Please assess the completion status of the following clinical trial:

Trial Title: Viagra in the Treatment of Primary Dysmenorrhea

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE1/PHASE2
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Primary dysmenorrhea at current visit, with a visual analogue scale (VAS) score of \>35; pain defined as moderate or severe on a categorical of none, mild, moderate, severe.~Exclusion Criteria:~* Secondary dysmenorrhea~* Any current medication~* Serious medical condition

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: 35 Years
- Healthy Volunteers: t

Study Arms:
- Sildenafil Citrate (Type: EXPERIMENTAL): A single vaginal dose of Viagra 100 mg.
- Placebo (Type: PLACEBO_COMPARATOR): A single vaginal dose of placebo.

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