LMP-melatonin produces greater formulation-dependent effects than conventional melatonin on caffeine-evoked cortical electrical activity and pentobarbital-induced sedative-hypnotic responses in mice
In male BALB/c mice, a lipid-multiparticulate (LMP) melatonin formulation attenuated caffeine-induced increases in cortical spike frequency and altered ECoG amplitude more effectively than conventional melatonin, with strongest effects at 20 mg/kg. LMP-melatonin also reduced latency to and prolonged duration of pentobarbital-induced loss of righting reflex compared to conventional melatonin. However, the study did not assess pharmacokinetic exposure, physiological sleep stages, or neuroprotection.
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LMP-melatonin produces greater formulation-dependent effects than conventional melatonin on caffeine-evoked cortical electrical activity and pentobarbital-induced sedative-hypnotic responses in mice The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 24/100 (low).
The Claim
LMP-melatonin produces greater formulation-dependent effects than conventional melatonin on caffeine-evoked cortical electrical activity and pentobarbital-induced sedative-hypnotic responses in mice
This conclusion is most relevant to: Eighty-four male BALB/c mice.
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Effects of Melatonin Formulations on Caffeine-Evoked Cortical Activity and Pentobarbital-Induced Sleep in Mice. (International journal of molecular sciences, 2026) —
How It Works
The proposed biological pathway:
- ▸Caffeine increases cortical spike frequency and alters ECoG amplitude, along with unfavorable changes in neurochemical and redox markers.
- ▸Melatonin formulations attenuate these caffeine-induced changes in a dose-dependent manner.
- ▸LMP-melatonin modulates ECoG activity, biochemical markers, neurotransmitter-receptor expression, and IL-6/TNF-α outcomes more than conventional melatonin.
- ▸LMP-melatonin enhances sedative-hypnotic response to pentobarbital (reduced latency, increased duration).
Who Might Benefit
Evidence fit by population:
- ▸Eighty-four male BALB/c mice
Recommended Dose
20 mg/kg (high dose LMP-melatonin showed strongest effects)
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Pharmacokinetic exposure was not assessed, so enhanced bioavailability is not directly established.
- ▸Physiological sleep stages, sleep architecture, and sleep quality were not measured.
- ▸Direct measures of neuronal injury were not evaluated, so neuroprotection cannot be concluded.
- ▸Animal study (mice) with acute pharmacological paradigms, not generalizable to humans.
Frequently Asked Questions
What is LMP-melatonin?▼
LMP-melatonin is a lipid-multiparticulate formulation of melatonin designed to improve oral delivery, compared to conventional melatonin.
How does LMP-melatonin affect caffeine-induced cortical activity?▼
In mice, LMP-melatonin at 20 mg/kg attenuated caffeine-induced increases in cortical spike frequency and altered ECoG amplitude more effectively than conventional melatonin.
Does LMP-melatonin improve sleep in this study?▼
LMP-melatonin enhanced pentobarbital-induced sedative-hypnotic responses (reduced latency to sleep and prolonged sleep duration), but physiological sleep stages were not measured.
Is LMP-melatonin more effective than conventional melatonin?▼
Yes, in this mouse study, LMP-melatonin showed greater effects on cortical activity, biochemical markers, and sedative-hypnotic responses compared to conventional melatonin.
References
- 1.Sahin N, Yabas M, Er B, Erten F, Kursun OED, Cikim IG, Kaplan B, Erek G, Ozmen B, Orhan C, Kilic E, Sahin K. “Effects of Melatonin Formulations on Caffeine-Evoked Cortical Activity and Pentobarbital-Induced Sleep in Mice..” International journal of molecular sciences, 2026. PMID: 42589559 DOI: 10.3390/ijms27156906