Dehydration recovery time depends on how dehydrated you are.
If you are severely dehydrated, it’s likely that you will be hospitalized and put on intravenous hydration for up to 24 hours to recover from dehydration, or until you’re able to drink oral rehydration fluids yourself. When you’re severely dehydrated, you need to put back a LOT of fluid, and it needs to be balanced with the nutrients that your body usually contains.
If you were to suddenly put a lot of water back into your body after being severely dehydrated, it might cause your body to go into a form of shock, so you need to pace yourself.
At less severe dehydration levels that are still serious, it’s possible that you’ll only be drinking oral rehydration fluids. CDC guidelines for those suffering from dehydration through Cholera recommend drinking up to 1 liter of ORS fluid per hour for an adult, and children 20ml / kg of body weight.  We also wrote up an article on the fastest way to rehydrate, here.
Is your routine dehydrating?
How long does dehydration last?
If you don’t treat dehydration by drinking water and in some cases taking on electrolytes in the right quantities, your dehydration will last indefinitely. If it progresses for long enough, you can die from dehydration. Most of us know this - you can go weeks without food, but only days without water. A study from 1998 reported in the New York Times showed that 75% of Americans were chronically dehydrated. This meant that they were not meeting their daily requirement for water intake, and were staying in a dehydrated state for long periods of time! In that scenario, recovering from dehydration requires a complete overhaul to your routine, to ensure you're making it a daily habit to consume enough water.
So what is Hydrant?
We made Hydrant to be an effective way to recover from dehydration quickly, based on World Health Organization guidelines for ORS. Drinking enough water each day can be hard for any number of reasons and using Hydrant makes hydration easier. It's easy to fit into your routine, and many of our customers start their day with a Hydrant to make sure they are at their baseline hydration level from the get-go. Because it’s in a convenient powder pack, wherever you need quick recovery from dehydration, you can mix it with water and get hydrated fast. Use code RECOVER15 at checkout to get 15% off your first order.
At Hydrant, we like to go one step further with our references and add some information that gives context to the link. We know that not everyone has the time to comb through an academic article, so give quick summaries next to each link for you!
 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC419333/ (This is a meta-analysis of randomized control studies comparing oral rehydration against intravenous rehydration. Randomized control trials are very high quality studies, and meta-analyses look at many of them to draw conclusions.)
 https://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0082773/ (This link is a long form article titled: "Principles and protocols for intravenous fluid therapy". It's an in depth clinical guide for medical professionals.)
 https://www.cdc.gov/cholera/treatment/rehydration-therapy.html (CDC page on Oral Rehydration)