Translate this text from Czech to English.
Neřiďte automobil, neobsluhujte stroje ani nedělejte nic jiného, co vyžaduje duševní bdělost, dokud nebudete vědět, jak na Vás tento lék působí.
Translation: You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this drug affects you. Do not stand or sit up quickly, especially if you are an older patient.