What is Dolorex? Uses, warnings & side effects

Updated May 14, 2025  •  Published Dec 30, 2020

Dolorex overview

BRAND NAMES:

  • Dolorex, Percogesic, Rhinoflex-650, Novagesic, Percogesic, Rhinoflex-650, Dolorex, Percogesic, Relagesic, Rhinoflex-650, Relagesic, Rhinoflex-650

Generic Names:

  • Dolorex

Uses:

  • Treats pain, decreases fever, and helps decrease certain allergy and hay fever symptoms., Treats minor pain, reduces fever, and relieves cold and flu symptoms.

Therapeutic Classes:

  • Acetaminophen/Salicylate, Non-Aspirin Combination, Acetaminophen Combination, Analgesic, Skeletal Muscle Relaxant, Centrally Acting/Acetaminophen Combination, Acetaminophen Combination, Analgesic, Antihistamine, Ethanolamine/Acetaminophen Combination, Skeletal Muscle Relaxant, Centrally Acting/Acetaminophen Combination

Forms:

  • Tablet, Capsule, Liquid Filled Capsule, Liquid, Tablet

How it’s taken:

  • By mouth, By mouth

What is Dolorex used for?

What form(s) does Dolorex come in?

  • Tablet

  • Capsule

  • Liquid Filled Capsule

  • Liquid

  • Tablet

What are common Dolorex dosages?

  • Bottle 24 Tablets

How to take Dolorex

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • This medicine contains acetaminophen. Read the labels of all other medicines you are using to see if they also contain acetaminophen, or ask your doctor or pharmacist. Do not use more than 4 grams (4,000 milligrams) total of acetaminophen in one day.

  • Do not use this medicine for pain for more than 10 days in an adult, or for more than 5 days in a child. Do not take it for fever for more than 3 days, unless your doctor tells you to.

  • Liquid: Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • This medicine contains acetaminophen. Read the labels of all other medicines you are using to see if they also contain acetaminophen, or ask your doctor or pharmacist. Do not use more than 4 grams (4,000 milligrams) total of acetaminophen in one day.

  • Do not use this medicine for pain for more than 10 days in an adult, or for more than 5 days in a child. Do not take it for fever for more than 3 days, unless your doctor tells you to.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Liquid: Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

What to do if you miss a dose of Dolorex

Dolorex contraindications - Who shouldn't take Dolorex?

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to acetaminophen or phenyltoloxamine.

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to acetaminophen or to phenyltoloxamine. Do not give this medicine to children younger than 6 years, unless a doctor tells you to. Do not give this medicine to treat arthritis pain in children younger than 12 years unless a doctor tells you to.

Dolorex warnings

  • Tell your doctor if you are pregnant or breastfeeding.

  • Tell your doctor if you have glaucoma, kidney or liver problems, breathing problems such as asthma or COPD (emphysema or chronic bronchitis), or trouble urinating due to an enlarged prostate gland. Tell your doctor if you drink alcohol on a regular basis.

  • This medicine may make you drowsy. Do not drive or use machines if you are not alert.

  • Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • This medicine contains acetaminophen. Read the labels of all other medicines you are using to see if they also contain acetaminophen, or ask your doctor or pharmacist. Do not use more than 4 grams (4,000 milligrams) total of acetaminophen in one day.

  • Tell your doctor if you are pregnant or breastfeeding, or if you have liver or kidney disease.

  • This medicine may make you dizzy or drowsy. Do not drive or use machines if you are not alert.

Dolorex interactions & what to avoid when taking Dolorex

  • Some medicines and foods can affect how this medicine works. Tell your doctor if you are taking any of the following: A blood thinner, such as warfarinMedicine that contains acetaminophenMedicine that makes you sleepy, such as allergy medicine or narcotic pain medicine

  • Do not drink alcohol while you are using this medicine. Acetaminophen can damage your liver, and alcohol can increase this risk. If you regularly drink 3 or more alcoholic drinks every day, do not take any medicines that contain acetaminophen without asking your doctor. A drink of alcohol is 12 ounces of beer, 4 ounces of wine, or 1 ounce of liquor.

  • This medicine contains acetaminophen. Read the labels of all other medicines you are using to see if they also contain acetaminophen, or ask your doctor or pharmacist. Do not use more than 4 grams (4,000 milligrams) total of acetaminophen in one day.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Some medicines and foods can affect how this medicine works. Tell your doctor if you are taking any medicine that contains acetaminophen.

  • Do not drink alcohol while you are using this medicine. Acetaminophen can damage your liver, and alcohol can increase this risk. If you regularly drink 3 or more alcoholic drinks every day, do not take any medicines that contain acetaminophen without asking your doctor. A drink of alcohol is 12 ounces of beer, 4 ounces of wine, or 1 ounce of liquor.

  • Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.

  • Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Dolorex side effects - How does Dolorex make you feel?

Serious Side Effects

  • Unusual bleeding, bruising, or weakness

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Skin rash, redness, or swelling

  • Unusual bleeding, bruising, or weakness

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Fever that continues for longer than 3 days after you started taking this medicine

  • Pain that continues for longer than 10 days after you started taking this medicine

Less Serious Side Effects

  • Nausea or vomiting

  • New or worsening symptoms

  • Excitability or other mood or behavior changes, especially in children

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