Very supportive.
This is the current sumary of product characteristics for Ritalin as approved bt the British MCA
I have only included the side effects section
4.8 Undesirable effects
Frequency estimate: very common 10%; common 1% to < 10%; uncommon 0.1% to < 1%; rare 0.01% to < 0.1%; very rare < 0.01%.
Nervousness and insomnia are very common adverse reactions occurring at the beginning of treatment, but can usually be controlled by reducing the dosage and/or omitting the afternoon or evening dose.
Decreased appetite is also common but usually transient.
Central and peripheral nervous system:
Common: Headache, drowsiness, dizziness, dyskinesia,
Rare: Difficulties in visual accommodation, and blurred vision.
Very rare: Hyperactivity, convulsions, muscle cramps, choreo-athetoid movements, tics or exacerbation of existing tics, and Tourette's syndrome, toxic psychosis (sometimes with visual and tactile hallucinations), transient depressed mood, cerebral arteritis and/or occlusion.
So she is taking a load of cobblers
Very rare reports of poorly documented neuroleptic malignant syndrome (NMS) have been received. In most of these reports patients were also receiving other medications. It is uncertain what role Ritalin played in these cases.
Gastro-intestinal tract:
Common: Abdominal pain, nausea and vomiting. These usually occur at the beginning of treatment and may be alleviated by concomitant food intake. Dry mouth.
Very rare: Abnormal liver function, ranging from transaminase elevation to hepatic coma.
Cardiovascular system:
Common: Tachycardia, palpitations, arrhythmias, changes in blood pressure and heart rate (usually an increase).
Rare: Angina pectoris.
Skin and appendages:
Common: Rash, pruritus, urticaria, fever, arthralgia, scalp hair loss.
Very rare: Thrombocytopenic purpura, exfoliative dermatitis, and erythema multiforme.
Blood:
Very rare: Leucopenia, thrombocytopenia, anaemia.
Miscellaneous:
Rare: Moderately reduced weight gain and slight growth retardation during prolonged use in children.