Please assess the completion status of the following clinical trial:

Trial Title: Trial of Probiotics for Constipation in Parkinson's Disease

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Age 50 to 80 years old~* Provision of written informed consent~* Diagnosis of PD made by a Neurologist using UK Brain Bank Criteria~* Fulfils criteria for functional constipation according to the Rome IV Criteria during in the preceding 6 months with frequency of bowel movements less than 3 times per week~Exclusion Criteria:~* Ingestion of probiotics in the preceding 4 weeks~* Use of antibiotics in the preceding 4 weeks~* History of gastrointestinal disorders or surgery~* Known or suspected allergy to probiotics~* Comorbidities that prevent reliable completion of study assessments~* Prior functional neurosurgery for PD or treatment with apomorphine infusion~* Recent initiation of dopaminergic medications in the preceding 3 months

- Gender: ALL
- Minimum Age: 40 Years
- Maximum Age: 85 Years
- Healthy Volunteers: f

Study Arms:
- Treatment (Type: ACTIVE_COMPARATOR): Probiotics capsules
- Placebo (Type: PLACEBO_COMPARATOR): Placebo capsules containing maltodextrin

Based on this trial design, predict the completion outcome and termination type (if applicable).