What drugs does a clean rider take?

All this hoopla about drugging got me to thinking. I recall reading somewhere years ago that pro riders, especially in the Grand Tours take and are administered a wide range of products to aid in daily recovery. There are saline drips IVs for re-hydration and replacement of minerals, mega-vitamins, nutrients, et al. Anybody know what is currently being injected and or ingested into pro riders legally?

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Terry

Interesting, I'm afraid I have no idea though. It's a thin blue line isn't it.... today's suppliment, tomorrow's banned substance?