Hydrocodone side effects are common to those of opioids:

• Anxiety
• Bloating and gas
• Blurred vision
• Constipation
• Diarrhea
• Dizziness, drowsiness
• Dry mouth
• Feeling of elation
• Headache
• Indigestion, upset stomach
• Loss of appetite
• Mood changes
• Nausea, vomiting
• Ringing in the ears
• Weakness
  

Allergic reactions may provoke Hydrocodone side effects that require urgent medical attention:

1. Breathing difficulties, such as airway constriction, obstruction and wheezing
2. Hives, itching, or allergic rash
3. Swelling of the face, lips, mouth, or tongue

Serious Hydrocodone side effects that persist require emergency help:

• Confusion
• Dark urine
• Clay-colored stools
• Fainting
• Feeling light-headed
• Loss of appetite
• Nausea
• Seizure, convulsions
• Shallow breathing
• Slow heartbeat
• Stomach pain
• Unusual thoughts or behavior
• Yellowing of the skin or eyes
  

Other danger signs of overuse with Hydrocodone or with other opiate medications require you to seek emergency care:

• Chest pain
• Coma, unconsciousness
• Fever
• Irregular, slow heartbeat
• Lack of responsiveness
• Muscle stiffness or tremor
• Pinpointed pupils
• Seizures
• Severe sleepiness
• Tightness in chest
• Vomiting
  

Adverse symptoms or convulsions may increase in patients with a history of:

• Addison's disease, adrenal gland, and thyroid disorders
• Alcohol or drug addiction
• Asthma and respiratory disorders
• Brain tumor, head trauma or pressure
• Constricted airways, chronic obstructive pulmonary disease (COPD)
• Enlarged prostate
• Epilepsy or seizures
• Irregular breathing during sleep
• Liver or kidney disease
• Low blood pressure
• Mental illness, suicidal thoughts
• Other breathing disorders
• Pancreas disorder
• Stomach, intestinal disorders
• Under-active thyroid
• Urination difficulties
  

Hydrocodone can impair thinking and reactions that require you to operate machinery or to drive vehicles. Follow your doctor’s advice concerning these activities.

Patients with an alcoholic history and cirrhosis of the liver may be advised by their doctors NOT to take Hydrocodone combined with acetaminophen.

Hydrocodone may initiate dependence or respiratory disorders, organ damage and possible birth defects in unborn and newborn children when taken by mothers during pregnancy or when breast-feeding.

The following is an incomplete list. Ask your physician about all other medications, minerals, vitamins, or alcohol used, which may  impact your health (contraindicated) when combined with Hydrocodone treatment:

Antidepressants, such as:

• amitriptyline (Elavil, Etrafon), clomipramine (Anafranil), imipramine (Janimine, Tofranil), and others

MAO inhibitors, such as

• isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam), or tranylcypromine (Parnate)
• atropine (Donnatal, and others)
• benztropine (Cogentin)
• dimenhydrinate (Dramamine)
• glycopyrrolate (Robinul)
• mepenzolate (Cantil)
• methscopolamine (Pamine)
• scopolamine (Transderm-Scop)

Bladder or urinary medications, such as:

• darifenacin (Enablex)
• flavoxate (Urispas)
• oxybutynin (Ditropan, Oxytrol)
• tolterodine (Detrol), or solifenacin (Vesicare)

Bronchodilators, such as:

• ipratropium (Atrovent)
• tiotropium (Spiriva

Irritable bowel medications, such as

• dicyclomine (Bentyl)
• hyoscyamine (Anaspaz, Cystospaz, Levsin, and others)
• propantheline (Pro-Banthine).
  

Benefits usually outweigh the risk of Hydrocodone side effects. Contact your doctor immediately if any reactions occur  or worsen. Always seek emergency medical help for an allergic reaction.