thankyou for the information!
The xanax is an antianxiety drug and is used to treat anxiety state, insomnia, panic disorders,etc.
Yes the xanax cause weight gain in some individual who take it regularly.The incidence of weight loss has also been reported in some individual after its continuous use.
The xanax do not cause any water retention as such directly but may cause cause fluid loss due to the incidence of diarhhea, vomitting associated with it as the side effect.
The xanax also causes constipation and abdomen distress as the side effect.
These side effects are related to those individuals who do not change their diet and exercise schedule before starting the xanax treatment.
The dose of 5 mg per day which you are taking is enough to cause these side effects mentioned above.
Please feel free to ask me in case you have any doubt or need any more information.