Specialist infant formulas are one of the more intimidating categories on a community pharmacy shelf. Names run to fifteen syllables, indications overlap, and a parent arriving with a red prescription from a paediatric dietitian may not know — understandably — whether "EHF" and "AAF" are the same thing or which one their baby is on.
This piece sets out a side-by-side reference for the specialist infant formulas most commonly prescribed on NHS paediatric scripts. It is aimed at community pharmacists and dispensers who need to distinguish these products quickly at the counter and counsel parents on preparation and handling.
What ACBS approval means
Specialist formulas are prescribed under Advisory Committee on Borderline Substances (ACBS) approval. The ACBS lists the specific clinical indications for which NHS reimbursement is appropriate, and the BNF for Children reproduces the prescribing notes. A GP or paediatrician prescribing outside the ACBS indication would need to justify that decision; pharmacies dispensing an ACBS formula on an NHS prescription can assume the clinical case has been made.
The main specialist categories are:
- Extensively hydrolysed formulas (EHF) — cow's milk protein broken into short peptides, tolerable by most children with cow's milk protein allergy (CMPA).
- Amino-acid formulas (AAF) — no intact peptides; used where EHF is not tolerated or in severe CMPA, multi-food allergy and some gut conditions.
- Lactose-free formulas — standard cow's milk protein with lactose removed, used in confirmed lactose intolerance (rare in infants).
- Anti-reflux (AR) formulas — thickened with starch or carob bean gum; not ACBS but widely available on prescription for significant reflux.
- Specialist metabolic formulas — for inborn errors of metabolism (PKU, MSUD, etc.), usually initiated and supervised by specialist metabolic teams.
- High-energy / preterm follow-on formulas — for faltering growth or preterm catch-up.
Side-by-side reference
| Product | Category | Main indication | Protein source | Notes |
|---|---|---|---|---|
| Nutramigen LGG | EHF | Mild–moderate CMPA | Extensively hydrolysed casein + Lactobacillus GG | Contains lactose |
| Aptamil Pepti 1 / 2 | EHF | Mild–moderate CMPA | Extensively hydrolysed whey | Contains lactose |
| Althéra | EHF | Mild–moderate CMPA | Extensively hydrolysed whey | Contains lactose |
| Similac Alimentum | EHF | CMPA with lactose intolerance | Extensively hydrolysed casein | Lactose-free |
| Neocate LCP / Syneo | AAF | Severe CMPA, multi-food allergy, faltering growth | Free amino acids | Lactose-free |
| Nutramigen Puramino | AAF | Severe CMPA, non-IgE gut disease | Free amino acids | Lactose-free |
| Alfamino | AAF | Severe CMPA, short gut, lymphangiectasia | Free amino acids | Lactose-free |
| SMA LF | Lactose-free standard | Confirmed secondary or congenital lactose intolerance | Intact cow's milk protein | Not suitable for CMPA |
| Aptamil Anti-Reflux | AR thickened | Moderate posseting and reflux | Intact whey/casein | Not ACBS; prescribable on brand |
| SMA Gold Prem 1 | Preterm | Preterm catch-up feeding | Standard cow's milk protein | Higher energy density |
| Infatrini | High-energy | Faltering growth 0–18 months | Standard cow's milk protein | 1 kcal/ml |
Protein type, osmolarity and energy density vary within each category, which is why dietitian selection matters. Two EHFs are not clinically interchangeable without the prescriber's say-so.
Preparation and handling counsel for parents
For any specialist formula, the counter conversation should cover four points:
- Follow the tin. Scoop size and water volume vary between products; a parent used to standard infant formula may pour the wrong ratio from habit. Ask them to read the instructions the first time, and again when they move to a new tin size.
- Water temperature and freshly boiled water. The NHS guidance to use freshly boiled water cooled to about 70°C still applies to most specialist formulas, but some amino-acid formulas are heat-sensitive — check the pack.
- Storage after opening. Most tins should be used within one month of opening. Kept cool and dry, lid on tight.
- Feeding-bottle hygiene. Standard sterilisation advice applies. Amino-acid formula smell and taste differs from standard formula; parents need to know this is normal.
If a baby refuses an AAF after previously accepting EHF, that is a conversation for the dietitian — a flavour change is common but may not be the only issue.
Common pharmacy scenarios
Prescription arrives for "Nutramigen" with no strength specified
Nutramigen LGG 1 is for infants under six months, Nutramigen LGG 2 is for six months and over. Confirm age on the prescription or ask the parent; avoid guessing.
Parent asks for "something similar" because the branded product is out of stock
Specialist formulas are not interchangeable without prescriber approval. The right response is to contact the GP or dietitian, not to substitute at the counter.
Prescription asks for large quantities (e.g. six months' supply)
Specialist formulas are often prescribed in bulk. The ACBS notes do not restrict quantity per se, but local prescribing policies may. Check with the prescriber if the quantity looks unusual for the product.
Parent is mixing breastfeeding with a specialist formula
Fine and common. The specialist formula is used for the known triggering feeds; breastfeeding may continue. The dietitian will usually have briefed the family, but confirm they understand which feeds to use the specialist product for.
Where parents can get more help
- Paediatric dietitian at the prescribing trust.
- GP practice if the formula is no longer tolerated or a new symptom appears.
- Allergy UK and the Anaphylaxis Campaign for patient-facing information on CMPA.
PharmSee's public pages at /app/pharmacies and /app/jobs cover adjacent topics including paediatric-focused community pharmacies and dietetic service availability in your local area.
Caveats
This overview is a reference for community pharmacists dispensing ACBS specialist formulas. It is not a substitute for the prescribing clinician's or dietitian's instructions, the BNF for Children entry, or the product Summary of Product Characteristics. Specialist formula selection should always be led by the paediatric dietitian; changes should go through the prescriber rather than being made at the counter.
Sources
- BNF for Children, Borderline substances chapter and Appendix 2 (ACBS).
- Allergy UK, Cow's milk protein allergy patient information.
- NHS, Infant feeding patient information.