Liquid Medications, such as in an EpiPen, lose their effectiveness much faster than powder forms. The date on it is a guarantee that it is 90% potency until that date. After that date it will deteriorate. Keep an EpiPen only till its expired.
She said she was 18...
9 months
between 30min to 2hours
Depends on the brand
It takes 12 weeks (3 months) for the shot to wear off.
1 day (28 hours)
The effects of Vicodin last about 4 to 6 hours.
You inhale to much.
Laughing gas(Nitrous Oxide), wears off almost immediately after it is stopped.
it depends if the inhaler is metal
Invisiline?
3 days, but from a lot of personal experience, it feels like 8-12 hours.