Local pharmacist says 4-hour chlorpheniramine is the only dosage available in the US. MD tells me it is available in 12-hour controlled release version in Canada. The question is how can I find it in Canada. I Googled but no hits vis-a-vis Canada.
- Chlorpheniramine Information for Consumers
- Chlorpheniramine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Chlorpheniramine (detailed)
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