Can i take dramamine and bonine together to treat motion sickness that already started ? are there interactions between the 2?

Only one: Both of these drugs have a similar mechanism of action and you should take only one. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get HPV and Covid vaccines. Wish you good health!

Additive side effect: The two together cause increased side effects of drowsiness, sedation, and lethargy, and would not enhance efficacy. Choose one and use that alone.