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Nicotinamide (vitamin B3) – diet and exercise in the context of prolonged outpatient rehabilitation – a randomized, placebo-controlled, double-blind pilot study

Nicotinamide (vitamin B3) – diet and exercise in the context of prolonged outpatient rehabilitation – a randomized, placebo-controlled, double-blind pilot study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
DRKS
Registry ID
DRKS00031318
Enrollment
30
Registered
2023-07-19
Start date
2023-10-16
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

I25.1

Interventions

Group 1: Intervention group Nicotinamide 500mg (vitamin B3 in capsules, 250mg per capsule, taken per os, 2 capsules daily over an observation period of 8 weeks) Group 2: Control group Placebo (cellu

Sponsors

Medizinische Universität Graz
Lead Sponsor

Eligibility

Sex/Gender
All
Age
19 Years to 99 Years

Inclusion criteria

Inclusion criteria: - Written declaration of consent from the study participants to participate in the study after detailed explanation of the nature, significance, risks and scope of the study - Systolic blood pressure >110mmHg - Outpatient cardiac rehabilitation that has been ongoing for > 3 months - Stable drug treatment of the underlying cardiac disease

Exclusion criteria

Exclusion criteria: - Higher grade supraventricular or ventricular arrhythmias - Renal insufficiency with GFR < 45ml/min - Insulin dependent diabetes mellitus - Expected life expectancy < 1 year - Current participation in another clinical trial - Taking vitamin supplements containing niacin/vitamin B3

Design outcomes

Primary

MeasureTime frame
Quantification of Nicotinamide Adenine Dinucleotide (NAD+) concentration in blood The quantification is done using ultra high performance liquid chromatography coupled with mass spectrometry (UHPLC-MS) at baseline and after 8 weeks.

Secondary

MeasureTime frame
NAD metabolomes in plasma and PBMCs Spiro ergometry: maximum exhaustion level in % of target; maximum exhaustion level in watts; heart rate increase during exercise; maximum heart rate during exercise; VO2max; anaerobic threshold Electrocardiography: Standard analyses Autophagy in PBMCs Immune cell profiles Plasma cytokines

Countries

Austria

Contacts

Public ContactDirk von Lewinski

Medizinische Universität Grz

dirk.von-lewinksi@medunigraz.at+43 316 385 0

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Aug 9, 2026