Soft gel capsules improve melatonin's bioavailability in humans

Area of Science:

• Pharmacology
• Drug Delivery Systems

Background:

• Oral bioavailability is critical for drug efficacy and predictable patient response.
• Melatonin's bioavailability has been investigated across various dosages and formulations.
• Poor oral absorption can limit therapeutic effectiveness.

Purpose of the Study:

• To evaluate the pharmacokinetic (PK) profile of a novel melatonin soft gelatin capsule.
• To compare the absorption and bioavailability of the new soft gel formulation against conventional melatonin powder.
• To identify an improved pharmaceutical form for melatonin with better absorption.

Main Methods:

• A randomized study involving 60 healthy volunteers.
• Administration of melatonin in powder (1 mg and 3 mg) and soft gel capsule (1 mg) forms.
• Analysis of plasma melatonin concentrations to determine PK profiles and bioavailability.

Main Results:

• The melatonin soft gel capsule demonstrated comparable PK parameters to higher doses of melatonin powder.
• Bioavailability of melatonin was significantly improved with the soft gel capsule formulation.
• Reduced dosage in soft gel form achieved comparable or better absorption.

Conclusions:

• Melatonin soft gel capsules enhance oral bioavailability in humans, even at reduced doses.
• This improved bioavailability supports the potential for wider clinical application of melatonin.
• The soft gel formulation offers a promising alternative for melatonin supplementation.