Please assess the completion status of the following clinical trial:

Trial Title: Effects of L-carnitine on Hypothyroidism

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Clinical diagnosis of hypothyroidism with fatigue symptom~* Currently use of the same amount of levothyroxine over at least six months~* Normal serum free T4 level~Exclusion Criteria:~* Current smoker~* Serum hemoglobin level of under 12mg/dL~* Clinical diagnosis of diabetes mellitus or fasting serum glucose level ≥ 126mg/dL or HbA1c level ≥ 6.5%~* History of significant heart failure~* History of large amount of alcohol consumption~* Uncontrolled hypertension (systolic blood pressure ≥ 160 millimeter of mercury (mmHg) or diastolic blood pressure ≥ 100 mmHg~* pregnant, or planning to be pregnant, or breast feeding women~* aspartate aminotransferase (AST) or alanine aminotransferase (ALT) ≥ 2 times of normal limit~* serum Cr level \> 2.0mg/dL

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 70 Years
- Healthy Volunteers: f

Study Arms:
- L-carnitine (Type: ACTIVE_COMPARATOR): L-carnitine 330mg, 3 tablet twice daily
- Placebo (Type: PLACEBO_COMPARATOR): placebo drug, 3 tablet twice daily

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