Depending on the particular product, a typical chlorpheniramine dosage for adults is 4 mg every 4 to 6 hours for immediate-release products or 8 to 12 mg every 8 to 12 hours for extended-release products. For children 2 to 12 years old, dosing is determined by either the child's age or weight.
The recommended dose of chlorpheniramine (an active ingredient in Chlor-Trimeton®, Tussionex®, and many other medications) will vary, depending on a number of factors, including:
- The particular product
- Your age
- The medical condition being treated
- How you respond to chlorpheniramine
- Other medications you are taking
- Other medical conditions you may have.
As is always the case, do not adjust your dosage unless your healthcare provider specifically instructs you to do so.
Depending on the particular product, a typical chlorpheniramine dose for adults is 4 mg every 4 to 6 hours (not to exceed 24 mg per day) for immediate-release products or 8 to 12 mg every 8 to 12 hours (not to exceed 24 mg in 24 hours) for various extended-release products. Keep in mind that these are general guidelines and specific medications may have different directions. Be sure to follow the directions for your particular product.
Older adults, who may be more sensitive to chlorpheniramine side effects, may need a lower or less frequent dosage.