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Review: Allegra and Hydrochlorothiazide

This review analyzes the effectiveness and drug interactions between Allegra and Hydrochlorothiazide. It is created by eHealthMe based on reports of 1,400 people who take the same drugs from FDA and social media, and is updated regularly.

Get connected: join a mobile support group for people who take Allegra and Hydrochlorothiazide >>>

What are the drugs

Allegra (latest outcomes from 23,843 users) has active ingredients of fexofenadine hydrochloride. It is often used in allergies.

Hydrochlorothiazide (latest outcomes from 61,913 users) has active ingredients of hydrochlorothiazide. It is often used in high blood pressure.

On Sep, 25, 2014: 1,400 people who take Allegra, Hydrochlorothiazide are studied

Allegra, Hydrochlorothiazide outcomes

Drug combinations in study:
- Allegra (fexofenadine hydrochloride)
- Hydrochlorothiazide (hydrochlorothiazide)

Drug effectiveness over time :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Allegra is effective50.00%
(1 of 2 people)
(0 of 2 people)
(0 of 1 people)
(0 of 4 people)
(3 of 5 people)
(5 of 10 people)
(2 of 3 people)
(1 of 1 people)
Hydrochlorothiazide is effectiven/a75.00%
(3 of 4 people)
(1 of 2 people)
(0 of 2 people)
(4 of 9 people)
(5 of 6 people)
(4 of 4 people)

Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
NauseaWound SecretionCardiac Failure CongestiveDeep Vein ThrombosisDeep Vein ThrombosisEmotional DistressCardiac FailurePain
AstheniaUrticariaBlood Alkaline Phosphatase DecreasedAgitationDyspnoeaPainHeart InjuryDyspnoea
Abdominal PainHaemoglobin DecreasedCataractDisorientationPain In ExtremityAnxietyRenal FailureNausea
InsomniaNeutropeniaSuicidal IdeationPulmonary EmbolismOedema PeripheralMulti-organ FailureHepatic FailureFatigue
Atrial FibrillationWhite Blood Cell Count DecreasedPathological GamblingRetrograde AmnesiaCellulitis StaphylococcalPulmonary EmbolismCardiac Failure CongestiveAnaemia
Colitis IschaemicRash ErythematousEmotional DistressMental Status ChangesCholecystitis ChronicInjuryDeathBack Pain
MalaiseOpen WoundFeeling AbnormalBlood Electrolytes DecreasedPainAnhedoniaSkin Burning SensationDiarrhoea
Frequent Bowel MovementsFallObsessive-compulsive DisorderHypokinesiaBreast Cancer FemaleRenal FailureAnxiety, Apprehension, Feeling Uptight, Jitters, Stress, Stress And Anxiety, TensionArthralgia
Muscle SpasmsInsomniaDepressionApraxiaConstipationFearFeeling JitteryAnxiety
CoughDermatitisSoporShortness Of BreathRenal ImpairmentMottled SkinOedema Peripheral

Drug effectiveness by gender :

Allegra is effective40.91%
(9 of 22 people)
(3 of 6 people)
Hydrochlorothiazide is effective59.09%
(13 of 22 people)
(4 of 5 people)

Most common drug interactions by gender * :

NauseaChest Pain
Oedema PeripheralDepression
Pain In ExtremityAbdominal Pain
Back PainMuscle Spasms

Drug effectiveness by age :

Allegra is effectiven/an/an/a100.00%
(1 of 1 people)
(1 of 2 people)
(4 of 13 people)
(5 of 34 people)
(1 of 7 people)
Hydrochlorothiazide is effectiven/an/an/a100.00%
(1 of 1 people)
(1 of 1 people)
(5 of 14 people)
(7 of 34 people)
(3 of 6 people)

Most common drug interactions by age * :

Peritoneal Effusionn/aSomnolenceBronchitisPulmonary EmbolismDyspnoeaNauseaDiarrhoea
Pleural EffusionHyperhidrosisUrinary Tract InfectionHeadachePainPainNausea
Pelvic Fluid CollectionDevice FailureCholecystitisChest PainPain In ExtremityDyspnoeaFatigue
Pancreatitis AcuteInsomniaAnxietyAnxietyPyrexiaPain
PancreatitisSinusitisDyspnoeaBack PainAnaemiaAnaemia
PneumoniaInfluenza Like IllnessDeep Vein ThrombosisOedema PeripheralHeadacheDizziness
PyrexiaCardiac Failure CongestivePain In ExtremityPneumoniaHypertensionDyspnoea
Type 2 Diabetes MellitusPresyncopeMyocardial InfarctionPyrexiaFatigueArthralgia
VomitingSupraventricular TachycardiaOedema PeripheralArthralgiaDizzinessChest Pain
Respiratory FailureTuberculin Test PositivePainNauseaVomitingMyalgia

* 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 Allegra and Hydrochlorothiazide?

Get connected! Join a mobile support group:
- group for people who take Allegra and Hydrochlorothiazide
- group for people who take Allegra
- group for people who take Hydrochlorothiazide

Comments from related studies:

  • From this study (2 weeks ago):

  • 4 months after stopping Allegra, I still have itching and rashes.
    Anxiety and panic attacks have stopped


  • From this study (2 years ago):

  • Type I Diabetes
    Secondary Chronic Kidney Disease


  • From this study (2 years ago):

  • Very tired,blood pressure is very low.


    Enisa on Mar, 25, 2012:

    just found this comment and I need to know what to do when this happens, I also use anxiety meds klonopins and I noticed that I been feeling way to dizzy most of the time also that my blood pressure gets very low in 90 or 80/60-50 and doctors keep telling me it is normal blood pressure I just don't feel it is normal because it feels like my body is telling me that is not good for me but at the same time I have very bad anxiety and I am scared to go a day with out using this medication.. anybody with more info what I could do please please let me know..


    Erica on Aug, 25, 2012:

    I was receiving inpatient treatment for acute depression and anxiety in 2006. My doctor felt I should be on an anti-depressant combined with an anti-psychotic. Each anti-psychotic I was prescribed had negative side effects on me, risperdal being the worst. I was told to take it in the evening and did so. I woke up in the middle of the night feeling unable to breathe. I stood up and immediately fainted as I stood at the nurses station. Long story short they told me the risperdal causes orthostatic hypotension in some people and I couldn't take it anymore. I also refused to take any other antispsychotics after that point because of the side effects. If this is causing you extreme low blood pressure and fainting, you probably shouldn't be on it either, it can be extremely dangerous.


Post a new comment    OR    Read more comments

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Complete drug side effects:

On eHealthMe, Allegra (fexofenadine hydrochloride) is often used to treat allergies. Hydrochlorothiazide (hydrochlorothiazide) is often used to treat high blood pressure. 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).

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.


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