diff --git a/pyproject.toml b/pyproject.toml
index a1040a4..c84b324 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -141,7 +141,7 @@ ignore = [
 # B011 - assert-false
 # INP001 - implicit-namespace-package
 # D103 - missing-docstring-public-function
-"tests/*" = ["ANN001", "ANN2", "ANN102", "S101", "B011", "INP001", "D103"]
+"tests/*" = ["ANN001", "ANN2", "ANN102", "S101", "B011", "INP001", "D103", "D100"]
 
 [tool.ruff.format]
 docstring-code-format = true
diff --git a/src/regbot/fetch/drugsfda.py b/src/regbot/fetch/drugsfda.py
index 240d40c..bb86954 100644
--- a/src/regbot/fetch/drugsfda.py
+++ b/src/regbot/fetch/drugsfda.py
@@ -635,7 +635,7 @@ def _get_result(data: dict, normalize: bool) -> Result:
     )
 
 
-def get_drugsfda_results(
+def make_drugsatfda_request(
     url: str, normalize: bool = False, limit: int = 500
 ) -> list[Result] | None:
     """Get Drugs@FDA data given an API query URL.
@@ -677,7 +677,7 @@ def get_anda_results(anda: str, normalize: bool = False) -> list[Result] | None:
     :return: list of Drugs@FDA ``Result``s if successful
     """
     url = f"https://api.fda.gov/drug/drugsfda.json?search=openfda.application_number:ANDA{anda}"
-    return get_drugsfda_results(url, normalize)
+    return make_drugsatfda_request(url, normalize)
 
 
 def get_nda_results(nda: str, normalize: bool = False) -> list[Result] | None:
@@ -689,4 +689,4 @@ def get_nda_results(nda: str, normalize: bool = False) -> list[Result] | None:
     :return: list of Drugs@FDA ``Result``s if successful
     """
     url = f"https://api.fda.gov/drug/drugsfda.json?search=openfda.application_number:NDA{nda}"
-    return get_drugsfda_results(url, normalize)
+    return make_drugsatfda_request(url, normalize)
diff --git a/src/regbot/fetch/rxclass.py b/src/regbot/fetch/rxclass.py
index 2337960..fc34ef6 100644
--- a/src/regbot/fetch/rxclass.py
+++ b/src/regbot/fetch/rxclass.py
@@ -1,4 +1,4 @@
-"""todo"""
+"""Fetch data from RxClass API."""
 
 import logging
 from collections import namedtuple
@@ -118,37 +118,63 @@ def _missing_(cls, value):  # noqa: ANN001 ANN206
         )
 
 
-def _get_concept(concept_raw: dict) -> DrugConcept:
-    """TODO"""
+def _get_concept(concept_raw: dict, normalize: bool) -> DrugConcept:
     return DrugConcept(
         concept_id=f"rxcui:{concept_raw['rxcui']}",
         name=concept_raw["name"],
-        term_type=TermType[concept_raw["tty"]],
+        term_type=TermType[concept_raw["tty"]] if normalize else concept_raw["tty"],
     )
 
 
-def _get_classification(classification_raw: dict) -> DrugClassification:
-    """TODO"""
+def _get_classification(
+    classification_raw: dict, normalize: bool
+) -> DrugClassification:
     return DrugClassification(
         class_id=classification_raw["classId"],
         class_name=classification_raw["className"],
-        class_type=classification_raw["classType"],
+        class_type=ClassType(classification_raw["classType"].lower())
+        if normalize
+        else classification_raw["classType"],
         class_url=classification_raw.get("classUrl"),
     )
 
 
-def _get_rxclass_entry(drug_info: dict) -> RxClassEntry:
-    """Todo"""
+def _get_relation(raw_value: str | None, normalize: bool) -> str | Relation | None:
+    if raw_value is None:
+        return None
+    if normalize:
+        return Relation(raw_value.lower())
+    return raw_value
+
+
+def _get_relation_source(raw_value: str, normalize: bool) -> str | RelationSource:
+    return RelationSource(raw_value.lower()) if normalize else raw_value
+
+
+def _get_rxclass_entry(drug_info: dict, normalize: bool) -> RxClassEntry:
     return RxClassEntry(
-        concept=_get_concept(drug_info["minConcept"]),
-        drug_classification=_get_classification(drug_info["rxclassMinConceptItem"]),
-        relation=Relation(drug_info["rela"].lower()) if drug_info["rela"] else None,
-        relation_source=RelationSource(drug_info["relaSource"].lower()),
+        concept=_get_concept(drug_info["minConcept"], normalize),
+        drug_classification=_get_classification(
+            drug_info["rxclassMinConceptItem"], normalize
+        ),
+        relation=_get_relation(drug_info.get("rela"), normalize),
+        relation_source=_get_relation_source(drug_info["relaSource"], normalize),
     )
 
 
-def make_rxclass_request(url: str, include_snomedt: bool = False) -> list[RxClassEntry]:
-    """TODO"""
+def make_rxclass_request(
+    url: str, include_snomedt: bool = False, normalize: bool = False
+) -> list[RxClassEntry]:
+    """Issue an API request to RxClass.
+
+    :param url: RxClass API URL to request
+    :param include_snomedct: if ``True``, include class claims provided by SNOMEDCT.
+        These are provided under a different license from the rest of the data and
+        may present publishability issues for data consumers.
+    :param normalize: if ``True``, try to normalize values to controlled enumerations
+        and appropriate Python datatypes
+    :return: processed list of drug class descriptions from RxClass
+    """
     with requests.get(url, timeout=30) as r:
         try:
             r.raise_for_status()
@@ -156,8 +182,10 @@ def make_rxclass_request(url: str, include_snomedt: bool = False) -> list[RxClas
             _logger.warning("Request to %s returned status code %s", url, r.status_code)
             raise e
         raw_data = r.json()
+    if not raw_data:
+        return []
     processed_results = [
-        _get_rxclass_entry(entry)
+        _get_rxclass_entry(entry, normalize)
         for entry in raw_data["rxclassDrugInfoList"]["rxclassDrugInfo"]
     ]
     if not include_snomedt:
@@ -167,9 +195,23 @@ def make_rxclass_request(url: str, include_snomedt: bool = False) -> list[RxClas
     return processed_results
 
 
-def get_drug_info(drug: str) -> list[RxClassEntry]:
-    """TODO"""
+def get_drug_class_info(
+    drug: str, include_snomedct: bool = False, normalize: bool = False
+) -> list[RxClassEntry]:
+    """Get RxClass-provided drug info.
+
+    See also RxClass getClassByRxNormDrugName API:
+        https://lhncbc.nlm.nih.gov/RxNav/APIs/api-RxClass.getClassByRxNormDrugName.html
+
+    :param drug: RxNorm-provided drug name
+    :param include_snomedct: if ``True``, include class claims provided by SNOMEDCT.
+        These are provided under a different license from the rest of the data and
+        may present publishability issues for data consumers.
+    :param normalize: if ``True``, try to normalize values to controlled enumerations
+        and appropriate Python datatypes
+    :return: list of drug class descriptions from RxClass
+    """
     url = (
         f"https://rxnav.nlm.nih.gov/REST/rxclass/class/byDrugName.json?drugName={drug}"
     )
-    return make_rxclass_request(url)
+    return make_rxclass_request(url, include_snomedct, normalize)
diff --git a/tests/fixtures/fetch_rxclass_imatinib.json b/tests/fixtures/fetch_rxclass_imatinib.json
new file mode 100644
index 0000000..57b4fe9
--- /dev/null
+++ b/tests/fixtures/fetch_rxclass_imatinib.json
@@ -0,0 +1,618 @@
+{
+	"rxclassDrugInfoList": {
+		"rxclassDrugInfo": [
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "129557000",
+					"className": "Protein-tyrosine kinase inhibitor-containing product",
+					"classType": "DISPOS",
+					"classUrl": "http://snomed.info/id/129557000"
+				},
+				"rela": "isa_disposition",
+				"relaSource": "SNOMEDCT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "27867009",
+					"className": "Antineoplastic agent",
+					"classType": "THERAP",
+					"classUrl": "http://snomed.info/id/27867009"
+				},
+				"rela": "isa_therapeutic",
+				"relaSource": "SNOMEDCT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "768609001",
+					"className": "Pyrimidine-containing product",
+					"classType": "STRUCT",
+					"classUrl": "http://snomed.info/id/768609001"
+				},
+				"rela": "isa_structure",
+				"relaSource": "SNOMEDCT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "860929000",
+					"className": "Benzamide structure-containing product",
+					"classType": "STRUCT",
+					"classUrl": "http://snomed.info/id/860929000"
+				},
+				"rela": "isa_structure",
+				"relaSource": "SNOMEDCT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "D000068877",
+					"className": "Imatinib Mesylate",
+					"classType": "CHEM"
+				},
+				"rela": "has_ingredient",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "D007945",
+					"className": "Leukemia, Lymphoid",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "D007951",
+					"className": "Leukemia, Myeloid",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "D017681",
+					"className": "Hypereosinophilic Syndrome",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "D018223",
+					"className": "Dermatofibrosarcoma",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "D034721",
+					"className": "Mastocytosis, Systemic",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "D054437",
+					"className": "Myelodysplastic-Myeloproliferative Diseases",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "L01EA",
+					"className": "BCR-ABL tyrosine kinase inhibitors",
+					"classType": "ATC1-4"
+				},
+				"rela": "",
+				"relaSource": "ATC"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000009689",
+					"className": "Increased T Lymphocyte Destruction",
+					"classType": "PE"
+				},
+				"rela": "has_pe",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000020009",
+					"className": "Bcr-Abl Tyrosine Kinase Inhibitors",
+					"classType": "MOA"
+				},
+				"rela": "has_moa",
+				"relaSource": "DAILYMED"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000020009",
+					"className": "Bcr-Abl Tyrosine Kinase Inhibitors",
+					"classType": "MOA"
+				},
+				"rela": "has_moa",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000020009",
+					"className": "Bcr-Abl Tyrosine Kinase Inhibitors",
+					"classType": "MOA"
+				},
+				"rela": "has_moa",
+				"relaSource": "FDASPL"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000175605",
+					"className": "Kinase Inhibitor",
+					"classType": "EPC"
+				},
+				"rela": "has_epc",
+				"relaSource": "DAILYMED"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000175605",
+					"className": "Kinase Inhibitor",
+					"classType": "EPC"
+				},
+				"rela": "has_epc",
+				"relaSource": "FDASPL"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000175672",
+					"className": "Cellular Proliferation Alteration",
+					"classType": "PE"
+				},
+				"rela": "has_pe",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000182137",
+					"className": "Cytochrome P450 2D6 Inhibitors",
+					"classType": "MOA"
+				},
+				"rela": "has_moa",
+				"relaSource": "FDASPL"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000182137",
+					"className": "Cytochrome P450 2D6 Inhibitors",
+					"classType": "MOA"
+				},
+				"rela": "has_moa",
+				"relaSource": "DAILYMED"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000182141",
+					"className": "Cytochrome P450 3A4 Inhibitors",
+					"classType": "MOA"
+				},
+				"rela": "has_moa",
+				"relaSource": "FDASPL"
+			},
+			{
+				"minConcept": { "rxcui": "282388", "name": "imatinib", "tty": "IN" },
+				"rxclassMinConceptItem": {
+					"classId": "N0000182141",
+					"className": "Cytochrome P450 3A4 Inhibitors",
+					"classType": "MOA"
+				},
+				"rela": "has_moa",
+				"relaSource": "DAILYMED"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284206",
+					"name": "imatinib 100 MG Oral Capsule",
+					"tty": "SCD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "L01EA",
+					"className": "BCR-ABL tyrosine kinase inhibitors",
+					"classType": "ATC1-4"
+				},
+				"rela": "",
+				"relaSource": "ATCPROD"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D000068877",
+					"className": "Imatinib Mesylate",
+					"classType": "CHEM"
+				},
+				"rela": "has_ingredient",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D001752",
+					"className": "Blast Crisis",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D004342",
+					"className": "Drug Hypersensitivity",
+					"classType": "DISEASE"
+				},
+				"rela": "ci_with",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D005770",
+					"className": "Gastrointestinal Neoplasms",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D007945",
+					"className": "Leukemia, Lymphoid",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D007951",
+					"className": "Leukemia, Myeloid",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D011247",
+					"className": "Pregnancy",
+					"classType": "DISEASE"
+				},
+				"rela": "ci_with",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D015465",
+					"className": "Leukemia, Myeloid, Accelerated Phase",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D017681",
+					"className": "Hypereosinophilic Syndrome",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D018223",
+					"className": "Dermatofibrosarcoma",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D034721",
+					"className": "Mastocytosis, Systemic",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "D054437",
+					"className": "Myelodysplastic-Myeloproliferative Diseases",
+					"classType": "DISEASE"
+				},
+				"rela": "may_treat",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "N0000008373",
+					"className": "Connective Tissue Alteration",
+					"classType": "PE"
+				},
+				"rela": "has_pe",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "N0000009689",
+					"className": "Increased T Lymphocyte Destruction",
+					"classType": "PE"
+				},
+				"rela": "has_pe",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "N0000020009",
+					"className": "Bcr-Abl Tyrosine Kinase Inhibitors",
+					"classType": "MOA"
+				},
+				"rela": "has_moa",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "284924",
+					"name": "imatinib mesylate",
+					"tty": "PIN"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "N0000175672",
+					"className": "Cellular Proliferation Alteration",
+					"classType": "PE"
+				},
+				"rela": "has_pe",
+				"relaSource": "MEDRT"
+			},
+			{
+				"minConcept": {
+					"rxcui": "403878",
+					"name": "imatinib 100 MG Oral Tablet",
+					"tty": "SCD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "AN900",
+					"className": "ANTINEOPLASTIC,OTHER",
+					"classType": "VA"
+				},
+				"rela": "has_VAClass",
+				"relaSource": "VA"
+			},
+			{
+				"minConcept": {
+					"rxcui": "403878",
+					"name": "imatinib 100 MG Oral Tablet",
+					"tty": "SCD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "L01EA",
+					"className": "BCR-ABL tyrosine kinase inhibitors",
+					"classType": "ATC1-4"
+				},
+				"rela": "",
+				"relaSource": "ATCPROD"
+			},
+			{
+				"minConcept": {
+					"rxcui": "403879",
+					"name": "imatinib 400 MG Oral Tablet",
+					"tty": "SCD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "AN900",
+					"className": "ANTINEOPLASTIC,OTHER",
+					"classType": "VA"
+				},
+				"rela": "has_VAClass",
+				"relaSource": "VA"
+			},
+			{
+				"minConcept": {
+					"rxcui": "403879",
+					"name": "imatinib 400 MG Oral Tablet",
+					"tty": "SCD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "L01EA",
+					"className": "BCR-ABL tyrosine kinase inhibitors",
+					"classType": "ATC1-4"
+				},
+				"rela": "",
+				"relaSource": "ATCPROD"
+			},
+			{
+				"minConcept": {
+					"rxcui": "404588",
+					"name": "imatinib 100 MG Oral Tablet [Gleevec]",
+					"tty": "SBD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "AN900",
+					"className": "ANTINEOPLASTIC,OTHER",
+					"classType": "VA"
+				},
+				"rela": "has_VAClass_extended",
+				"relaSource": "VA"
+			},
+			{
+				"minConcept": {
+					"rxcui": "404588",
+					"name": "imatinib 100 MG Oral Tablet [Gleevec]",
+					"tty": "SBD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "L01EA",
+					"className": "BCR-ABL tyrosine kinase inhibitors",
+					"classType": "ATC1-4"
+				},
+				"rela": "",
+				"relaSource": "ATCPROD"
+			},
+			{
+				"minConcept": {
+					"rxcui": "404589",
+					"name": "imatinib 400 MG Oral Tablet [Gleevec]",
+					"tty": "SBD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "AN900",
+					"className": "ANTINEOPLASTIC,OTHER",
+					"classType": "VA"
+				},
+				"rela": "has_VAClass_extended",
+				"relaSource": "VA"
+			},
+			{
+				"minConcept": {
+					"rxcui": "404589",
+					"name": "imatinib 400 MG Oral Tablet [Gleevec]",
+					"tty": "SBD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "L01EA",
+					"className": "BCR-ABL tyrosine kinase inhibitors",
+					"classType": "ATC1-4"
+				},
+				"rela": "",
+				"relaSource": "ATCPROD"
+			},
+			{
+				"minConcept": {
+					"rxcui": "411240",
+					"name": "imatinib 50 MG Oral Capsule",
+					"tty": "SCD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "L01EA",
+					"className": "BCR-ABL tyrosine kinase inhibitors",
+					"classType": "ATC1-4"
+				},
+				"rela": "",
+				"relaSource": "ATCPROD"
+			},
+			{
+				"minConcept": {
+					"rxcui": "483431",
+					"name": "imatinib 400 MG Oral Capsule",
+					"tty": "SCD"
+				},
+				"rxclassMinConceptItem": {
+					"classId": "L01EA",
+					"className": "BCR-ABL tyrosine kinase inhibitors",
+					"classType": "ATC1-4"
+				},
+				"rela": "",
+				"relaSource": "ATCPROD"
+			}
+		]
+	}
+}
diff --git a/tests/test_fetch_rxclass.py b/tests/test_fetch_rxclass.py
new file mode 100644
index 0000000..8506dc2
--- /dev/null
+++ b/tests/test_fetch_rxclass.py
@@ -0,0 +1,25 @@
+from pathlib import Path
+
+import requests_mock
+
+from regbot.fetch.rxclass import get_drug_class_info
+
+
+def test_get_rxclass(fixtures_dir: Path):
+    with requests_mock.Mocker() as m:
+        m.get(
+            "https://rxnav.nlm.nih.gov/REST/rxclass/class/byDrugName.json?drugName=not_a_drug",
+            text="{}",
+        )
+        results = get_drug_class_info("not_a_drug")
+        assert results == []
+
+    with (
+        requests_mock.Mocker() as m,
+        (fixtures_dir / "fetch_rxclass_imatinib.json").open() as json_response,
+    ):
+        m.get(
+            "https://rxnav.nlm.nih.gov/REST/rxclass/class/byDrugName.json?drugName=imatinib",
+            text=json_response.read(),
+        )
+        results = get_drug_class_info("imatinib", normalize=True)