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AH-Chew II

Generic Names Are: Methscopolamine, Chlorpheniramine, and phenylephrine [KLOR-fen-IR-a-meen, METH-skoe-POL-a-meen, FEN-il-EFF-rin]
Classification of Drugs: Upper respiratory combinations

What is AH-Chew II?

Chlorpheniramine is an antihistamine that reduces the effects of the natural chemical histamine that is present in the body. Histamine may cause symptoms such as nasal congestion, itching, eye watering, and a dry nose.

Methscopolamine lowers the amount of secretion from certain organs within the body.

Phenylephrine can be described as a decongestant that shrinks the blood vessels that line the nasal passages. Blood vessels that are dilapidated can cause the nasal passages to become congested (stuffy nostrils). AHA-Chew II is a mix medicine that treats nasal stuffiness or runny noses, itching, sneezing eyes that are watery, as well as sinus congestion due to allergies or the typical cold and an illness called the flu. The AH-Chew II can also be used to treat conditions not covered in this medication guide.

Side Effects of AH-Chew II

See a doctor immediately. If you experience any of the following symptoms that indicate reactions to an allergen, such as hives, difficulty breathing, or swelling of your lips, face, and tongue,

Serious Adverse Effects:

  • Minimal or no urination.

  • Quick, pounding, and irregular heartbeats.

  • Pale skin, weakness, shortness of breath.

  • Hallucinations, tremors, and extreme anxieties.

Mild Effects:

  • Blurred vision, headache, dizziness.

  • Drymouth, nose, or throat.

  • Nausea. 

  • Feeling anxious or restless.

This isn't a comprehensive list of all the side effects. Others could happen. Contact your physician for advice regarding medical effects. You can report any adverse reactions to the FDA at 1-800-FDA-1088.


Don't take this medication. If you've previously had an MAO inhibitor within the past 14 days. A potentially dangerous interaction between drugs can occur. MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, and selegiline. tranylcypromine.

Before You take this drug.

It is not recommended to use this medication if your body is allergic to methscopolamine, chlorpheniramine, or phenylephrine. Do not take the AH-Chew II drug if you've used an MAO inhibitor within the last 14 days. A risky drug interaction may occur. MAO inhibitors are isocarboxazid, rasagiline, linezolid, phenelzine, selegiline, tranylcypromine, and selegiline.

Consult a physician or pharmacist to determine whether it is safe to take this medication in the event that you suffer from:

  • Asthma or COPD asthma or COPD, a cough that is mucusy, or a cough that is due to smoking, emphysema, chronic bronchitis.

  • An obstruction in the stomach or intestines of your body.

  • Renal or liver illness.

  • Hypertension, heart disease, coronary artery disease.

  • Prostate enlargement or urination issues.

  • Glaucoma.

  • Pheochromocytoma (an adrenal gland tumor).

  • Excessively active thyroid.

  • If you are taking potassium (Cytra, Epiklor, K-Lyte, K-Phos Kaon, Klor-Con, Polycitra, Urocit-K).

The FDA classification for pregnant women is C. It is unclear whether this medication will cause harm to a baby who is not yet born. Do not use this medicine without medical advice if you're expecting. This medication could be absorbed in breast milk and harm a nursing child. Antihistamines or decongestants could also affect the production of breast milk. Do not use them without medical advice if you're breastfeeding a baby. Artificially sweetened cold medicine could contain phenylalanine. If you suffer from phenylketonuria (PKU), look over the label of your medication to determine whether it contains phenylalanine.

How to take AH-Chew II?

Follow the directions on the label or as directed by your physician. Don't use in greater than smaller amounts or for a longer period than recommended. The medication is typically used only for a brief period until you feel better.

Do not give this medicine to children younger than four years old. Always consult a doctor prior to giving a cold or cough medicine to children. Death can occur due to the improper use of cough or cold medications in very young children.

The tablet chewable should be chewed prior to taking it. Do not chew, or break the extended-release tablets. Take it in whole.

Measure the liquid dosage using a spoon that is specially designed for measuring doses or a medicine cup. If you do not own an instrument for measuring doses, ask your pharmacist for one. If you require surgical intervention or tests for medical reasons, inform the doctor or surgeon before the appointment time if you took this medication within the last few days. Consult your physician if symptoms don't get better after seven days of medication or if you suffer from a fever that causes headaches, coughing, or even an itchy skin eruption.

Keep it at room temperature, free from heat and moisture. Don't let the liquid version of this medicine become frozen.

What happens if I miss a dose?

Since AH-Chew is only used for emergencies, it is possible that you are not in a routine dosing program. If you're taking the medication on a regular basis, you should take the missed dose whenever you remember. Do not take your missed dose if it's nearing the time for the next dose. Do  not try take a second one dose to make up for the missed dose.

What happens if I overdose?

For medical emergencies, seek emergency medical attention or contact the Poison Help line at 1-800-222-1222.

What should be avoided?

The AH-Chew II could cause blurred vision or affect your reaction or thinking. Be aware if you drive or engage in any activity that requires that you be aware and in a position to clearly see.

Drinking alcohol can trigger the effects of chlorpheniramine in certain ways.

Talk to your doctor or pharmacist before taking any other cough, cold, allergy, or sleep medication. Antihistamines as well as decongestants are found in a wide range of combination medicines. When you combine certain medicines, it can result in excessive amounts of a specific substance. Look at the label to determine whether a medication contains an antihistamine or a decongestant.

Interaction with other drugs

Consult a physician or pharmacist before taking this medicine if you're taking any other medications, such as prescription and over-the-counter medicines, vitamins, or herbal products. Certain medicines may cause undesirable or even dangerous reactions when combined. Some interactions may not be mentioned in this medication guide.

Combining this medication with other drugs that make you sleepy or slow your breathing could increase the severity of these effects. Talk to your doctor prior to taking AH-Chew II along with sleeping pills, narcotic pain medicine, muscle relaxers, or medicines that treat depression, anxiety, depression, or seizures.