Table 1. l-Lysine induced inhibition on 5-HT receptors.

	Inhibition, %
Receptor	0.8 mmol/dl	8.0 mmol/dl	80.0 mmol/dl
5-HT1A	1.77	20.7	34.45
5-HT2A	<1.00	8.32	23.19
5-HT2B	<1.00	<1.00	37.1
5-HT2C	<1.00	1.12	<1.00
5-HT3	<1.00	1.39	<1.00
5-HT4	9.17	22.52	41.77

Means of two observations.