Yes, doing book reviews is generally fair use under the copyright law. Nobody needs to get permission to publish a book review.

That would make a successful suit for defamation significantly less likely. Will you be presenting the manuscript to an established publisher,...

Most states criminalize such postings. Google the subject of revenge porn. i suggest you consult an attorney tp advise how to deal with the...

Seems like the risk of introducing some impurity into the formulation would distinguish your product from the original trademarked composition. ...

Yes, it would be illegal unless you remove any trademarks on it. Otherwise it would amount to "trademark counterfeiting, " even if your...

I've recategorized this question to increase the likelihood that your question will be answered by an attorney with pertinent expertise

Sounds like it. But that's based on the sketchy info in your question, so don't think you can rely on it.

I've recategorized this question to increase the likelihood that your question will be answered by an attorney with pertinent expertise.

Will the business provide services directly to patients or to medical providers? Will it seek revenue from its customers and/or insurers and/or...

I've recategorized this question to increase the likelihood that your question will be answered by an attorney with pertinent expertise.