About this trial
This randomized, double-blind, crossover trial (Phase IV) aims to compare the absorption of a novel permeability-enhanced oral vitamin B12 formulation (Ampli-B) versus standard oral vitamin B12 in 12 healthy adults aged 50 years and older. Each participant receives a single dose of each formulation in randomized sequence, separated by a minimum 10-day washout. The primary outcome is time to peak serum concentration (Tmax) of total and active vitamin B12 (holotranscobalamin). Secondary outcomes include Cmax and AUC parameters.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Males and females 50 years of age and older
BMI between 18 to 29.9 kg/m2
Females not of child-bearing potential, defined as those who have undergone a sterilization procedure (e.g. hysterectomy, bilateral oophorectomy, bilateral tubal ligation, complete endometrial ablation) or have been post-menopausal for at least 1 year prior to screening Or,
Sexual abstinence.
Disqualifiers
Individuals who are pregnant, breast feeding, or planning to become pregnant during the study
Allergy, sensitivity, intolerance, or dietary restriction preventing consumption of investigational products
History or current diagnosis of any clinically significant disease that may alter vitamin B12 absorption, accumulation, metabolism or excretion
Taking vitamin B12 supplements or a multivitamin supplement containing vitamin B12 within the prior 2 months from study product administration.
Trial design
Crossover
Treatments tested in this trial
Ampli-B
Dietary supplementParticipants will receive a single capsule containing 1mg vitamin B12 with a permeability enhancer.
Vitamin B12
Dietary supplementParticipants will receive a single capsule containing 1mg vitamin B12 .
Treatment groups
Trial outcomes
Primary outcomes
Tmax of total vitamin b12 and holoTC between AmpliB and standard vitamin B12.
Comparison of the time to peak maximum concentration (tmax) of total serum cyanocobalamin (total vitamin B12) and active cyanocobalamin \[holotranscobalamin (holoTC)\] between AmpliB and standard vitamin B12.
Secondary outcomes
Comparison of the absorption of the total vitamin B12 formulations by evaluating serum B12 Cmax
Comparison of the absorption of the total vitamin B12 formulations by evaluating the following serum vitamin B12 absorption parameters: • The maximum concentration (Cmax)
Comparison of the absorption of the total vitamin B12 formulations by evaluating serum B12 area under the concentration-time curve from 0h to 24hr
Comparison of the absorption of the total vitamin B12 formulations by evaluating the following serum vitamin B12 absorption parameters: • The area under the concentration-time curve from 0 h to time of last measured concentration (AUC0-24h)
Comparison of the absorption of the total vitamin B12 formulations by evaluating serum B12 area under the concentration-time curve from 0 h to infinity
Comparison of the absorption of the total vitamin B12 formulations by evaluating the following serum vitamin B12 absorption parameters: • The area under the concentration-time curve from 0 h to infinity (AUC0-∞)
Comparison of the absorption of the total vitamin B12 formulations by evaluating serum B12 terminal disposition rate constant
Comparison of the absorption of the total vitamin B12 formulations by evaluating the following serum vitamin B12 absorption parameters: • The terminal disposition rate constant (λ)
Other outcomes
Safety: Incidence of post-emergent adverse events (AE)
Incidence of post-emergent adverse events (AE)
Safety: Changes in vital signs (blood pressure)
Clinically relevant changes in vital signs blood pressure (BP) after acute supplementation
Safety: Changes in vital signs (heart rate)
Clinically relevant changes in vital signs heart rate after acute supplementation
Safety: Changes in FBC
Clinically relevant changes in FBC after supplementation.
Sponsors and contacts
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RDC Clinical Pty Ltd
Lead sponsor
dsm-firmenich Switzerland AG
Collaborator
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