what is a good alternative for caffeine?

I'd say, multivitamins. It worked on me... and I don't have any trouble sleeping at night anymore.

Fruit and nuts are a great source of energy and are also extremely healthy and nutritional! I normally have a banana, or fresh fruit juice for that extra energy boost. Also, a nice herbal tea with honey also keeps me alert, but doesn't affect my sleep.

If you drink caffeine to stay awake or to be more energized, I suggest that you stop drinking it altogether. You can replace it with a regular intake of Pharmaton, a supplement tablet which provides you with ample energy and can make you stay alert during the day. The best thing is it does not make you into an insomnia sufferer at night. My cousin takes it as a daily regimen and she is healthy and energetic. I understand you are so used to drink coffee while doing work. So now you can still enjoy your drink, but substitute it with hot cocoa, tea, oats, barley... the list is endless. I believe you can find a lot of assorted drinks from the hypermarket at your place. There are so many other alternatives to caffeine in the market. I hope this helps you. Have a productive day ahead!

I can't say for sure, but I have heard green tea is a good alternative. When you take it as a diet supplement it makes your metabolism go faster, which would mean your body was being stimulated at a higher level. When drank as regular green tea, I imagine it has the same affect on your mind and body.

I found Rooibos (Red Bush) tea and Fruit Tea are good alternatives to black tea and coffee.

well,my intake of caffeine is mainly to stay up. otherwise, i do take green tea and juices in place of caffeine. i think that instead of taking any energy supplements, i will stick with black tea or black sodas.