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Can medicines cause extreme weight gain?
1 doctor weighed in

Dr. Joseph Kuhn
Bariatrics
In brief: Steroids mostly
Steroids (prednisone, decadron, (dexamethasone) etc) can cause rapid increase in weight due to increased hunger. Some antidepressants cause mild increase in weight.
Basic testing by your doctor might also check for deficiencies in thyroid, iron, b-12, as metabolic causes for weight gain.

In brief: Steroids mostly
Steroids (prednisone, decadron, (dexamethasone) etc) can cause rapid increase in weight due to increased hunger. Some antidepressants cause mild increase in weight.
Basic testing by your doctor might also check for deficiencies in thyroid, iron, b-12, as metabolic causes for weight gain.
Dr. Joseph Kuhn
Dr. Joseph Kuhn
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