Given by injection, dexamethasone will begin working quickly. Taken by mouth as a tablet, the effects may take from one hour up to several hours.

How does Decadron make you feel?

SIDE EFFECTS: Stomach upset, headache, dizziness, menstrual changes, trouble sleeping, increased appetite, or weight gain may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

How much Decadron do you use for Covid?

The RECOVERY trial provides evidence that treatment with dexamethasone at a dose of 6 mg once daily for up to 10 days reduces 28-day mortality in patients with Covid-19 who are receiving respiratory support.