The medicine should be taken twice daily after meal/meals ...

[Barman]

1. The medicine should be taken twice daily after meal for five days.
2. The medicine should be taken twice daily after meals for five days.

Which of the above- mentioned sentences is correct?

 

[emsr2d2]

1. The medicine should be taken twice daily after meal for five days.
2. The medicine should be taken twice daily after meals for five days.

Which of the above-mentioned sentences is correct?

Only sentence #2 is correct.
Don't put a space after a hyphen. It would be more natural to ask "Which of the sentences above is correct?"

 

[Skrej]

Only #2 works in AmE. I was about to post stating #1 was incorrect.

 

[emsr2d2]

*Apologies for any confusion. I was sure I'd written "#2" in my response but I'd mistyped it as "#1". I've corrected it. To be clear, as Skrej said, #1 is incorrect.