When teaching a patient who will be receiving antihistamines, the nurse will include which instructions? (Select all that apply)

Drink extra fluids if possible.

Antihistamines may cause restlessness and disturbed sleep.

Avoid activities that require alertness until you know how this medication affects you.

Take the medication on an empty stomach to maximize absorption of the drug.

The medication will begin to work within 30 minutes.

Antihistamines are generally safe to take with other over-the-counter medications.