5. Adverse events reported.

Adverse event	Bill 1997		Guerreiro 1997		Total
	OXC	PHT	OXC	PHT	OXC	PHT	Total
Somnolence	41	41	24	28	65	69	134
Headache	20	27	13	14	33	41	74
Dizziness	18	22	9	21	27	43	70
Gum Hyperplasia	2	18	2	24	4	42	46
Nausea	13	16	5	7	18	23	41
Rash	12	16	4	5	16	21	37
Nervousness	2	9	2	11	4	20	24
Apathy	0	0	11	10	11	10	21
Tremor	4	10	0	0	4	10	14
Ataxia	0	0	0	13	0	13	13
Diplopia	1	11	0	0	1	11	12
Acne	9	3	0	0	9	3	12
Nystagmus	3	8	0	0	3	8	11
Abnormal thinking	0	0	5	6	5	6	11
Abdominal pain	0	0	5	4	5	4	9
Hypertricosis	0	0	0	8	0	8	8
Vomiting	0	0	0	5	0	5	5