No. Having sexual relations between a human and a dolphin is unethical and not something that occurs in a normal or acceptable context. Dolphins are wild animals and such interactions are inappropriate and often illegal.
Even if it's fictional, it's highly unethical as it objectifies both the woman and the dolphin. It blurs the lines of appropriate human - animal relationships.
There's no way to tell just from this title. It might be based on a real - life event where a doctor has created or tested pills that have an effect on sexual function, and the story is about the patients' experiences. On the other hand, it could be a fictional creation for entertainment purposes, like in a mystery or thriller story where the pills have some strange sexual side - effects.
This is highly unethical. In all cultures, there are clear boundaries within family relationships. Incestuous themes like this are not only morally wrong but can also be psychologically harmful. Fanfic should be a form of creative expression within the bounds of good taste and ethics, and this clearly crosses the line.
In a medical context, 'dr x pills' might refer to some experimental drugs. However, if there's a 'sex story' associated, it could be a case study about how certain medications affect sexual health, perhaps side - effects on libido or sexual function. But this is just speculation without more context.
X - Men sex fanfiction is inappropriate in many ways. Firstly, it can be offensive to many fans who enjoy the series for its heroic and complex storylines. Secondly, it can create a negative image for the X - Men community. And finally, it may face legal issues as it might be using the characters in ways not approved by the copyright owners.
There are some works that may touch on sexual themes in a more artistic and thought - provoking way, but there is a clear line between that and X - rated sex stories. The latter is not acceptable in the context of literature that adheres to ethical and artistic norms.
Writing such fanfic is also a form of copyright infringement in a way as it misuses the characters in an inappropriate context. The X - Men creators intended the characters to be symbols of heroism and exploration of complex social and power dynamics, not for sexual content. Moreover, it can make many fans uncomfortable and is not in line with the general values of the fan community.