The recommended dosage for dextromethorphan Hcl, chlorpheniramine maleate, and phenylephrine Hcl syrup will depend on the specific product you are using and your age, weight, and other factors. It is important to follow the dosage instructions provided by your healthcare provider or on the product label. Do not take more or less of this medication than directed, and do not take it for longer than recommended.

If you have any questions or concerns about the dosage of this medication, you should talk to your healthcare provider. They will be able to advise you on the appropriate dose for your specific needs.

It is important to note that taking this medication in larger doses or for longer periods of time than recommended can increase the risk of side effects and may not provide additional benefit.

Side effect

Like all medications, dextromethorphan Hcl, chlorpheniramine maleate, and phenylephrine Hcl syrup can cause side effects in some people.

Possible side effects of this medication may include:

• Drowsiness
• Dry mouth, nose, or throat
• Nausea
• Vomiting
• Constipation
• Blurred vision
• Restlessness

In rare cases, this medication may cause serious side effects, such as:

• Rapid or irregular heartbeat
• Chest pain
• Difficulty breathing
• Swelling of the face, lips, tongue, or throat
• Rash or hives

If you experience any of these side effects, you should stop taking the medication and contact your healthcare provider right away.

It is important to let your healthcare provider know about all medications you are taking, including over-the-counter drugs, herbal supplements, and vitamins, as these can interact with each other and may cause adverse reactions.