What should I avoid while taking chlorpheniramine, carbetapentane, ephedrine, and phenylephrine?
Use caution when driving, operating machinery, or performing other hazardous activities.
Chlorpheniramine, carbetapentane, ephedrine, and phenylephrine may cause dizziness or drowsiness. If
you experience dizziness or drowsiness, avoid these activities.
Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while taking
chlorpheniramine, carbetapentane, ephedrine, and phenylephrine.
Chlorpheniramine, carbetapentane, ephedrine, and phenylephrine may increase the effects of
other drugs that cause drowsiness, including antidepressants, alcohol, other antihistamines, pain
relievers, anxiety medicines, seizure medicines, and muscle relaxants. Dangerous sedation, dizziness, or
drowsiness may occur if chlorpheniramine, carbetapentane, ephedrine, and phenylephrine is taken with
any of these medications.
What other drugs will affect chlorpheniramine, carbetapentane, ephedrine, and phenylephrine?
Do not take chlorpheniramine, carbetapentane, ephedrine, and phenylephrine if you have
taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), phenelzine (Nardil), or
tranylcypromine (Parnate) in the last 14 days. A dangerous drug interaction could occur, leading to
serious side effects.
Do not take other over-the-counter cough, cold, allergy, diet, pain, or sleep medications while
taking chlorpheniramine, carbetapentane, ephedrine, and phenylephrine without first talking to your
pharmacist or doctor. Other medications may also contain chlorpheniramine, carbetapentane,
ephedrine, phenylephrine, or other similar drugs, and you may accidentally take too much of these
medicines.
Chlorpheniramine, carbetapentane, ephedrine, and phenylephrine may increase the effects of
other drugs that cause drowsiness, including antidepressants, alcohol, other antihistamines, pain
relievers, anxiety medicines, seizure medicines, and muscle relaxants. Dangerous sedation, dizziness, or
drowsiness may occur if chlorpheniramine, carbetapentane, ephedrine, and phenylephrine is taken with
any of these medications.
Drugs other than those listed here may also interact with chlorpheniramine, carbetapentane,
ephedrine, and phenylephrine. Talk to your doctor and pharmacist before taking any prescription or
over-the-counter medicines.