def get_drug_inhibition_stmts(drug):
    chebi_id = drug.db_refs.get('CHEBI')
    mesh_id = drug.db_refs.get('MESH')
    if chebi_id:
        drug_chembl_id = chebi_client.get_chembl_id(chebi_id)
    elif mesh_id:
        drug_chembl_id = get_chembl_id(mesh_id)
    else:
        logger.error('Drug missing ChEBI or MESH grounding.')
        return None
    logger.info('Drug: %s' % (drug_chembl_id))
    query_dict = {'query': 'activity',
                  'params': {'molecule_chembl_id': drug_chembl_id,
                             'limit': 10000}
                  }
    res = send_query(query_dict)
    activities = res['activities']
    targ_act_dict = activities_by_target(activities)
    target_chembl_ids = [x for x in targ_act_dict]
    protein_targets = get_protein_targets_only(target_chembl_ids)
    filtered_targ_act_dict = {t: targ_act_dict[t]
                              for t in [x for x in protein_targets]}
    stmts = []
    for target_chembl_id in filtered_targ_act_dict:
        target_activity_ids = filtered_targ_act_dict[target_chembl_id]
        target_activites = [x for x in activities
                            if x['activity_id'] in target_activity_ids]
        target_upids = []
        targ_comp = protein_targets[target_chembl_id]['target_components']
        for t_c in targ_comp:
            target_upids.append(t_c['accession'])
        evidence = []
        for assay in target_activites:
            ev = get_evidence(assay)
            if not ev:
                continue
            evidence.append(ev)
        if len(evidence) > 0:
            for target_upid in target_upids:
                agent_name = uniprot_client.get_gene_name(target_upid)
                target_agent = Agent(agent_name, db_refs={'UP': target_upid})
                st = Inhibition(drug, target_agent, evidence=evidence)
                stmts.append(st)
    return stmts