In the MedicinalProductIngredient resource for FHIR r4 , the allergenicIndicator attribute identifies the If the ingredient is a known or suspected allergen
"allergenicIndicator":
"identifier":
"role": {
"coding": [
{
"system": "http://ema.europa.eu/example/ingredientRole",
"code": "ActiveBase"
}
]
}
"allergenicIndicator":
"manufacturer": [
{
"reference": "Organization/example"
}
]
"specifiedSubstance": [
{
"code": {
"coding": [
{
"system": "http://ema.europa.eu/example/specifiedSubstance",
"code": "equixabanCompanyequixaban1"
}
]
},
"group": {
"coding": [
{
"system": "http://ema.europa.eu/example/specifiedSubstanceGroup",
"code": "2"
}
]
}
}
]
"substance": {
"code": {
"coding": [
{
"system": "http://ema.europa.eu/example/substance",
"code": "EQUIXABAN"
}
]
},
"strength": [
{
"presentation": {
"numerator": {
"value": 2.5,
"unit": "mg"
},
"denominator": {
"value": 1,
"unit": "{tablet}"
}
}
}
]
}