Hiya, I am not a professional in any way so I can only offer peer support. Citalopram usually takes up to 6 weeks to work at its maximum effect. It depends on what the issue is, what to take while you are waiting. Such as if it is for anxiety, they can give you a benzodiazepine such as xanax or valium for short term use until it kicks in( be aware though, they are addictive). If it is for depression, they can refer you to therapy, definitely ask at least if there's anything that can perk you up until the citalopram takes effect. Good luck.