Aromasin side effects?

The symptoms you stated are known side effects of Aromasin. It must have been really bothersome if your mum refused her dose. You did the right thing to contact her doctor.

Hopefully he/she has worked out another regimen for your mum.

These are the known side effects of Aromasin.

Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Aromasin:

Anxiety; back, joint, muscle, or limb pain; constipation; coughing; diarrhea; dizziness; fatigue; flu-like symptoms; hair loss; headache; hot flashes; increased or decreased appetite; increased sweating; joint pain; nausea; stomach pain or upset; tiredness; trouble sleeping; weight gain; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Aromasin:

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Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; confusion; depression; numbness of an arm or leg; numbness or tingling in the skin, hands, or feet; one-sided weakness; severe or sudden bone pain; severe stomach pain; shortness of breath; sudden, severe dizziness, headache, vomiting, or fainting; sudden, unusual weight gain; swelling of the hands, legs, or feet; vision or speech changes.

http://www.drugs.com/sfx/aromasin-side-effects.html