I'm trying to figure out if sweating a lot throughout the day will decrease the length Vyvanse is in my system. I am a commercial roofer and I'm constantly outside in the sun and sweat a ton every day. Thanks!
If it affects the length it stays in your system, it's negligible. It's supposed to stay in your system for twelve hours, and this has proven to be pretty accurate for me even though I sweat a lot due to anxiety and hyperhidrosis.
One thing I will warn you about though is vasodilation: if you're working outside and are shifting from crouching, sitting, etc. to standing, you will likely get dizzy. The expansion of blood vessels in your head from the heat causes your blood pressure to slow, and so when you stand up quickly (or as you normally would) you might not be able to see and can get really dizzy. You can even faint in some circumstances.
This happened to me before I started taking vyvanse, but I noticed it's a lot worse while on it and it doesn't take long in the heat before I feel dizzy. I once attempted to sun tan but couldn't handle the heat for very long at all, so I stood up normally to go back inside but I couldn't see anything and was extremely dizzy. I went down forward onto the stones quite hard. It could have been bad if I'd fallen near the table or pool.
Anyway, Vyvanse will still help you a lot if you need it and will definitely be in your system long enough for you to have a productive day, but just be more cautious in the heat and drink a ton of water! (Please don't faint while on a roof!!! )
- Vyvanse Information for Consumers
- Vyvanse Information for Healthcare Professionals (includes dosage details)
- Side Effects of Vyvanse (detailed)
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