Small Molecule Delivery - our offering
High purity excipients for small molecule delivery
Croda Pharma offers high purity, multi-compendial, pharmaceutical excipients for small molecule drug delivery.
Our portfolio of high purity excipient products and speciality chemistries solve formulation challenges and enhance drug delivery across a variety of administration routes and dosage forms.
Customer focused service
We aim to grow and outperform in the market sectors we serve through staying attentive to our customer’s needs and using our technical and manufacturing expertise.
Croda Pharma, your partner for Small Molecule Delivery
We are market leaders as the exclusive supplier of Super Refined™ excipients, specifically developed to optimise API stability and improve the performance of your pharmaceutical formulations, aiding in the manufacture of:
- Small molecule parenterals
- Topicals
- Opthalmic and inhalation.
Discover our Super Refined™ excipient range
Formulation challenges are not uncommon in pharmaceutical formulation, frequent challenges include the use of highly unstable APIs and excipient-drug interaction.
Our Croda experts have designed our Super Refined™ excipients to combat formulation challenges and to provide additional value to your final drug product. Our range of emulsifiers, permeation enhancers, emollients and solvents enhance stability and have a variety of formulation benefits including:
- Minimised API degradation
- Reduced impurity profiles for improved drug compatibility
- Reduced oxidation potential for increased drug stability
- Batch-to-batch consistency.
Together these benefits can add value to your final drug product through optimised drug efficacy, increased shelf life, decreased time to market, and increased patient comfort. Get in touch with one of our technical experts today to discuss your formulation needs and discover how our
Super Refined ™ range can benefit you.
Product finder

Super Refined™ excipients
Super Refined excipients are stripped of a number of oxidative impurities, such as peroxides, aldehydes, and catalyst residues. The removal of these problematic species helps to reduce negative API & excipient interactions, maintaining both the stability of the drug and the final formulation. In addition, the removal of these impurities can minimise cellular irritation, reduce taste impact, and potentially decrease allergenicity.
We have a large variety of products, ranging from various polysorbates, polyethylene glycols (PEG), esters, vegetable oils, and more.
View some of our Super Refined™ Range:

Super Refined™ PEG 400
The Super Refined PEG range is a series of Super Refined polyethylene glycols, offering pharmaceutical formulators highly purified hydrophilic excipients that can enhance active and formulation...

Super Refined™ PEG 300
The Super Refined PEG range is a series of Super Refined polyethylene glycols, offering pharmaceutical formulators highly purified hydrophilic excipients that can enhance active and formulation...

Super Refined™ Polysorbate 80
Super Refined Polysorbates solubilise and stabilise the most sensitive active ingredients across dosage forms including injectable and oral. Super Refining removes impurities (including primary and...

Super Refined™ Polysorbate 20
Super Refining removes impurities, preventing adverse interactions with APIs and enhancing the stability of pharmaceutical formulations. Super Refined Polysorbates offer the complete solution when...

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