MID-VOLUME · FEMALE-LED

liothyronine Side Effects

liothyronine (also sold as Cytomel) sits MID-VOLUME #340 of 524 by FAERS report count. Lead signal: FEMALE-LED - 89% of sex-coded reports are female (6,866 F / 852 M). Demographics and serious-outcome tables follow.

Data updated 2026-05-15

8,408
FAERS reports

FDA Adverse Event Reporting System extract for liothyronine. Stamp set WATCHLIST · DEATH-MARKED · HOSP-MID. How figures are compiled.

liothyronine reporting skew - 89% of sex-coded reports are female (6,866 F / 852 M). Volume band MID-VOLUME #340 of 524 by FAERS report count; caseload WATCHLIST.

Mid-book FAERS page for liothyronine (Cytomel) (8,408 reports). Signature FEMALE-LED. Dominant age band on file: 45-64. Educational reference only.

Counts from the openFDA FAERS extract (2004–2025). Stamps WATCHLIST · DEATH-MARKED · HOSP-MID · FEMALE-LED.

HEADACHE leads 859 of 8,408 reports

HEADACHE
859
FATIGUE
816
NAUSEA
569
DYSPNOEA
549
PAIN
469
HYPERTENSION
461
MALAISE
431
WEIGHT INCREASED
431
HYPOTHYROIDISM
426
FEELING ABNORMAL
411
DIZZINESS
385
DIARRHOEA
374
ASTHMA
354
INSOMNIA
351
GASTROOESOPHAGEAL REFLUX DISEASE
350
BURNING SENSATION
332
ANXIETY
328
FIBROMYALGIA
327

FEMALE-LED reporters · age peak 45-64

Female-led reporters (89% of sex-coded rows)

Female 6,866 (89%)
Male 852 (11%)
Unknown 7

Age peak 45-64 (2,556 reports)

0-17 62 (1%)
18-44 827 (18%)
45-64 2,556 (54%)
65-74 868 (18%)
75+ 393 (8%)

FAERS filings rising toward 2025

2004 2025

Reactions in Death Reports

Death appears on 195 reports (2.3% - MARKED). Reactions below co-occur in those rows only.

Reaction Reports
DEATH 92
COMPLETED SUICIDE 23
DYSPNOEA 15
FALL 13
TOXICITY TO VARIOUS AGENTS 12
NAUSEA 10
PYREXIA 9
SEPSIS 9
CARDIAC ARREST 8
ATRIAL FIBRILLATION 7
COUGH 7
DIARRHOEA 7
PAIN 7
PLEURAL EFFUSION 7
RENAL FAILURE 7
RESPIRATORY FAILURE 7
VOMITING 7
CONDITION AGGRAVATED 6
GENERAL PHYSICAL HEALTH DETERIORATION 6

Reactions in Hospitalization Reports

Hospitalization mid-share (1,457, 17.3%). Co-reported reactions:

Reaction Reports
HEADACHE 317
HYPERTENSION 281
DYSPNOEA 268
HYPOTHYROIDISM 243
ASTHMA 240
CARDIAC DISORDER 238
GASTROOESOPHAGEAL REFLUX DISEASE 227
BURNING SENSATION 222
THERAPEUTIC PRODUCT EFFECT INCOMPLETE 222
FIBROMYALGIA 219
CARPAL TUNNEL SYNDROME 217
SLEEP APNOEA SYNDROME 214
RHINITIS ALLERGIC 213
BLOOD TEST ABNORMAL 212
SENSITISATION 211
POLYCYSTIC OVARIES 209
SLEEP DISORDER DUE TO A GENERAL MEDICAL CONDITION 200
LOSS OF PERSONAL INDEPENDENCE IN DAILY ACTIVITIES 191
RENAL DISORDER 185
EJECTION FRACTION 176
How to read liothyronine FAERS figures (WATCHLIST · DEATH-MARKED · HOSP-MID)

FAERS holds 8,408 voluntary reports linked to liothyronine (Cytomel), 2004-2025. Death is listed on 195 (2.3%). Hospitalization appears on 1,457 (17.3%). Top co-reported indication: Product Used For Unknown Indication.

Mid-volume extract - treat DEATH-MARKED · HOSP-MID as signal-detection rates next to 89% of sex-coded reports are female (6,866 F / 852 M).

Read with liothyronine

Peers ranked by ABS(total_reports), then an ABS(death_share) pole; guide hop follows DEATH-MARKED · HOSP-MID stamps.