Dexamethasone (Dexona) With Chemotherapy: — Why You Are Given It

No. Dexamethasone is a corticosteroid — a steroid medicine — given to protect you during chemotherapy, not to treat the cancer. It prevents the severe nausea and allergic reactions that some chemotherapy medicines can cause. Your oncologist can explain the specific role it plays in your regimen.

Steroids directly stimulate appetite, and dexamethasone does this consistently. The hunger is strongest in the day or two around each treatment and eases between cycles. It is not a sign that something is wrong. If the hunger is causing real distress or making it hard to follow dietary guidance your team has given you, let them know.

The hunger is real, but eating without restraint can raise blood sugar further and make weight harder to manage during treatment. For most people, regular balanced meals are safer than responding to every urge to eat. If you have been given guidance about blood sugar or diet, ask your oncology team or a dietitian how to handle the steroid-driven hunger within those limits.

Dexamethasone raises alertness and can feel activating — especially if it is given in the afternoon or evening. The disruption is usually worst on the night of or after treatment and eases as the medicine clears. If broken sleep is significantly affecting you, tell your oncology team. Adjusting when within the regimen the medicine is given is sometimes possible.

The rise is predictable and manageable when your team knows about your diabetes before treatment starts. Tell both your oncologist and your diabetes doctor or GP before chemotherapy begins so your diabetes medicines can be reviewed. Do not adjust your diabetes medicines on your own in response to readings during treatment — contact your team and let them guide any changes.

The hunger, broken sleep and mood changes are usually strongest in the day or two around each treatment session and settle between cycles as the steroid clears. If any effect is lasting significantly longer, or feels more severe than your team described, mention it at your next appointment — or call sooner if it is worrying you.

No — do not stop, skip or reduce dexamethasone without speaking to your oncology team first. It is given for a specific reason in your regimen, and feeling fine may partly be because it is working. Stopping steroid medicines abruptly can also cause withdrawal effects. If side effects concern you, tell your team — do not stop the medicine without guidance.

The pattern depends on your specific regimen. Some people take it only on the days around each chemotherapy session; others take it for a period after each cycle to manage delayed nausea. Your chemotherapy schedule will say when it is due. If you are unsure whether you have taken it correctly, contact your team rather than doubling up or skipping.