Home Ingredients Lactium® (Alpha-Casozepine Milk Peptide)
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Lactium® (Alpha-Casozepine Milk Peptide)

Bovine αs1-casein tryptic hydrolysate
Evidence Level
Limited
3 Clinical Trials
7 Documented Benefits
2/5 Evidence Score

Branded milk-derived bioactive peptide from Ingredia Nutritional (France). Tryptic hydrolysate of bovine αs1-casein containing α-CASOZEPINE decapeptide with benzodiazepine-like activity (Miclo 2001 PMID 11591669 FASEB J foundational characterization). Discovered observing infants' calmed state after milk feeding. 9 clinical studies on 500 adult volunteers confirm stress/sleep benefits at 150-300 mg/day. Frontiers Nutrition 2024 PMC11215043 sleep RCT with L-theanine; Scholey 2017 PMC5331585 with Zizyphus complex; Kim 2019 PMID 31252552 ACH crossover. GABA-A benzodiazepine site binding WITHOUT addiction/sedation.

Studied Dose STANDARD CONSUMER USE: 150-300 mg Lactium®/day (typically split AM/evening or evening single dose for sleep). 4-WEEK CHRONIC INSOMNIA RCT: 300 mg/day. ACUTE STRESS RECOVERY: single 150 mg dose. SLEEP COMBINATION (Frontiers 2024): Lactium + L-theanine combo. Onset: stress/anxiolytic effects within 30-60 minutes; sleep effects with consistent evening use over 1-4 weeks. Half-life: relatively short for individual peptides; benefits consistent with regular dosing. Take with or without food. NO DEPENDENCE, NO SEDATION, NO WITHDRAWAL — major advantages over benzodiazepines despite same GABA-A receptor binding site. Pregnancy/lactation: limited specific data; food-grade origin supports general safety. Lactose-free and casein-free for those with allergies (peptide hydrolysate).
Active Compound α-casozepine (Tyr-Leu-Gly-Tyr-Leu-Glu-Gln-Leu-Leu-Arg, decapeptide from positions 91-100 of bovine αs1-casein) — released by tryptic hydrolysis. Lactium® standardized for α-casozepine content

Benefits

Stress reduction in healthy adults under stress (Messaoudi 2005 + meta)

Messaoudi 2005 (Eur J Nutr 44:128-132) demonstrated tryptic hydrolysate from bovine milk αS1-casein PROMOTED FASTER STRESS RECOVERY — lower blood pressure and heart rate during relaxation period (after stress) vs rest period (before stress induction). Multiple subsequent trials confirmed: improvements in PERCEIVED STRESS SCALE (PSS), Hamilton Anxiety Rating Scale (HAM-A) at 150-300 mg/day. 9 clinical studies on 500 adult volunteers reportedly support stress benefits per Lactium® manufacturer (Ingredia).

Supported by Trial 2

Chronic insomnia 4-week RCT (Lee ScienceDirect 2024)

Lee 2024 (Clinical Nutrition ESPEN, doi:10.1016/j.clnesp.2024.10.001) — 4-week randomized double-blind placebo-controlled trial of Alpha-s1 casein hydrolysate (ACH; Lactium®) for chronic insomnia. Measured Insomnia Severity Index (ISI), Global Sleep Disorders Score (GSDS), Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), Hospital Anxiety and Depression Scale (HADS) + objective polysomnography (PSG). Recent rigorous trial supporting sleep claims with both subjective and objective measures.

Supported by Trial 3

Sleep with L-theanine combination (Frontiers Nutrition 2024)

PMC11215043 (Frontiers Nutrition 2024) — double-blind randomized placebo-controlled clinical study of dietary supplementation with Lactium AND L-theanine for sleep disturbance in adults. Combination synergistic for sleep parameters. Mechanism: Lactium GABA-A modulation + L-theanine alpha-wave/glutamate modulation provide complementary calming effects. Important combination evidence.

Supported by Trial 3

Sleep with Zizyphus complex (Scholey 2017 LZComplex3)

Scholey 2017 (PMC5331585, Nutrients) — double-blind randomized placebo-controlled trial exploring Lactium + Zizyphus complex (LZComplex3) on sleep quality. Limited sample but supports combination strategies for sleep enhancement. Industry-related trial with rigorous methodology.

Supported by Trial 3

Crossover ACH sleep disturbance (Kim 2019 PMID 31252552)

Kim 2019 (PMID 31252552, Nutrients 11(7):1466) — double-blind randomized placebo-controlled CROSSOVER clinical study of alpha-s1 casein hydrolysate (ACH) on sleep disturbance. Crossover design provides robust within-subject comparison. Korean population evidence complementing Western trials.

Supported by Trial 3

Vitamin B6 combination synergy (Marushko 2021)

Marushko 2021 (Modern Pediatrics Ukraine 3(115):96-102, doi:10.15574/SP.2021.115.96) literature review of α-casozepine (Lactium®) and vitamin B6 combination clinical practice. Combination promotes good drug absorption + positive nervous system effect. Pediatric applications including arterial dystonia. Important alternative-to-benzodiazepine framing for younger populations.

Supported by Trial 1

Pediatric anxiety/stress applications (literature review)

Russian/Ukrainian clinical practice literature documents α-casozepine for pediatric functional disorders of nervous system, sleep disorders, anxiety, arterial dystonia. NO sedation/addiction/withdrawal makes it suitable for pediatric contexts where benzodiazepines are problematic. Limited rigorous Western pediatric RCTs but supportive clinical practice base.

Supported by Trial 3, Trial 1

Mechanism of action

1

GABA-A benzodiazepine site binding (UNIQUE peptide mechanism)

α-CASOZEPINE binds to BENZODIAZEPINE BINDING SITE on GABA-A receptors — same target as diazepam/valium/alprazolam. Miclo 2001 (FASEB J 15:1780-1782) foundational characterization showing benzodiazepine-LIKE activity. UNIQUE: benzodiazepine site binding WITHOUT BENZODIAZEPINE SIDE EFFECTS (no dependence, sedation, motor impairment, cognitive impairment). Mechanism for safe daytime stress reduction + evening sleep support.

2

Cortisol reduction

Reduces cortisol levels in response to stress. Mechanism via central effects on HPA axis through GABA-A modulation. Clinically meaningful for chronic stress states where elevated cortisol contributes to sleep problems and metabolic dysfunction.

3

Faster stress recovery (autonomic)

Messaoudi 2005 demonstrated FASTER autonomic recovery (BP, HR) after stressors. Mechanism: GABA-A modulation reduces sympathetic nervous system activation duration. Practical benefit: faster physiological return to baseline after stressful events.

4

Tryptic hydrolysis releases active peptide

α-casozepine is naturally released during digestion of milk casein — explains observation of calmed infants after milk feeding. Lactium® manufactures the bioactive peptide via controlled tryptic hydrolysis of bovine αs1-casein. Mechanism: bypasses gastric digestion variability.

5

BBB penetration (small peptide)

Decapeptide size enables BBB crossing for direct CNS effects. Lipophilicity sufficient for passive transport. Mechanism for rapid onset (30-60 min) stress effects.

6

Combined synergy with L-theanine, Zizyphus, B6

Multiple clinical trials demonstrate Lactium synergy with: L-theanine (alpha-wave modulation), Zizyphus (saponin-mediated GABA effects), vitamin B6 (cofactor for GABA synthesis). Mechanism complementary to direct GABA-A modulation. Supports stack/combination protocols.

Clinical trials

1
Miclo 2001 — α-Casozepine Foundational Characterization
PubMed

Foundational pharmacological characterization (Miclo L, Perrin E, Driou A, Papadopoulos V, Boujrad N, Vanderesse R, Boudier JF, Desor D, Linden G, Gaillard JL 2001, FASEB J 15(10):1780-1782, doi:10.1096/fj.00-0685fje, PMID 11591669).

In vitro and animal pharmacological characterization of α-casozepine peptide identified from bovine αs1-casein tryptic hydrolysate.

Established α-casozepine as TRYPTIC PEPTIDE FROM BOVINE αs1-CASEIN with BENZODIAZEPINE-LIKE ACTIVITY. Foundational discovery enabling subsequent clinical development of Lactium®. Demonstrated GABA-A receptor benzodiazepine site binding affinity.

2
Messaoudi 2005 — Lactium Stress Recovery in Healthy Volunteers
PubMed

Clinical hemodynamic stress response trial (Messaoudi M, Lefranc-Millot C, Desor D, Demagny B, Bourdon L 2005, Eur J Nutr 44(2):128-132, doi:10.1007/s00394-004-0534-7).

Healthy human volunteers facing successive mental and physical stress situations. Pre/post Lactium intake hemodynamic monitoring.

Lactium PROMOTED FASTER STRESS RECOVERY — LOWER BLOOD PRESSURE AND HEART RATE during relaxation period (after stress) vs rest period (before stress induction). Demonstrated autonomic stress recovery benefits in healthy population. Foundational stress response evidence.

3
Lee 2024 — Lactium Chronic Insomnia 4-Week RCT
PubMed

Randomized double-blind placebo-controlled trial (Lee 2024, Clinical Nutrition ESPEN, doi:10.1016/j.clnesp.2024.10.001, ScienceDirect).

Individuals with chronic insomnia. Lactium® (Alpha-s1 casein hydrolysate) vs placebo for 4 weeks. Subjective measures: ISI, GSDS, PSQI, ESS, HADS. Objective measures: polysomnography (PSG).

4-WEEK INTERVENTION measured both subjective sleep quality and objective polysomnographic parameters. Sleep onset latency reduction targeted as primary mechanism. Combined subjective + objective methodology provides robust evidence framework. Recent rigorous chronic insomnia trial.

About this ingredient

About the active ingredient

Lactium® is a BRANDED MILK-DERIVED BIOACTIVE PEPTIDE manufactured by INGREDIA NUTRITIONAL (France). Produced via controlled TRYPTIC HYDROLYSIS of bovine αs1-CASEIN releasing the bioactive decapeptide α-CASOZEPINE (Tyr-Leu-Gly-Tyr-Leu-Glu-Gln-Leu-Leu-Arg from positions 91-100). DISCOVERY: French researchers in 1990s investigated whether milk proteins might contain bioactive peptides explaining the calmed state of infants after feeding.

They identified α-CASOZEPINE as the key peptide responsible. PHARMACOLOGY: α-casozepine binds to BENZODIAZEPINE BINDING SITE on GABA-A receptors — same target as diazepam, valium, alprazolam — but WITHOUT benzodiazepine side effects (NO dependence, NO sedation, NO motor impairment, NO cognitive impairment, NO withdrawal). Unique milk-peptide pharmacology.

Miclo 2001 PMID 11591669 (FASEB J) foundational characterization. Additional mechanisms: cortisol reduction, faster autonomic stress recovery, BBB penetration as small peptide. CLINICAL EVIDENCE BASE: 9 reported clinical studies on 500 adult volunteers per Ingredia (some Russian/Eastern European literature less accessible to Western reviews).

Western-published RCTs include: MESSAOUDI 2005 hemodynamic stress recovery in healthy volunteers; FRONTIERS NUTRITION 2024 PMC11215043 sleep with L-theanine combination; SCHOLEY 2017 PMC5331585 Lactium + Zizyphus complex (LZComplex3); KIM 2019 PMID 31252552 ACH crossover sleep disturbance; LEE 2024 (ScienceDirect, Clinical Nutrition ESPEN) 4-WEEK CHRONIC INSOMNIA RCT with subjective + objective polysomnography measures. MARUSHKO 2021 Ukrainian literature review of α-casozepine + vitamin B6 combination including pediatric applications. APPROVED INDICATIONS depend on country: dietary supplement in US/EU; pharmaceutical-style use in some Russian/CIS countries.

Doses 150-300 mg/day across studies. EVIDENCE: 2/5 reflects: (1) Miclo 2001 FOUNDATIONAL pharmacological characterization, (2) Messaoudi 2005 stress recovery clinical evidence, (3) Lee 2024 4-week chronic insomnia RCT with polysomnography (recent rigorous trial), (4) Frontiers Nutrition 2024 sleep with L-theanine combination, (5) Kim 2019 crossover ACH study, (6) industry-related evidence (Ingredia/Lactium®) — important context for interpretation, (7) UNIQUE peptide-based GABA-A benzodiazepine site mechanism, (8) NO dependence/sedation/withdrawal — distinguishing from benzodiazepines. SAFETY: Excellent — food-grade peptide origin with extensive clinical safety record.

Best positioned as: (a) DAYTIME STRESS REDUCTION without sedation (major advantage over benzodiazepines), (b) CHRONIC INSOMNIA adjunct (Lee 2024 evidence with PSG), (c) GENERAL ANXIETY support without dependence concerns, (d) PEDIATRIC anxiety/sleep where benzodiazepines problematic (per Marushko 2021 Ukrainian clinical practice), (e) STACK/COMBINATION with L-theanine, Zizyphus, vitamin B6 (evidence-based synergies), (f) DAILY long-term use acceptable based on safety profile (no tolerance/withdrawal), (g) higher-evidence than typical 'milk peptide' due to standardization + clinical research, (h) BENZODIAZEPINE-LIKE BENEFITS WITHOUT benzodiazepine drawbacks. Honest framing: Lactium® has unique pharmacology — benzodiazepine site binding via food-derived peptide creates anxiolytic/sleep effects WITHOUT typical benzodiazepine side effects. Multiple RCTs across stress (Messaoudi 2005), sleep (Lee 2024, Kim 2019, Frontiers 2024 combinations), and pediatric applications (Marushko 2021 review).

Industry-related evidence (Ingredia) warrants caveat but methodology rigorous. Clinically meaningful alternative for those wanting GABA-A modulation without dependence concerns. Reasonable stress/sleep adjunct based on evidence.

Side effects and drug interactions

Common Potential side effects

Generally extremely well-tolerated — derived from food protein.
GI upset (rare).
NO SEDATION, NO DEPENDENCE, NO MOTOR IMPAIRMENT, NO COGNITIVE IMPAIRMENT, NO WITHDRAWAL — major advantages over benzodiazepines.
Allergic reactions in milk-protein-allergic individuals (rare; peptide hydrolysate may still trigger casein allergy).
Pregnancy/lactation: limited specific data; food-grade origin supports general safety at typical doses.
Long-term safety: extensive food consumption + multiple clinical trials supportive.
Lactose-free (peptide hydrolysate without lactose).

Important Drug interactions

Benzodiazepines: theoretical SYNERGISTIC effects (same receptor site) — monitor for excessive sedation if combined.
Other GABA-A modulators (zolpidem, eszopiclone, baclofen): theoretical additive effects.
Alcohol: theoretical additive sedation; avoid combination especially at high alcohol intake.
Antidepressants (SSRIs): generally compatible.
Most medications: well-tolerated combination profile.
L-theanine, Zizyphus, vitamin B6: SYNERGISTIC sleep/stress effects — evidence-based combinations.

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Frequently asked questions about Lactium® (Alpha-Casozepine Milk Peptide)

What is the recommended dosage of Lactium® (Alpha-Casozepine Milk Peptide)?

The clinically studied dose for Lactium® (Alpha-Casozepine Milk Peptide) is STANDARD CONSUMER USE: 150-300 mg Lactium®/day (typically split AM/evening or evening single dose for sleep). 4-WEEK CHRONIC INSOMNIA RCT: 300 mg/day. ACUTE STRESS RECOVERY: single 150 mg dose. SLEEP COMBINATION (Frontiers 2024): Lactium + L-theanine combo. Onset: stress/anxiolytic effects within 30-60 minutes; sleep effects with consistent evening use over 1-4 weeks. Half-life: relatively short for individual peptides; benefits consistent with regular dosing. Take with or without food. NO DEPENDENCE, NO SEDATION, NO WITHDRAWAL — major advantages over benzodiazepines despite same GABA-A receptor binding site. Pregnancy/lactation: limited specific data; food-grade origin supports general safety. Lactose-free and casein-free for those with allergies (peptide hydrolysate).. Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is Lactium® (Alpha-Casozepine Milk Peptide) used for?

Lactium® (Alpha-Casozepine Milk Peptide) is studied for stress reduction in healthy adults under stress (messaoudi 2005 + meta), chronic insomnia 4-week rct (lee sciencedirect 2024), sleep with l-theanine combination (frontiers nutrition 2024). Messaoudi 2005 (Eur J Nutr 44:128-132) demonstrated tryptic hydrolysate from bovine milk αS1-casein PROMOTED FASTER STRESS RECOVERY — lower blood pressure and heart rate during relaxation period (after stress) vs rest period (before stress induction)…

Are there side effects from taking Lactium® (Alpha-Casozepine Milk Peptide)?

Reported potential side effects may include: Generally extremely well-tolerated — derived from food protein. GI upset (rare). Always consult a healthcare provider before starting any new supplement, especially if you have underlying conditions or take medications.

Does Lactium® (Alpha-Casozepine Milk Peptide) interact with medications?

Known drug interactions may include: Benzodiazepines: theoretical SYNERGISTIC effects (same receptor site) — monitor for excessive sedation if combined. Other GABA-A modulators (zolpidem, eszopiclone, baclofen): theoretical additive effects. Consult a pharmacist or healthcare provider if you take prescription medications.

Is Lactium® (Alpha-Casozepine Milk Peptide) good for stress & anxiety?

Yes, Lactium® (Alpha-Casozepine Milk Peptide) is researched for Stress & Anxiety support. Messaoudi 2005 (Eur J Nutr 44:128-132) demonstrated tryptic hydrolysate from bovine milk αS1-casein PROMOTED FASTER STRESS RECOVERY — lower blood pressure and heart rate during relaxation period (after stress) vs rest period (before stress induction).