Centussin DHC Side Effects- Causes and Effects


Category: Antihistamine, Decongestant and Cough Suppressant

Drug Name: Centussin DHC

General Usage: Used as Antihistamine, Decongestant and Cough Suppressant

Brief Info about Centussin DHC in Drug:


Generic name of Centussin DHC is Dihydrocodeine Bitartrate, Brompheniramine Maleate & Phenylephrine Hydrochloride.

Phenylephrine /Brompheniramine /Dihydrocodeine Liquid is a combination of decongestant, antihistamine & cough suppressant. The decongestant acts by shrinking blood vessels & decreasing swelling in our nasal passages. The antihistamine acts by preventing the action of a natural chemical known as histamine that reduces signs of sneezing and watery eyes.

The cough suppressant acts in our brain to help reduce the cough reflex to get relief from dry cough.

It is used to treat-

  • Runny nose
  • Throat or itchy nose
  • Sinus congestion
  • Sneezing
  • Cough due to colds, allergies or upper respiratory tract infections
  • Watery or itchy eyes

Centussin DHC Side Effects Explained Better:

There are different varieties of medicines in the world that are being sold on the black market & on the streets. Obviously, there are large numbers of prescribed drugs that are useful to our health & are used to diagnose our health problems. However, these prescribed drugs can be abused & dangerous to our body. Sometimes side effects are caused by the drug interaction. To avoid these unpleasant effects, you need to let your doctor know about all medicines that are being used by you.

Have a glance at different types of adverse effects that are mentioned below-

Frequent Centussin DHC Side Effects (Commonly Seen)-

When you take this drug, you may or may not feel these unwanted effects. Some of them are as follows-

  • Drowsiness
  • Excitability
  • Constipation
  • Trouble sleeping
  • Headache
  • Dizziness
  • Loss of appetite
  • Dry mouth, throat or nose
  • Weakness
  • Nausea
  • Anxiety or nervousness
  • Upset stomach
  • Vomiting

If these unpleasant effects continue, make a move to your health care provider immediately.

Infrequent Centussin DHC Side Effects (Professional Point of View)-

You should seek medical attention at once as you notice below listed symptoms or some other symptoms that are not mentioned here during the treatment with Centussin DHC-

  • Signs of allergic reactions-
    • Hives
    • Tightness in the chest
    • Rash
    • Itching
    • Difficulty breathing
    • Swelling of the lips, mouth, tongue or face
  • Unable to urinate or difficulty urinating
  • Fainting
  • Rapid, slow, or erratic heartbeat
  • Loss of coordination
  • Unusual bleeding or bruising
  • Chills, fever, or constant sore throat
  • Confusion
  • Headache or lightheadedness
  • Mental or mood changes (such as- depression)
  • Persistent trouble sleeping
  • Ringing in the ears
  • Seizures
  • Blurred vision or vision changes
  • Uncontrolled muscle movements
  • Hallucinations
  • Severe dizziness
  • Severe drowsiness
  • Tremor
  • Shallow breathing
  • Unusual weakness or tiredness

 Centussin DHC Overdose Side Effects (Require Immediate Medical Attention)-

Centussin DHC Overdose symptoms may include-

  • Cold and clammy skin
  • Confusion
  • Blurred vision
  • Hallucinations
  • Shallow breathing
  • Seizures
  • Unusually rapid, slow, or erratic heartbeat
  • Vomiting
  • Coma
  • Severe dizziness
  • Lightheadedness or Headache
  • Severe drowsiness

If you have gulped down more of this drug by mistake or intentionally, you must get emergency medical attention immediately.

Centussin DHC Drug Interaction Side Effects (Due to Reaction with Other drugs)-

A list of medicines is listed below that have the capability of interacting with Centussin DHC, if used together, results in unpleasant effects that are injurious to human body.

  • Anticholinergics ( such as- scopolamine)- serious paralytic ileus (bowel motility problem) may occur
  • Linezolid, Furazolidonefever and hypertension (high blood pressure) may occur
  • Barbiturates (such as- phenobarbital), Muscle relaxants (such as- cyclobenzaprine), Hiv protease inhibitors (such as- ritonavir), Opioid analgesics (such as- hydrocodone), Beta-blockers (such as- propranolol), Phenothiazines (such as- chlorpromazine)- These drugs may increase the risk of Centussin DHC’s side effects
  • Droxidopa or digoxin– risk of heart attack or erratic heartbeat may be increased
  • Bromocriptine- the risk of its adverse effects may be increased by Centussin DHC
  • Rifamycins (such as- Rifampin) or Quinidine– they may reduce Centussin DHC’s effectiveness
  • Guanadrel, Reserpine, Methyldopa, Guanethidine, Mecamylamine- The effectiveness of these drugs may be reduced by Centussin DHC.
  • Naltrexone- it may reduce Centussin DHC’s effectiveness

Well, this is not the complete list of all drugs; there may be other medicines that are not mentioned here. You should inform your doctor if you are having these medicines or other drugs besides Centussin DHC.

Centussin DHC Prolonged Use Side Effects (When Used for Longer Periods)-

Some people who consume Centussin DHC for a long time may develop a need to continue having it. If they abruptly halt taking Centussin DHC, they may notice withdrawal symptoms. These are as follows-

  • Fever
  • Anxiety
  • Tremors or shivering
  • Sneezing or runny nose
  • Vomiting or nausea
  • Diarrhea
  • Abnormal skin sensations and goosebumps
  • Seeing, feeling or hearing things that are not there
  • Pain
  • Fast heartbeat
  • Rigid muscles
  • Trouble sleeping
  • Sweating

Do not close your eyes to these symptoms & make a run to your doctor at once as soon as you notice these symptoms.