Different people metabolize drugs differently and react differently to them. One that works great for one person might be like drinking water for another. Also know that using benzos for sleep isn't a great idea -- they interfere with REM sleep and are addictive if you take them regularly. If it's just for 3 days and only for 3 days, that won't be a problem, but if you have a long-term problem sleeping this isn't an answer, it's just making you not care. Benzos are best used on an as-needed basis, not regularly, so remember that. As for your side effects, unfortunately, for many people these meds don't work right away, but with benzos, since you don't want to get addicted to them for sleep purposes -- sometimes anxiety is so intractable they are the only thing that works -- it makes it kind of hard to get used to them without becoming very attached to them. Have you tried other means, such as melatonin or herbal relaxants or exercise or meditation or therapy yet? But again, if it's really just for 3 days there are other benzos that might not have these side effects.