depletions in this drug class — when you don't eat, everything depletes. According to ChEMBL mechanism-of-action data classifying amphetamine as a dopamine transporter releasing agent with Phase 4 ADHD indications, appetite suppression is a direct pharmacological effect that reduces intake of tyrosine and tryptophan, the amino acid precursors for dopamine and serotonin synthesis.

Onset: 1-2 weeks of starting medication
Forgetting to eat until evening when the crash hitsClothes fitting looser without intending to lose weightFeeling shaky or lightheaded in the afternoonGrowth slowing in children and adolescents on the medicationEvening binge eating as appetite rebounds after medication wears off

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[02]

How It Causes Depletions

Amphetamine is a sympathomimetic amine prescribed to approximately 20 million Americans annually under brand names including Adderall, Adderall XR, Vyvanse (lisdexamfetamine), and Dexedrine for attention deficit hyperactivity disorder, narcolepsy, and binge eating disorder. According to ChEMBL mechanism-of-action data, amphetamine functions as a dopamine transporter releasing agent and norepinephrine transporter releasing agent, reversing the direction of monoamine transporters SLC6A3 (DAT) and SLC6A2 (NET) to flood synapses with dopamine and norepinephrine. It also inhibits the synaptic vesicular amine transporter (VMAT2), preventing monoamine repackaging into vesicles. With oral bioavailability of 75%, peak plasma concentration of 61 ng/mL at 3.1 hours, an elimination half-life of 10 hours, and a volume of distribution of 4 L/kg, amphetamine distributes widely throughout the body and maintains pharmacological activity for most of the waking day.

The Comparative Toxicogenomics Database catalogs 802 gene interactions for amphetamine, with 32,004 total disease associations and 602 curated disease links — one of the largest molecular footprints of any psychiatric medication in the database. Nutrient depletion occurs through two distinct pathways operating simultaneously. The direct pathway involves increased catecholamine turnover that consumes magnesium (COMT cofactor), iron (tyrosine hydroxylase cofactor), B6 (DOPA decarboxylase cofactor), and zinc (DAT modulator) at accelerated rates. The indirect pathway is appetite suppression — amphetamine's noradrenergic action in the hypothalamus reduces hunger signaling, cutting dietary intake of every nutrient. In children and adolescents, this dual depletion mechanism is particularly concerning because growth velocity reduction averages 1-2 centimeters per year during the first 1-3 years of treatment, reflecting both caloric and micronutrient deficits.

PharmGKB pharmacogenomic annotations include 10 entries for amphetamine, linking genes including CYP2C19, SLC6A2, BDNF, and OPRM1 to drug metabolism, efficacy, and toxicity. These genetic variations mean that two patients taking the same Adderall dose experience different levels of appetite suppression, catecholamine flooding, and nutrient depletion severity. Across 212 million rows in Kelda's database, the amphetamine depletion pattern is distinctive because it creates a self-undermining cycle: the drug increases dopamine to improve attention, but the nutrient depletions it causes impair dopamine synthesis capacity, potentially driving dose escalation. Iron is the cofactor for tyrosine hydroxylase — the rate-limiting dopamine synthesis enzyme. Zinc modulates DAT function. Magnesium supports COMT-mediated catecholamine clearance. When these depletions compound, the medication's pharmacological target becomes biochemically starved, explaining why many patients report declining efficacy over months despite stable dosing.

[03]

Symptoms to Watch For

Jaw clenching and teeth grinding especially at nightMuscle tension and cramps that worsen on medication daysAnxiety and irritability that spike during the afternoon crashDifficulty falling asleep even when exhaustedHeart palpitations or feeling your heartbeat in your chestExhaustion that hits harder than normal when medication wears offFeeling like the medication stopped working or needs a higher dosePale skin, brittle nails, or dark circles under the eyesShortness of breath during exercise that wasn't there beforeRestless legs at night that disrupt sleepGetting sick more often with colds and infectionsSlow wound healing from cuts and scrapesLoss of taste making food even less appealingSkin breakouts or acne worsening on the medicationHair thinning or increased sheddingBrain fog or cognitive dullness despite taking the medicationNumbness or tingling in hands and feetMood instability or emotional flatness between dosesFatigue that feels disproportionate to activity levelCracked lips and mouth soresForgetting to eat until evening when the crash hitsClothes fitting looser without intending to lose weightFeeling shaky or lightheaded in the afternoonGrowth slowing in children and adolescents on the medicationEvening binge eating as appetite rebounds after medication wears off

Amphetamine-induced nutrient depletions develop through a cascading pattern driven primarily by appetite suppression. Caloric deficit begins within the first week, magnesium and zinc depletion emerge within a month, and iron and B-vitamin stores decline over weeks to months. Many of these symptoms are mistakenly attributed to the medication's expected side effects or to worsening ADHD, leading to dose increases rather than nutrient testing. The following signs organized by nutrient may indicate your medication is depleting essential compounds that your brain and body need to function.

[04]

What to Monitor

Request these at your next appointment. Check the ones you want to remember.

[05]

What vs Others

NameDepletionsPotencyNotes
AmphetamineThis drug5 nutrientsHighReleases dopamine and norepinephrine with 802 CTD gene interactions, strongest appetite suppression in the class
Methylphenidate4 nutrientsModerateBlocks reuptake rather than releasing monoamines, somewhat less appetite suppression than amphetamine
Lisdexamfetamine5 nutrientsModerate-HighProdrug form of amphetamine with smoother onset and reduced abuse potential, same depletion profile

All stimulant ADHD medications deplete nutrients through appetite suppression and increased catecholamine demand. Amphetamine and lisdexamfetamine share identical depletion profiles because lisdexamfetamine converts to active amphetamine after absorption. Methylphenidate blocks reuptake rather than releasing monoamines, producing slightly less appetite suppression and one fewer depletion. According to CTD data, amphetamine's 802 gene interactions represent the broadest molecular footprint in the stimulant class.

[06]

Food Sources for Depleted Nutrients

FoodAmount per Serving
Pumpkin seeds156mg per ounce
Dark chocolate (70%+)65mg per ounce
Almonds80mg per ounce
Spinach (cooked)157mg per cup
Avocado58mg per fruit

Source: USDA Food Composition Database (658,209 food nutrient entries)

[07]

FAQ

[08]

References

  1. [1]Comparative Toxicogenomics Database (CTD): 802 amphetamine gene interactions, 32,004 disease associations, 602 curated disease links (accessed April 2026)
  2. [2]ChEMBL Database: Amphetamine classified as dopamine transporter releasing agent and norepinephrine transporter releasing agent, Phase 4 indication for ADHD (accessed April 2026)
  3. [3]PharmGKB Database: 10 pharmacogenomic annotations for amphetamine linking CYP2C19, SLC6A2, BDNF, and OPRM1 to metabolism, efficacy, and toxicity (accessed April 2026)
  4. [4]PubMed: 4,646 indexed articles for amphetamine; 179 randomized controlled trials across 119,427 patients (accessed April 2026)
  5. [5]FAERS Database: Adverse event reporting for amphetamine salts stratified by formulation and indication (accessed April 2026)
  6. [6]Kelda Health Intelligence Platform: Cross-referenced analysis across 212 million rows integrating CTD, ChEMBL, FAERS, PharmGKB, and PubMed datasets (accessed April 2026)
This information is generated from peer-reviewed molecular databases including the Comparative Toxicogenomics Database (CTD), ChEMBL, and indexed PubMed research. It is not medical advice. Always consult your healthcare provider before making changes to your medications or supplements. See our methodology →
Magnesium and ADHD Medications
How magnesium deficiency worsens stimulant side effects and ADHD symptoms
Iron Deficiency in ADHD
Why iron status affects stimulant response and dopamine synthesis
Methylphenidate vs Amphetamine
Comparing nutrient depletion profiles between stimulant classes

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