Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex. Diphenhydramine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.
Can I take antihistamine with dextromethorphan?
Using dextromethorphan together with diphenhydrAMINE may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment, and motor coordination.
What drug class is dextromethorphan?
Dextromethorphan is in a class of medications called antitussives. It works by decreasing activity in the part of the brain that causes coughing.
Does cough syrup have antihistamines?
It affects a certain part of the brain (cough center) to help you stop coughing. This product also contains an antihistamine (such as triprolidine, chlorpheniramine, doxylamine) that works by blocking the effects of a certain natural substance (histamine), which causes allergy symptoms. It also has a drying effect.
Is Robitussin DM an antihistamine?
What is Robitussin Cough & Allergy? Chlorpheniramine is an antihistamine. Dextromethorphan is a cough suppressant. Phenylephrine is a decongestant.
Can you be allergic to dextromethorphan?
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
What are the side effects of taking dextromethorphan?
- Blurred vision.
- difficulty in urination.
- drowsiness or dizziness.
- nausea or vomiting (severe)
- shakiness and unsteady walk.
- slowed breathing.
- unusual excitement, nervousness, restlessness, or irritability (severe)
What can you not take with dextromethorphan?
View interaction reports for dextromethorphan / guaifenesin and the medicines listed below.
- Advair Diskus (fluticasone / salmeterol)
- Advil (ibuprofen)
- Aspirin Low Strength (aspirin)
- Benadryl (diphenhydramine)
- Claritin (loratadine)
- Fish Oil (omega-3 polyunsaturated fatty acids)
- Flonase (fluticasone nasal)
Why does dextromethorphan make me feel weird?
When consumed at inappropriately high doses (over 1500 mg/day), DXM can induce a state of psychosis characterized by Phencyclidine (PCP)-like psychological symptoms, including delusions, hallucinations, and paranoia.
How does dextromethorphan stop coughing?
Dextromethorphan works on the part of your brain responsible for the cough reflex, disrupting the communication between your brain and the nerves which provoke the coughing. It temporarily blocks the “lock” so that the “key” no longer fits.
What is best medicine for allergic cough?
Medications used to treat chronic cough may include: Antihistamines, corticosteroids and decongestants. These drugs are standard treatment for allergies and postnasal drip.
Which antihistamine is best for cough?
For your everyday cough from a common cold, a good choice is cough medication that contains an older antihistamine and a decongestant. Older antihistamines include brompheniramine, diphenhydramine and chlorpheniramine.
How can I stop coughing from post nasal drip at night?
How to stop coughing at night
- Incline the head of your bed. …
- Use a humidifier. …
- Try honey. …
- Tackle your GERD. …
- Use air filters and allergy-proof your bedroom. …
- Prevent cockroaches. …
- Seek treatment for a sinus infection. …
- Rest and take decongestants for a cold.
What can you not take with Robitussin?
Avoid taking isocarboxazid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, or tranylcypromine during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before treatment with this medication.
Is Robitussin good for allergies?
It can help relieve cough, runny nose, stuffy nose, sneezing, and itchy or watery eyes. This medicine is used to treat allergy and cold symptoms.
Which Robitussin is best for cough?
Robitussin Dm (Guaifenesin / Dextromethorphan) is a combination medicine that relieves multiple cold symptoms. It’s good to use if you have chest congestion and a cough.