Hydrocodone is sold as Vicodin and other names.
For Vicodin, the common side effects may include (quoting the web) dizziness, light-headedness, nausea, sedation, vomiting, and constipation.
LESS COMMON SIDE EFFECTS: allergic reactions, blood disorders, mood changes, mental cloudiness, anxiety, lethargy, urine retention, ureteral spasm, irregular breathing, respiratory depression, and skin rash.
I only took Vicodin a few times as prescribed and I always stopped taking it before the prescription ran out. That was because I had no more pain and I always felt dizzy after taking it. It was as if my body had just migrated to somewhere other than where it should be. ( I think that that would be mental cloudiness). All I ever wanted to do was sleep.
Might want to check with the doctor.