why are metronidazole antibiotics so terrible?

Dr. told me I had BV, and prescribed me metronidazole antibiotics 500mg twice daily for 7 days. I am struggling to get this antibiotic down. The taste is HORRIBLE, and I’m only on day 1. I keep gagging them up, and they turn into literal mush seconds after they hit water.

Does anyone have any tips for this antibiotic? How to mask the taste? I’m struggling!!