What Is Ninjacof XG? Uses, Dosage, and What You Need to Know in 2026

Ninjacof XG is a brand-name prescription oral liquid that combines two active medications: codeine phosphate and guaifenesin. It's prescribed to adults who need to suppress a cough and loosen mucus — typically from a cold, allergies, or minor respiratory irritation. Here's everything you need to know about this medication.

What Is Ninjacof XG?

Ninjacof XG is manufactured by Centurion Labs, LLC, based in Birmingham, Alabama. It is an oral liquid solution with a cotton candy flavor, dispensed in a 16 fl oz (473 mL) bottle. Each 5 mL teaspoon contains:

• Codeine phosphate 8 mg — an opioid antitussive (cough suppressant)
• Guaifenesin 200 mg — an expectorant that thins and loosens mucus

The combination of these two ingredients makes Ninjacof XG effective for both suppressing the urge to cough and making mucus easier to clear from the airways. It is classified as a Schedule V controlled substance due to its codeine content.

What Is Ninjacof XG Used For?

Ninjacof XG is FDA-approved to temporarily relieve:

• Cough due to minor throat or bronchial irritation (from a cold or inhaled irritants)
• Chest congestion (mucus) by loosening and thinning bronchial secretions

It is intended for short-term use and is

not intended for treating chronic coughs (such as those caused by asthma, COPD, or emphysema) or coughs associated with excessive mucus production, unless directed by a physician.

Who Should NOT Take Ninjacof XG?

Ninjacof XG is not appropriate for everyone. Do not use it if you:

• Are under 18 years old — opioid cough suppressants are not approved for pediatric use
• Have asthma, COPD, sleep apnea, or other serious breathing problems
• Have a known allergy to codeine or guaifenesin
• Are taking monoamine oxidase inhibitors (MAOIs) or have taken them within the past 2 weeks
• Are pregnant or breastfeeding (discuss risks with your doctor)

How to Take Ninjacof XG: Dosing Instructions

Always follow your prescriber's instructions. General dosing guidance for Ninjacof XG:

• Take by mouth, every 4–6 hours as needed, with a full glass of water
• Can be taken with or without food (take with food if stomach upset occurs)
• Use a calibrated measuring device (oral syringe, dosing cup) — do NOT use a household teaspoon
• Drink plenty of fluids — hydration helps loosen mucus and supports the guaifenesin component
• Do not exceed the prescribed dose or use longer than recommended

How Long Does It Take to Work?

Codeine typically begins suppressing cough within 30–60 minutes of ingestion. Guaifenesin begins thinning mucus secretions around the same time. The effects generally last 4–6 hours. If your cough does not improve within 5–7 days of use, contact your doctor — it may be a sign of a more serious underlying condition.

Storage and Disposal

Store Ninjacof XG at room temperature (59°–86°F / 15°–30°C) in a tight, light-resistant container with a child-resistant cap. Keep out of reach of children. When disposing of unused medication, use a drug take-back program or a mail-back disposal envelope — do not flush down the drain unless specifically instructed to do so.

How to Get Ninjacof XG

You'll need a valid prescription from a licensed healthcare provider to fill Ninjacof XG. Once you have your prescription, medfinder can help you find which pharmacies near you carry it in stock — saving you the effort of calling multiple pharmacies yourself.