Hey, welcome to pherotalk 
rocoo123 !
So many questions, didnt you know youre only allowed one question as a new user!? haha im just kidding 
Many of the other phero products out there are either scams or have little mones in them, much of them being cheap molecules from china with inconsistent dosages and results. The mones here are legit and contain dosed sprays and produce the effects they claim and that is why they stand behind their products till the end !
If you are looking for a work pheromone to produce respect and alpha then thats A314, being a doctor i would think you already receive those hits from the nurses and individuals around you, unless you are looking for more respect from the other doctors and your elders,supervisors. It is $109 and is generally for those who have a little more experience with mones since it is truly their flagship product. It is oil based and lasts the whole day up to around 8-9 hours some users report. It lasts many many months depending on your amount of use and sweet spot, usually 1-2 drops.
If youre looking for the sexual hits then i would suggest ammo, since it is a general attractant and has social buffers built into it. ITs scented at cologne strength and suitable for just about every environment. It is alcohol based and lasts around 4-6 hours.
heres a link about finding your sweet spot
How to find your sweet spot… - PheroTalk Pheromone Research Forum
The smaller to go bottles have 40 sprays in them. and the larger 30mL have around 200. I recommend that most users get the to gos to start out since they are cheap and you can experiement, and find your sweet spot and find the products that you like best and see the effects they produce, then you can purchase the larger versions of them after which im sure you will do !
If you are looking for trust,then definitely the best mone here for that is IH, it deepens bonds and trust, and IO is known as the ice breaker of mones where it relaxes you and those around you, alleviates anxiety when talking to new people and conversation will flow easily.
Hope this gives you some insight and direction to get started !