Side effects across medicines

Medicines whose labels list hemoglobin decreased

187 medicines have an FDA label that names hemoglobin decreased in its boxed warning, warnings, adverse reactions, trial table, patient leaflet or Drug Facts “stop use” warning (of the labels PlainMeds reads: each medicine's quoted label and up to eight more, by route and wording). Among them, the most FAERS reports of hemoglobin decreased name ibuprofen (1,835), niraparib (1,750) and palbociclib (1,712), through July 30, 2026. A label lists what its studies and reports found, and a report does not show that a medicine caused the event.

Check it at the source: the FDA FAERS public dashboard; FDA labels on DailyMed.

Which medicines' labels list hemoglobin decreased?

Ordered by where the label names it, the boxed warning first, then by FAERS reports. The first 151 of the 187 are below; every other one is on its medicine record. A medicine whose own indications name it, because it treats it, is not counted.

Medicine	Where a label names it	FAERS reports of hemoglobin decreased
Lurbinectedin	warnings and precautions	none in the top 1,000
Mosunetuzumab	warnings and precautions (intravenous label)	none in the top 1,000
Tarlatamab-dlle	warnings and precautions	none in the top 1,000
Niraparib	adverse reactions	1,750
Palbociclib	adverse reactions	1,712
Ibrutinib	adverse reactions	1,206
Celecoxib	adverse reactions	985
Pomalidomide	adverse reactions	947
Ribociclib	adverse reactions	792
Fulvestrant	adverse reactions	746
Gemcitabine	adverse reactions (intravesical label)	733
Capecitabine	adverse reactions	660
Filgrastim	adverse reactions	643
Nilotinib	adverse reactions	618
Sunitinib	adverse reactions	544
Bosentan	adverse reactions	515
Risperidone	adverse reactions	456
Pembrolizumab	adverse reactions	443
Olaparib	adverse reactions	441
Azithromycin	adverse reactions	428
Enzalutamide	adverse reactions	403
Rucaparib camsylate	adverse reactions	359
Meropenem	adverse reactions	346
Carfilzomib	adverse reactions	259
Moxifloxacin	adverse reactions (intravenous label)	217
Febuxostat	adverse reactions	216
Temozolomide	adverse reactions	211
Bicalutamide	adverse reactions	200
Tipiracil and trifluridine	adverse reactions	192
Carbidopa and levodopa	adverse reactions	190
Aprepitant	adverse reactions	168
Bendamustine	adverse reactions	160
Acalabrutinib	adverse reactions	158
Relugolix	adverse reactions	151
Lutetium lu 177 vipivotide tetraxetan	adverse reactions	146
Nitrofurantoin	adverse reactions	140
Trametinib	adverse reactions	118
Panitumumab	adverse reactions	117
Bosutinib	adverse reactions	111
Brentuximab vedotin	adverse reactions	105
Polatuzumab vedotin	adverse reactions	100
Axitinib	adverse reactions	94
Durvalumab	adverse reactions	89
Caspofungin	adverse reactions	86
Talazoparib	adverse reactions	80
Rifampin	adverse reactions	73
Trastuzumab deruxtecan	adverse reactions	71
Mitoxantrone	adverse reactions	69
Ponatinib	adverse reactions	65
Cilastatin and imipenem	adverse reactions	62
Trastuzumab emtansine	adverse reactions	62
Remdesivir	adverse reactions	60
Alectinib	adverse reactions	59
Belzutifan	adverse reactions	59
Ivosidenib	adverse reactions	53
Tucatinib	adverse reactions	53
Cedazuridine and decitabine	adverse reactions	51
Elacestrant	adverse reactions	50
Encorafenib	adverse reactions	50
Temsirolimus	adverse reactions	47
Abiraterone and niraparib	adverse reactions	none in the top 1,000
Adagrasib	adverse reactions	none in the top 1,000
Alpelisib	adverse reactions	none in the top 1,000
Amivantamab	adverse reactions	none in the top 1,000
Amivantamab and hyaluronidase	adverse reactions	none in the top 1,000
Amoxicillin and clarithromycin and lansoprazole	adverse reactions	none in the top 1,000
Ampicillin and sulbactam	adverse reactions	none in the top 1,000
Anacaulase-bcdb	adverse reactions	none in the top 1,000
Asciminib	adverse reactions	none in the top 1,000
Atezolizumab and hyaluronidase	adverse reactions	none in the top 1,000
Avapritinib	adverse reactions	none in the top 1,000
Avelumab	adverse reactions	none in the top 1,000
Avibactam and aztreonam	adverse reactions	none in the top 1,000
Avutometinib and defactinib	adverse reactions	none in the top 1,000
Axatilimab	adverse reactions	none in the top 1,000
Belantamab mafodotin	adverse reactions	none in the top 1,000
Belumosudil	adverse reactions	none in the top 1,000
Berahyaluronidase alfa and pembrolizumab	adverse reactions	none in the top 1,000
Bexarotene	adverse reactions	none in the top 1,000
Blinatumomab	adverse reactions	none in the top 1,000
Brigatinib	adverse reactions	none in the top 1,000
Camizestrant	adverse reactions	none in the top 1,000
Capivasertib	adverse reactions	none in the top 1,000
Capmatinib	adverse reactions	none in the top 1,000
Carbidopa	adverse reactions	none in the top 1,000
Carglumic acid	adverse reactions	none in the top 1,000
Cefpodoxime	adverse reactions	none in the top 1,000
Ceftobiprole medocaril	adverse reactions	none in the top 1,000
Cilastatin and imipenem and relebactam	adverse reactions	none in the top 1,000
Cosibelimab	adverse reactions	none in the top 1,000
Daratumumab	adverse reactions	none in the top 1,000
Daratumumab and hyaluronidase	adverse reactions	none in the top 1,000
Daraxonrasib	adverse reactions	none in the top 1,000
Datopotamab deruxtecan	adverse reactions	none in the top 1,000
Denileukin diftitox	adverse reactions	none in the top 1,000
Deuruxolitinib	adverse reactions	none in the top 1,000
Disopyramide	adverse reactions	none in the top 1,000
Dolutegravir	adverse reactions	none in the top 1,000
Dordaviprone	adverse reactions	none in the top 1,000
Dostarlimab	adverse reactions	none in the top 1,000
Eflornithine	adverse reactions	none in the top 1,000
Elbasvir and grazoprevir	adverse reactions	none in the top 1,000
Elranatamab	adverse reactions	none in the top 1,000
Emtricitabine	adverse reactions	none in the top 1,000
Enfortumab vedotin	adverse reactions	none in the top 1,000
Ensartinib	adverse reactions	none in the top 1,000
Entrectinib	adverse reactions	none in the top 1,000
Epcoritamab	adverse reactions	none in the top 1,000
Erdafitinib	adverse reactions	none in the top 1,000
Ertapenem	adverse reactions	none in the top 1,000
Etravirine	adverse reactions	none in the top 1,000
Famotidine and ibuprofen	adverse reactions	none in the top 1,000
Fosfomycin	adverse reactions	none in the top 1,000
Fruquintinib	adverse reactions	none in the top 1,000
Gadoteridol	adverse reactions	none in the top 1,000
Gedatolisib	adverse reactions	none in the top 1,000
Glofitamab	adverse reactions	none in the top 1,000
Human botulinum neurotoxin a b immune globulin	adverse reactions	none in the top 1,000
Hyaluronidase and nivolumab	adverse reactions	none in the top 1,000
Iberdomide	adverse reactions	none in the top 1,000
Iloperidone	adverse reactions	none in the top 1,000
Imlunestrant	adverse reactions	none in the top 1,000
Inavolisib	adverse reactions	none in the top 1,000
Inotuzumab ozogamicin	adverse reactions	none in the top 1,000
Isatuximab	adverse reactions	none in the top 1,000
Lazertinib	adverse reactions	none in the top 1,000
Lonafarnib	adverse reactions	none in the top 1,000
Loncastuximab tesirine	adverse reactions	none in the top 1,000
Maraviroc	adverse reactions	none in the top 1,000
Margetuximab	adverse reactions	none in the top 1,000
Milsaperidone	adverse reactions	none in the top 1,000
Mirdametinib	adverse reactions	none in the top 1,000
Mirvetuximab soravtansine	adverse reactions	none in the top 1,000
Nadofaragene firadenovec	adverse reactions	none in the top 1,000
Naxitamab	adverse reactions	none in the top 1,000
Nivolumab and relatlimab	adverse reactions	none in the top 1,000
Odevixibat	adverse reactions	none in the top 1,000
Pemigatinib	adverse reactions	none in the top 1,000
Penpulimab	adverse reactions	none in the top 1,000
Pexidartinib	adverse reactions	none in the top 1,000
Pirtobrutinib	adverse reactions	none in the top 1,000
Pivekimab sunirine	adverse reactions	none in the top 1,000
Pralsetinib	adverse reactions	none in the top 1,000
Primaquine	adverse reactions	none in the top 1,000
Relacorilant	adverse reactions	none in the top 1,000
Repotrectinib	adverse reactions	none in the top 1,000
Retifanlimab	adverse reactions	none in the top 1,000
Rotigotine	adverse reactions	none in the top 1,000
Rusfertide	adverse reactions	none in the top 1,000
Sacituzumab govitecan	adverse reactions	none in the top 1,000
Ibuprofen	trial table	1,835

Source: FDA drug labels via openFDA, read October 8, 2026; FAERS via openFDA, reports through July 30, 2026

Which of them have the most hemoglobin decreased reports in FAERS?

Counts follow how widely a medicine is used and watched, and they are not a measure of how risky it is.

Source: FDA Adverse Event Reporting System (FAERS) via openFDA, reports through July 30, 2026; MedDRA preferred term “Haemoglobin Decreased”

What next?

Side effects across medicines: every reaction on PlainMeds
Report a side effect to the FDA: MedWatch