Guaifenesin
Respiratory System
Cough preparations
BNF 0309020G0
Data updated May 2026
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Guaifenesin was ranked 1199th of 1,792 medicines by items in May 2026, with 99 items, up 5.3% on a year earlier.
99items
+5.3%
Dispensed in May 2026
1,416items
Rolling 12 months
£535
Net ingredient cost · May 2026
Figure 1. Guaifenesin: national items dispensed by month
Source: NHSBSA Prescription Cost Analysis, to May 2026
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At a glance
- Therapeutic class Cough preparations
- Presentations 6 shown
- Average cost / item £5.40
- Year on year Up 5.3% on a year earlier
What this is
Net ingredient cost is the list price before discounts and dispensing fees, not what the NHS finally pays.
Top presentations, May 2026
The individual products dispensed under Guaifenesin this month.
| Presentation | BNF code | Items | Net ingredient cost |
|---|---|---|---|
| Robitussin Chesty Cough 100mg/5ml oral solution | 0309020G0BBACAB | 71 | £397 |
| Covonia Chesty Cough Sugar Free syrup | 0309020G0BVAAAE | 12 | £60 |
| Benylin Chesty Coughs Non-Drowsy oral solution | 0309020G0BNACAP | 9 | £44 |
| Benylin Mucus Cough Max Honey & Lemon Flavour 100mg/5ml syr | 0309020G0BNAHAB | 5 | £26 |
| Benylin Children's Chesty Coughs 50mg/5ml oral solution | 0309020G0BNADAN | 1 | £3 |
| Benylin Mucus Cough Max Menthol 100mg/5ml oral solution | 0309020G0BNAGAB | 1 | £5 |
Source: NHSBSA Prescription Cost Analysis · to May 2026 OGL v3.0
Where Guaifenesin is dispensed
The regions and dispensing practices with the highest Guaifenesin volumes.
Top regions
Top dispensing practices
Regional volumes from NHSBSA Prescription Cost Analysis; practice volumes from NHS dispensing data.
Compare Guaifenesin with
Other medicines in the same BNF section, by prescribing volume.