Dayquil Severe Cold & Flu

Dayquil Severe Cold & Flu is a pain reliever and fever reducer.

Dextromethorphan (Dayquil Severe Cold & Flu) is a cough suppressant. It affects the signals in the brain that trigger cough reflex.

Guaifenesin (Dayquil Severe Cold & Flu) is an expectorant. It helps loosen congestion in your chest and throat, making it easier to cough out through your mouth.

Phenylephrine (Dayquil Severe Cold & Flu) is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).

Dayquil Severe Cold & Flu, Dextromethorphan (Dayquil Severe Cold & Flu), Guaifenesin (Dayquil Severe Cold & Flu), and Phenylephrine (Dayquil Severe Cold & Flu) is a combination medicine used to treat headache, fever, body aches, cough, chest congestion, stuffy nose, and sinus congestion caused by allergies, the common cold, or the flu.

This medicine will not treat a cough that is caused by smoking, asthma, or emphysema.

Dayquil Severe Cold & Flu, Dextromethorphan (Dayquil Severe Cold & Flu), Guaifenesin (Dayquil Severe Cold & Flu), and Phenylephrine (Dayquil Severe Cold & Flu) may also be used for purposes not listed in this medication guide.

• Dayquil Severe Cold & Flu may cause drowsiness or dizziness. These effects may be worse if you take it with alcohol or certain medicines. Use Dayquil Severe Cold & Flu with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
• Do not take appetite suppressants while you use Dayquil Severe Cold & Flu unless your doctor tells you to.
• Dayquil Severe Cold & Flu contains Dayquil Severe Cold & Flu, Dextromethorphan (Dayquil Severe Cold & Flu), Guaifenesin (Dayquil Severe Cold & Flu), and Phenylephrine (Dayquil Severe Cold & Flu). Before you start any new medicine, check the label to see if it has any of these medicines in it too. If it does or if you are not sure, check with your doctor or pharmacist.
• Do NOT take more than the recommended dose or use for longer than prescribed without checking with your doctor.
• If your symptoms do not get better within 7 days or if they get worse, check with your doctor.
• Dayquil Severe Cold & Flu may harm your liver. Your risk may be greater if you drink alcohol while you are using Dayquil Severe Cold & Flu. Talk to your doctor before you take Dayquil Severe Cold & Flu or other fever reducers if you drink more than 3 drinks with alcohol per day.
• A very bad skin reaction (Stevens-Johnson syndrome/toxic epidermal necrolysis) may happen. It can cause very bad health problems that may not go away and sometimes death. Get medical help right away if you have signs like red, swollen, blistered, or peeling skin (with or without fever); red or irritated eyes; or sores in your mouth, throat, nose, or eyes.
• Dayquil Severe Cold & Flu may interfere with certain lab tests. Be sure your doctor and lab personnel know you are taking Dayquil Severe Cold & Flu.
• Tell your doctor or dentist that you take Dayquil Severe Cold & Flu before you receive any medical or dental care, emergency care, or surgery.
• Use Dayquil Severe Cold & Flu with caution in the ELDERLY; they may be more sensitive to its effects.
• Caution is advised when using Dayquil Severe Cold & Flu in CHILDREN; they may be more sensitive to its effects.
• Different brands of Dayquil Severe Cold & Flu may have different dosing instructions for CHILDREN. Follow the dosing instructions on the package labeling. If your doctor has given you instructions, follow those. If you are unsure of the dose to give a child, check with your doctor or pharmacist.
• PREGNANCY and BREAST-FEEDING: It is not known if Dayquil Severe Cold & Flu can cause harm to the fetus. If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Dayquil Severe Cold & Flu while you are pregnant. It is not known if Dayquil Severe Cold & Flu is found in breast milk. Do not breast-feed while taking Dayquil Severe Cold & Flu.

Usual Adult Dose for Cold Symptoms:

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg oral tablet, or

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-100 mg-5 mg oral tablet:

2 tablets orally every 4 hours not to exceed 12 tablets daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 500 mg-20 mg-400 mg-10 mg oral tablet:

1 tablet orally every 4 to 6 hours not to exceed 6 tablets daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg/15 mL oral liquid:

30 mL orally every 4 hours not to exceed 180 mL daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 650 mg-20 mg-400 mg-10 mg/20 mL oral liquid:

20 mL orally every 4 hours not to exceed 6 doses (120 mL) daily

Usual Adult Dose for Influenza:

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg oral tablet, or

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-100 mg-5 mg oral tablet:

2 tablets orally every 4 hours not to exceed 12 tablets daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 500 mg-20 mg-400 mg-10 mg oral tablet:

1 tablet orally every 4 to 6 hours not to exceed 6 tablets daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg/15 mL oral liquid:

30 mL orally every 4 hours not to exceed 180 mL daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 650 mg-20 mg-400 mg-10 mg/20 mL oral liquid:

20 mL orally every 4 hours not to exceed 6 doses (120 mL) daily

Usual Pediatric Dose for Cold Symptoms:

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg oral tablet, or

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-100 mg-5 mg oral tablet:

12 years or older: 2 tablets orally every 4 hours not to exceed 12 tablets daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 500 mg-20 mg-400 mg-10 mg oral tablet:

6 to 11 years: 1/2 tablet orally every 4 to 6 hours not to exceed 3 tablets daily.

12 years or older: 1 tablet orally every 4 to 6 hours not to exceed 6 tablets daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg/10 mL oral liquid:

6 to 11 years: 10 mL orally every 4 hours not to exceed 50 mL daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg/15 mL oral liquid:

12 years or older: 30 mL orally every 4 hours not to exceed 180 mL daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 650 mg-20 mg-400 mg-10 mg/20 mL oral liquid:

12 years or older: 20 mL orally every 4 hours not to exceed 6 doses (120 mL) daily

Usual Pediatric Dose for Influenza:

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg oral tablet, or

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-100 mg-5 mg oral tablet:

12 years or older: 2 tablets orally every 4 hours not to exceed 12 tablets daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 500 mg-20 mg-400 mg-10 mg oral tablet:

6 to 11 years: 1/2 tablet orally every 4 to 6 hours not to exceed 3 tablets daily.

12 years or older: 1 tablet orally every 4 to 6 hours not to exceed 6 tablets daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg/10 mL oral liquid:

6 to 11 years: 10 mL orally every 4 hours not to exceed 50 mL daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 325 mg-10 mg-200 mg-5 mg/15 mL oral liquid:

12 years or older: 30 mL orally every 4 hours not to exceed 180 mL daily.

Dayquil Severe Cold & Flu/Dextromethorphan (Dayquil Severe Cold & Flu)/Guaifenesin (Dayquil Severe Cold & Flu)/PE 650 mg-20 mg-400 mg-10 mg/20 mL oral liquid:

12 years or older: 20 mL orally every 4 hours not to exceed 6 doses (120 mL) daily

Use Dayquil Severe Cold & Flu as directed by your doctor. Check the label on the medicine for exact dosing instructions.

• Take Dayquil Severe Cold & Flu by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
• This product contains 2 different tablets, one for the morning and one for the evening. Be sure you understand how to take Dayquil Severe Cold & Flu. Check with your doctor or pharmacist if you are not sure which tablet to take in the morning and which to take in the evening.
• If you miss a dose of Dayquil Severe Cold & Flu, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Ask your health care provider any questions you may have about how to use Dayquil Severe Cold & Flu.

See also:
What are the possible side effects of Dayquil Severe Cold & Flu?

Applies to Dayquil Severe Cold & Flu / Dextromethorphan (Dayquil Severe Cold & Flu) / Guaifenesin (Dayquil Severe Cold & Flu) / Phenylephrine (Dayquil Severe Cold & Flu): tablets

Other dosage forms:

• liquid

Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Constipation; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; nervousness; trouble sleeping; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur while taking Dayquil Severe Cold & Flu / Dextromethorphan (Dayquil Severe Cold & Flu) / Guaifenesin (Dayquil Severe Cold & Flu) / Phenylephrine (Dayquil Severe Cold & Flu):

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; fast or irregular heartbeat; fever, chills, or persistent sore throat; hallucinations; redness; seizures; severe dizziness, drowsiness, lightheadedness, or headache; severe or persistent nervousness or trouble sleeping; shortness of breath; symptoms of liver problems (eg, dark urine, loss of appetite, pale stools, stomach pain, yellowing of the skin or eyes); tremor; trouble urinating or inability to urinate; vision changes.