PharmAssist

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PharmAssist is a web application that assists users in keeping track of their medication regimen and provides useful personalized information to help increase their medication adherence.

Technologies Used

Core Technologies

Backend

• Database: MongoDB
• Server-side framework: Express.js
• Web server: Node.js

Frontend

• Client-side framework: React/Redux

Third Party APIs

• openFDA Drug API
• NLM RxNav API
• Google Maps API

Features

Map Locating Nearest Pharmacies

Using the Google Maps API, users will have a map that marks the pharmacies closest to their current location (if their location services are enabled).

The request to query for pharmacies is first constructed as an object.

//frontend/src/components/map/map.js
const request = {
    query: 'pharmacy',
    fields: ['name', 'formatted_address', 'geometry']
};

The request object is passed as an argument into the built in method from the Google Maps API, findPlaceFromQuery. The results are then iterated over to create a marker for each query result and the user's map is centered to the first query result.

//frontend/src/components/map/map.js
const service = new window.google.maps.places.PlacesService(map);
service.textSearch(request, cb);

service.findPlaceFromQuery(request, (results, status) => {
    if (status === window.google.maps.places.PlacesServiceStatus.OK && results) {
        for (let i = 0; i < results.length; i++) {
            createMarker(results[i]);
        }
        map.setCenter(results[0].geometry.location);
    }
})

Medication List Additions with Search Bar Integration

Users can add a new medication regimen to their list through a form that integrates search bar functionality to find the correct medication. The user starts by typing in the brand name of the medication. As they type, a GET request to the RxNav API is performed with their input through axios. If a valid medication is found, the result is displayed and available for the user to select.

//frontend/src/components/medication_form/medication_create_form.js
const changeSearchVal = (e) => {
    setSearchVal(e.target.value);
    if (searchVal && searchVal.length > 3) {
        axios.get(`https://rxnav.nlm.nih.gov/REST/Prescribe/displaynames.json`)
        .then(res => setData(res.data))
        .catch(err => console.log(err.response.data));
    } else {
        setData([]);
    }
};

Future Features

• Daily medication intake checklist