Retrieve actual medicinal product pack info by barcode GTIN/EAN code.

Endpoint optimised to get product pack information by GTIN or EAN code.
In cases where GTIN was valid in multiple periods (often for same
product) this endpoint retrieves information for GTIN's latest use.

Example barcode API use to retrieve product information:

curl https://medicinedict.com/api/gtin/[insert barcode number]&format=json

GET /med/api/gtin/5017007016533
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "pack_id": 18812511000001100,
    "name": "Leflunomide 10mg tablets (Teva UK Ltd) 30 tablet",
    "generic_pack_name": "Leflunomide 10mg tablets 30 tablet",
    "generic_product_name": "Leflunomide 10mg tablets",
    "url": "/med/ampp/ampp/leflunomide-10mg-tablets-teva-uk-ltd-30-tablet-18812511000001100",
    "short_name": null,
    "subpack": null,
    "legal_category": "POM",
    "discontinued": "Discontinued Flag",
    "discontinued_date": "2016-10-11",
    "gtin_codes": [
        {
            "start_date": "2013-11-04",
            "end_date": "2014-05-18",
            "gtin": "5017007016533"
        },
        {
            "start_date": "2016-03-30",
            "end_date": "2017-08-06",
            "gtin": "5017007016533"
        }
    ],
    "prices": {
        "price": null,
        "price_prev": null
    },
    "invalid": null,
    "comb_content": []
}