I agree with so much that other posters have offered.
I have been taking it since April.
I am 5ft 7 and started at 15st 7lb size 20's were getting tight.
I was so incredibly lucky that a friend started the injections a couple of months before and I was able to use her knowledge to support me.
I was astounded that the needle is very fine and I could barely feel it going in.
I make sure I take it out of the fridge for a couple of hours before injecting - anecdotally it is uncomfortable if it is fridge cold.
On her guidance I stayed on the 2.5 dose for longer and am very pleased I did. I have mostly lost 1-2 lb a week. I am still on 5mg and it is still working well.
For me the most interesting aspect is how much I still enjoy the flavour of food. I have about a quarter of the portion I would previously have had but I just don't want any more.
I have still felt hunger, it is just satisfied more readily.
I have had 2 episodes of horrid side effects (body decided to eject from both ends, what I had put in). This was totally self induced, I ate a whole tub of Pringles out of habit not hunger..... mistake! The second time I ate a packet of 4 Tesco fresh chocolate chip cookies.... another mistake!! but lesson learned... Moderation is required.
After the first stone I felt able to join a local gym and now go 3 times a week.
I am now 12st 7 and have 1.5 st left to go. I would love to be a dress size 12.
So other things I have learned..... Oestrogen is stored in fat cells and if you are taking HRT you might need to adjust your progesterone dose to compensate. I have a very proactive GP who has done a lot of reading about potential issues with womb cancer due to oestrogen release into your system. (during weight loss phase not maintenance)
Also, adding fibre and drinking enough water can help with constipation.
The GP also told me that current research suggests that when you come off the food noise goes from a whisper to a shout but only for a couple of months so if you can get through that you will be unlikely to gain much rebound weight.
If you can I would also talk to your GP first and get some blood levels taken before you start. Mine has been really supportive.
Good luck!