The Kit Yamoyo anti-diarrhoea kit

The Kit Yamoyo anti-diarrhoea kit was conceived by ColaLife, a UK Charity, which asked itself the question: Coca-Cola seems to get everywhere in developing countries, yet essential, life-saving medicines don’t. Why?

ColaLife worked with global health agencies, including UNICEF, and the Ministry of Health in Zambia, to study Coca-Cola’s techniques. We also consulted parents and carers of children in Zambia and more widely, and applied our learning to the design, marketing and distribution of a new, life-saving diarrhoea treatment kit. Kit Yamoyo contains the established global recommendation: ORS and Zinc, and also a small soap bar for hand-washing.

Kit Yamoyo has achieved approval for general sale in Zambia, through ZAMRA and the Ministry of Health, and has won many health awards. It is now available in Zambia in a mojor supermarket chain, bringing it closer to people across Zambia. The Ministry of Health is also adopting the design for Health Centres. Kit Yamoyo is manufactured by Pharmanova in Zambia.

Zambian customers across the country can now try Kit Yamoyo for their sick children – and tell us their experiences.

Our first trial showed  compelling results. Perhaps the most important finding was that in the 12 months of the trial, we increased the % of children who received the recommended treatment for diarrhoea, from less than 1% to 45%.

We achieved this through twin approaches: redesigning a global recommendation to better meet the needs of customers (a process of ‘human centred design’) and the development of existing distribution channels, that can even reach remote communities. These are already used for fast-moving consumer goods like Coca-Cola, sugar, salt, cooking oil. ORS and Zinc are ‘general sales’ items in Zambia and in most countries. So, we could learn from other products to establish a viable ‘value chain’ for Kit Yamoyo. This proved more important than the original ColaLife concept, which was to ‘piggy-back’ product within cola crates. But innovation is about failing and learning, as well as success: that original idea didn’t help distribution, but it unlocked other innovations – which worked. As with many innovations, pursuing the original concept accidentally revealed others, which worked better in real life.

Following a successful trial, ColaLife is now leading a scale-up of the approach in Zambia.


1 The product

The two commercial formats of the Kit Yamoyo anti-diarrhoea kit incorporate all the learning from a robust, quasi-experimental 12-month trial, serving two remote rural areas of Zambia. They are: the Screw-top and the Flexi-pack.

The contents are based on the WHO/UNICEF recommendations for a diarrhoea treatment kit but we have added soap to encourage hand washing and give us a device to promote prevention – although there is a preventative element to the Zinc component as well. A key design breakthrough is providing packaging which can measure safe water for new, small format sachets of oral rehydration salts (ORS). The trial clearly demonstrated better mixing and ease of use, resulting in strong customer confidence. Both formats contain:

  • 4 x small format ORS Sachets (4g/200ml)
  • 1 x blister pack of 10 Zinc tablets (20mg)
  • 1 x 25g bar of soap
  • 1 x instruction leaflet

1.1 The Screw-top

The screw-top container is produced from a standard ‘pre-form’ already availalbe in Zambia, which is heated and blown into our own Kit Yamoyo mould. It has the following features:

          • It acts as the measuring device for the water needed to mix the 200mg ORS sachets correctly
          • It acts as the mixing device for making the ORS solution
          • It is a storage device for the mixed ORS
          • It is a cup
          • The screw-top has indented sides (which are not evident in this image) which enable it to be held easily by a child
          • It has a clear measuring mark for 200ml water
          • The brand is embossed on the jar

For a better idea of how the mixing and cup features work please see the information leaflet shown below.

1.2 The Flexi-pack

Kit Yamoyo flexi-pack ex AmcorThe Flexi-pack was originally conceived as a refill for the Screw-top but is likely to become the primary product. It is cheaper, yet retains the key functionality of measuring and contains the same ingredients as the Screw-top; price is crucial in the markets that the kit is aimed at. Despite its apparent simplicity, the packaging it quite sophisticated. It is a gusseted bag with an easy-to-open laser cut, and it stands up well when filled with water to measure what is required to accurately make up the ORS sachets provided. Instructions are printed on the bag and are also graphically displayed on the removeable leaflet inside.

The video below shows the Flexi-pack in action.


2 The components

2.1 ORS

ColaLife 4g/200ml ORS Sachets

Focus group work carried out before our trial began revealed that customers (mainly mothers and carers of children in remote/poor settings) had difficulty measuring the 1 litre of water needed to mix the standard-issue ORS sachet. A litre is not well understood, and measuring devices uncommon in many poor African homes. In any case, a child will only drink an average of 400ml in a day; one is supposed to throw away any remaining solution after 24 hours. So, following the instructions on a conventional 1 litre pack, customers are expected to throw away more ORS than they use. This is seen as a waste of ORS and – just as crucial – a waste of water carried a long distance.

So, the Kit Yamoyo ORS sachets are designed to make up just 200ml of solution, with the packaging used as the measure for the water needed.

This simple innovation led to 93% of Kit Yamoyo users mixing the ORS correctly compared to less than 60% of users who are given that standard 1 litre sachet. It also extended the number of days that ORS was given as there was no waste.

2.2 Zinc

Models of new Zinc packaging

Following the trial, our pharmaceutical partner started production of their own Zinc product. This gives us the opportunity to influence the design of the packaging. We have had great success, through design, in increasing the adherence to the correct mixing of ORS and through this blister pack design we expect to increase adherence to the correct Zinc regime (10 days).

2.3 Information leaflet

The information leaflet for the Screw-top and the Flexi-pack are the same: a double-sided, single-fold format. We have gone away from a tri-lingual design, which we found that very few people read, to the use of minimal text in English only, and simple diagrams.

Kit Yamoyo Leaflet - ORS - Front

Kit Yamoyo Leaflet - ORS - Back

For more details on the background to the development of the Kit Yamoyo please see:

Further details of our work is available from our website:




Speak Your Mind