Granisetron Side Effects and Warnings

What are the precautions when taking this medicine?

• If you have a heart condition called congenital QT syndrome, talk with healthcare provider.

• If you have a low potassium or magnesium level, talk with healthcare provider.

• Check medicines with healthcare provider. This medicine may not mix well with other medicines.

• Tell healthcare provider if you are pregnant or plan on getting pregnant.

• Tell healthcare provider if you are breast-feeding.

Skin patch:

• You can get sunburned more easily. Avoid sun, sunlamps, and tanning beds. Use sunscreen; wear protective clothing and eyewear.

What are some possible side effects of this medicine?

• Headache.

• Feeling tired or weak.

• Constipation. More liquids, regular exercise, or a fiber-containing diet may help. Talk with healthcare provider about a stool softener or laxative.

• Skin irritation.

Reasons to call healthcare provider immediately

• If you suspect an overdose, call your local poison control center or emergency department immediately.

• Signs of a life-threatening reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; fits; or swelling of face, lips, tongue, or throat.

• Fast heartbeat.

• Significant change in thinking clearly and logically.

• Severe belly pain.

• Severe headache.

• Severe constipation.

• Feeling extremely tired or weak.

• Severe skin irritation.

• Any rash.

• No improvement in condition or feeling worse.