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Review: taking Fentanyl and Levothyroxine thyroid together

Summary: drug interactions are reported among people who take Fentanyl and Levothyroxine thyroid together.

This review analyzes the effectiveness and drug interactions between Fentanyl and Levothyroxine thyroid. It is created by eHealthMe based on reports of 794 people who take the same drugs from FDA and social media, and is updated regularly.





You are not alone: join a mobile support group for people who take Fentanyl and Levothyroxine thyroid >>>

What are the drugs

Fentanyl has active ingredients of fentanyl citrate. It is often used in pain. (latest outcomes from 14,400 Fentanyl users)

Levothyroxine thyroid has active ingredients of levothyroxine sodium. It is often used in hypothyroidism. (latest outcomes from 657 Levothyroxine thyroid users)

On Feb, 26, 2015: 794 people who take Fentanyl, Levothyroxine thyroid are studied

Fentanyl, Levothyroxine thyroid outcomes

Drug combinations in study:
- Fentanyl (fentanyl citrate)
- Levothyroxine thyroid (levothyroxine sodium)

Drug effectiveness over time :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Fentanyl is effectiven/a0.00%
(0 of 1 people)
(1 of 2 people)
(2 of 3 people)
(1 of 1 people)
Levothyroxine thyroid is effectiven/an/a0.00%
(0 of 1 people)
(2 of 2 people)
(1 of 1 people)
(3 of 3 people)

Drug effectiveness by gender :

Fentanyl is effective50.00%
(3 of 6 people)
(1 of 1 people)
Levothyroxine thyroid is effective83.33%
(5 of 6 people)
(1 of 1 people)

Drug effectiveness by age :

Fentanyl is effectiven/an/an/an/an/an/a40.00%
(2 of 5 people)
(2 of 12 people)
Levothyroxine thyroid is effectiven/an/an/an/an/an/a40.00%
(2 of 5 people)
(4 of 12 people)

Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Peripheral Vascular DisorderLethargyDrug IneffectiveNauseaDental CariesFeeling AbnormalConfusionNausea
PyrexiaMultiple Drug OverdoseDiarrhoeaVomitingSwallowing DifficultyTransient Ischaemic AttackCardiac ArrestPain
HypotensionPericardial EffusionAmnesiaWeight IncreasedDry MouthDelirium TremensCoronary Artery DiseaseVomiting
NauseaPleural EffusionDysgeusiaAmnesiaSwollen TongueDrug Withdrawal SyndromeRectal HaemorrhagePyrexia
Anaphylactic ReactionDelusionVomitingRoad Traffic AccidentChest PainMuscle PainDiverticulumAnxiety
HypersensitivityHallucinationApplication Site PruritusAbnormal BehaviourNumbness And TinglingWithdrawal SyndromeItchingDyspnoea
DiarrhoeaPyrexiaDrug Withdrawal SyndromeSleep WalkingHigh Blood PressureIll-defined DisorderMuscle PainFatigue
Respiratory FailureMental Status ChangesAbdominal PainSleep TalkingItchingHigh Blood PressureBack Pain
Intermittent ClaudicationDyspnoeaApplication Site RashEating DisorderDrug DependenceChest PainAnaemia
BacteraemiaOxygen Saturation DecreasedConvulsionSepsisDrug DetoxificationDepression

Most common drug interactions by gender * :

Back PainConfusional State
DyspnoeaRenal Failure Acute
DepressionPeripheral Vascular Disorder
Weight DecreasedPneumonia

Most common drug interactions by age * :

Diabetic FoetopathyArthralgiaDrug MaladministrationOropharyngeal DiscomfortPyrexiaNauseaNauseaNausea
Maternal Drugs Affecting FoetusThrombocytopeniaConvulsionPruritusWithdrawal SyndromePyrexiaPainPain
Cardiomyopathy NeonatalWeight DecreasedHeadacheErythemaMalaiseAnaemiaVomitingRenal Failure Acute
Breech PresentationVomitingComa NecGingival DisorderAbdominal Pain UpperAnxietyPyrexiaDyspnoea
Hypoglycaemia NeonatalDecreased AppetiteCerebral InfarctionChest DiscomfortDyspnoeaImpaired HealingFatigueVomiting
Lung DisorderNauseaCerebral OedemaTremorBack PainPainPain In ExtremityDiarrhoea
Metabolic AcidosisHeadacheVasculitis NosPostural Orthostatic Tachycardia SyndromeWeight DecreasedNeck PainAnxietyAnxiety
Pneumonia StaphylococcalSpinal Cord OedemaDeafnessGlycosuriaDizzinessBack PainFallFatigue
HypothyroidismMetastases To MeningesDrug IneffectiveType 2 Diabetes MellitusHypertensionDepressionWeight IncreasedAsthenia
Atrial ThrombosisPain In ExtremityDysgeusiaHyperglycaemiaDecreased AppetiteMetastases To BonePeripheral Vascular DisorderCondition Aggravated

* Some reports may have incomplete information.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

Do you take Fentanyl and Levothyroxine thyroid?

You are not alone! Join a related mobile support group:
- support group for people who take Fentanyl and Levothyroxine thyroid
- support group for people who take Fentanyl
- support group for people who take Levothyroxine Thyroid

Recent conversations of related support groups:

Can you answer these questions (Ask a question):

More questions for: Fentanyl, Levothyroxine thyroid

You may be interested at these reviews (Write a review):

  • Syntroid and pruritus
    I have been on levothyroxine for more than ten years and have had two episodes, each lasting over several months of unbearable itching. Doctors seem to deny any connection but are also unable identify the cause of the itching. None of the tests pick anything. Antihistamines are not much of a help. I am still in the throes of the second episode and life is plain, simple miserable.
  • Thrush while on prograf
    I am a health provider at an emergency room and had a patient come in because of a food bolus and when i examined his oral/pharynx I noticed he had thrush. Patient stated it has been their for a while. Patient also stated he has been having progressive difficulty in swallowing. Pt is a kidney transplant patient and has been worked up for other causes of his thrush (including HIV, as per patient results neg) and everything came back negative. I can only conclude that maybe the prograf which is a immunosupressent can possible be the cause
  • Cardio version caused fingernail abnormalities
    Right hip fracture. When prepping for surgery AFIB was found. Surgery was cancelled and they attempted to get AFIB under control. Finally, cardioversion was performed. When my nails started to grow out they all had two horizontal lines that cause the nail to break when it grows out to that point.
  • Synthroid and breast enlargement
    I have went from a B-C cup size to a D cup in the past 8-9 months.
  • Double vision on levothyroxine
    Diagnosed with under active thyroid in January 2011. Noticed onset of double vision in January 2014. Blurred vision and double vision worsened to such an extent that my glasses prescription has changed three times in less than 7 months. All the symptons I experience are a direct result of taking Levothyrixine and have increased as my dose has been increased.

More reviews for: Fentanyl, Levothyroxine thyroid

Comments from related studies:

  • From this study (8 months ago):

  • symptoms came on suddenly after using Fentanyl patches, but did not change after stopping use of patch


  • From this study (1 year ago):

  • Went to bed and was awakened by panic attack and difficult swallowing. Finally returned to sleep and slept through the night. Today after eating normal breakfast I took my normal morning medications. A couple hours later began to develop same symptoms again. In addition to dry mouth and difficult swallowing, tongue feels swollen and lips tingling.


  • From this study (2 years ago):

  • The heart symptoms began around 4 months ago after an increase in Levothyroxine. I also was not able to continue seasonal allergy shots and began taking chlorpheniramine. I have tried many different antihistamines, all of which have caused various uncomfortable symptoms,


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Complete drug side effects:

On eHealthMe, Fentanyl (fentanyl citrate) is often used to treat pain. Levothyroxine Thyroid (levothyroxine sodium) is often used to treat hypothyroidism. Find out below the conditions the drugs are used for, how effective they are, and any alternative drugs that you can use to treat those same conditions.

What is the drug used for and how effective is it:

Other drugs that are used to treat the same conditions:

NOTE: The study is based on active ingredients. Other drugs that have the same active ingredients are also considered.

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

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