Iam 25 Years Carrying, Now In 4 Th Month. My

iam 25 years carrying, now in 4 th month. my doctor prescribed Zincovit syrup 5ml twice a day, vomalist-od tablet and ondem -md tablet once in a day, other than that no others she prescribed, is it ok to take zincovit in this time, am I need to take any other tablets. is her prescription is enough or am I need to take 2 opinion from another gynic.