Please assess the completion status of the following clinical trial:

Trial Title: Comparison of Two Omeprazole-Containing Products for Relief of Frequent Heartburn (MK-0764A-036)

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

Eligibility Criteria:
Inclusion Criteria:~* Females of reproductive potential must demonstrate a negative urine pregnancy test and agree to use an acceptable method of birth control~* Suffer from frequent heartburn~* Refrain from taking non-study medicine or treatment for heartburn for the duration of the study~* Be free of any clinically significant disease that requires a physician's care~* Read and understand English~Exclusion Criteria:~* Any significant medical condition which is a contraindication to the use of omeprazole or sodium bicarbonate~* Known hypersensitivity to the study drugs or any components~* Experiencing any of the following: trouble or pain with swallowing food, vomiting with blood, bloody or black stools~* Participation in another investigational study within 4 weeks prior to the screening visit.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Omeprazole 20 mg + Sodium Bicarbonate 1100 mg (Type: EXPERIMENTAL): Participants will receive omeprazole 20 mg + sodium bicarbonate 1100 mg once a day for 4 days, and then after a washout period, omeprazole 20 mg once a day for 4 days.
- Omeprazole 20 mg (Type: ACTIVE_COMPARATOR): Participants will receive omeprazole 20 mg once a day for 4 days, and then after a washout period, omeprazole 20 mg + sodium bicarbonate 1100 mg once a day for 4 days.

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