Zinc sulfate as an adjunct to methylphenidate for the treatment of attention deficit hyperactivity disorder in children: A double blind and randomized trial [ISRCTN64132371]

Table 2 Clinical complications and side effects were reported as number per group.

Side Effects	Zinc sulfate	Placebo	P
Anxiety	3	3	Ns
Decreased Appetite	8	7	Ns
Difficulty Falling Sleep	6	6	Ns
Abdominal Pain	8	4	0.31
Nausea	9	3	0.08
Headache	9	9	Ns
Metallic taste	13	0	0.0001

ISSN: 1471-244X