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Vitamin K2 Real-World Evidence: Assessing the Efficacy and Safety of Vitamin K2 for Nocturnal Leg Cramps—The ViKnight Study

Vitamin K2 Real-World Evidence: Assessing the Efficacy, Safety and Treatment Modalities of Vitamin K2 for Nocturnal Leg Cramps—The ViKnight Study

Status
Recruiting
Phases
Phase 4
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2500106282
Enrollment
Unknown
Registered
2025-07-21
Start date
2025-08-01
Completion date
Unknown
Last updated
2025-08-18

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

Conditions

Nocturnal Leg Cramps

Interventions

Observation Group:None

Sponsors

The Third People's Hospital of Chengdu
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Signed informed consent form has been obtained; 2. Patients aged >18 years; 3. Male or female patients diagnosed with Nocturnal Leg Cramps (NLCs) according to reference diagnostic criteria; 4. The decision to initiate vitamin K2 treatment was made ??prior to and independent of?? study participation; 5. Patients ??must have received at least one dose?? of vitamin K2 for NLCs (i.e., completed initial administration).

Exclusion criteria

Exclusion criteria: 1. Treatment with vitamin K2 ??deviates from?? standard medical practice and/or the current spec sheet/label; 2. Participation in any other ??ongoing?? clinical trial (including but not limited to NLCs-related studies); ??3. Inability to provide?? baseline clinical data within 14 days ??preceding?? initial vitamin K2 treatment (including diagnostic evidence, risk factors, and episode frequency); ??4. Functionally incapable?? of self-recording and reporting muscle cramps; 5. Active severe psychiatric disorders; 6. Current use of ??warfarin?? at enrollment.

Design outcomes

Primary

MeasureTime frame
Symptom improvement rate;

Secondary

MeasureTime frame
Number and percentage of patients receiving each treatment regimen;Number and percentage of patients with treatment regimen transitions;Number and percentage of lost-to-follow-up cases at Weeks 2, 4, 6, and 8;Correlation between number of treatment sessions and symptom improvement rate;Total number of protocol-scheduled visits;Intervals between treatment sessions;Sleep Disturbance Improvement Rate;

Countries

China

Contacts

Public ContactJing Tan

The Third People's Hospital of Chengdu, Chengdu, Sichuan, China

79468064@qq.com+86 180 7541 0416

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026