I have solid textbook-backed information now. Here is a practical OPD prescription guide:
OPD Medications for Productive Cough + Post-Coughing Chest Discomfort (No Fever)
Working diagnosis: Acute Bronchitis (most likely viral - self-limiting, ~10-20 days)
First, rule out pneumonia (check for tachycardia, tachypnea, fine rales, consolidation signs). If vitals are normal and chest exam is reassuring, you can manage in OPD.
SYMPTOMATIC TREATMENT (Evidence-based OPD Rx)
1. For the Productive Cough
| Drug | Dose | Notes |
|---|
| Dextromethorphan (DXM) 15 mg | 15 mg TDS/QID | First-choice antitussive; reduces cough severity |
| Guaifenesin (expectorant) 200-400 mg | 200-400 mg TDS | Thins secretions, aids expectoration; common in combo syrups (DXM+guaifenesin) |
| Ambroxol 30 mg | 30 mg TDS | Mucolytic - breaks down mucus; very commonly used in South Asian OPD practice |
| Bromhexine 8 mg | 8 mg TDS | Mucolytic alternative to ambroxol |
Codeine as a cough suppressant is not recommended for acute bronchitis. - Berek & Novak's Gynecology, p. 1051
"The efficacy of any expectorant is not proved" but they are commonly prescribed for symptomatic relief. Guaifenesin/dextromethorphan combinations are the preferred antitussive choice. - Berek & Novak's Gynecology, p. 1051
2. For Chest Discomfort (musculoskeletal, from excessive coughing)
| Drug | Dose | Notes |
|---|
| Paracetamol 500-1000 mg | TDS after food | First-line analgesic; safe, no GI risk |
| Ibuprofen 400 mg | TDS after food (3-5 days) | NSAID; good for musculoskeletal chest wall pain; avoid in GI-sensitive pts |
| Diclofenac 50 mg | BD-TDS after food | Alternative NSAID; add PPI (omeprazole 20 mg OD) if used >3 days |
3. If Wheeze / Bronchospasm Component Present
| Drug | Dose | Notes |
|---|
| Salbutamol inhaler (100 mcg/puff) | 2 puffs TDS PRN | If patient has cough with wheeze or chest tightness |
Guidelines do NOT routinely recommend inhaled bronchodilators for uncomplicated acute bronchitis - use only if bronchospasm is suspected. - Fishman's Pulmonary Diseases, p. 1688
ANTIBIOTICS? NO (Routine)
Do NOT prescribe antibiotics unless:
- Chest X-ray shows infiltrates (consolidation suggesting pneumonia)
- Patient is elderly with comorbidities
- Suspicion of whooping cough (cough >2 weeks - treat with azithromycin 500 mg Day 1, then 250 mg Days 2-5)
71% of patients with acute bronchitis in the US are inappropriately prescribed antibiotics. Guidelines from IDSA and CDC uniformly recommend avoiding antibiotics for acute uncomplicated bronchitis. - Fishman's Pulmonary Diseases, p. 1692-1694
SAMPLE OPD PRESCRIPTION
1. Tab Paracetamol 500 mg - 1 tab TDS x 5 days (after food)
2. Tab Ambroxol 30 mg - 1 tab TDS x 5 days (after food)
3. Syp Dextromethorphan + Guaifenesin (e.g., Benadryl DR / Ascoril LS / Grilinctus) - 10 ml TDS x 5 days
4. Tab Ibuprofen 400 mg - 1 tab BD x 3 days (after food) [for chest wall discomfort]
SAFETY FLAGS - Refer/Investigate if:
- Fever develops (rule out pneumonia - get CXR + CBC)
- Hemoptysis
- Breathlessness worsening
- Cough persists >2-3 weeks (consider pertussis, TB, asthma)
- SpO2 <94%
General advice to patient: Rest, hydration (warm fluids, steam inhalation), avoid cold air, no smoking. Most resolve in 10-20 days without antibiotics.