請問有誰聽過

<span style="font-size: medium">請問誰聽過左旋肉鹼<br /> <br /> </span> <p><span style="font-size: medium">不知道功效如何?</span></p> <p><span style="font-size: medium">DHC好像有賣....效果有很好?!</span></p>