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Review: Pepcid Ac and Tysabri

This review analyzes the effectiveness and drug interactions between Pepcid Ac and Tysabri. It is created by eHealthMe based on reports of 104 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 Pepcid Ac and Tysabri >>>

What are the drugs

Pepcid ac (latest outcomes from 3,312 users) has active ingredients of famotidine. It is often used in gastroesophageal reflux disease.

Tysabri (latest outcomes from 97,677 users) has active ingredients of natalizumab. It is often used in multiple sclerosis.

On Sep, 6, 2014: 104 people who take Pepcid Ac, Tysabri are studied

Pepcid Ac, Tysabri outcomes

Drug combinations in study:
- Pepcid Ac (famotidine)
- Tysabri (natalizumab)

Drug effectiveness over time :


Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
LethargyHypersensitivityAstrocytomaFallSepsisn/an/aUrinary Tract Infection
Device Related InfectionNecrotising ColitisPregnancyPregnancyCryptococcal FungaemiaMultiple Sclerosis Relapse
Septic EncephalopathyEnterococcal InfectionUrinary Tract InfectionSensory DisturbancePsychotic BehaviourHeadache
Localised InfectionAbdominal SepsisMultiple Sclerosis RelapseBreech PresentationMultiple Sclerosis RelapseHypersensitivity
NauseaAbscess FungalMultiple SclerosisChronic Obstructive Pulmonary DiseaseMood SwingsFatigue
Staphylococcal SepsisPostoperative AbscessPneumoniaMeningitis CryptococcalDizziness
Urinary Tract InfectionHot FlushAcute Respiratory FailurePyelonephritisAsthenia
VomitingDysphagiaMuscular WeaknessFallHypertension
DyspnoeaErythemaMuscle InjurySinusitisFall
Blood Pressure Systolic IncreasedRash PapularMyositis OssificansUrinary Tract InfectionVisual Impairment

Drug effectiveness by gender :


Most common drug interactions by gender * :

Urinary Tract InfectionSepsis
Multiple Sclerosis RelapsePsychotic Behaviour
FatigueStaphylococcal Sepsis
DizzinessMultiple Sclerosis Relapse
HypertensionUrinary Tract Infection
HypoaesthesiaMood Swings
FallCryptococcal Fungaemia
Visual ImpairmentMeningitis Cryptococcal

Drug effectiveness by age :


Most common drug interactions by age * :

n/an/aAbdominal PainPregnancyHeadacheHypersensitivityUrinary Tract InfectionTransient Ischaemic Attack
Crohn's DiseaseNauseaHypoaesthesiaUrinary Tract InfectionNecrotising ColitisMultiple Sclerosis Relapse
Procedural PainAstheniaMultiple Sclerosis RelapsePyelonephritisHeadacheFall
Hepatic Enzyme IncreasedHiv InfectionFatigueSepsisAbdominal SepsisVisual Impairment
EncephalopathyAstrocytomaSinusitisPostoperative AbscessImpaired Driving Ability
PyrexiaAffective DisorderPsychotic BehaviourAstheniaUrinary Incontinence
Abortion SpontaneousChest DiscomfortFatigueHypertensionCerebrovascular Accident
Hepatitis BDuodenal ObstructionMeningitis CryptococcalParaesthesiaHypertension
PainDuodenal Ulcer PerforationMultiple Sclerosis RelapseEnterococcal InfectionCerebral Haemorrhage
Abdominal PainAggressionCryptococcal FungaemiaDizzinessBlindness

* 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 Pepcid Ac and Tysabri?

Get connected! Join a mobile support group:
- group for people who take Pepcid Ac and Tysabri
- group for people who take Pepcid Ac
- group for people who take Tysabri

Can you answer these questions (what is this?):

More questions for: Pepcid Ac, Tysabri

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More reviews for: Pepcid Ac, Tysabri

Complete drug side effects:

On eHealthMe, Pepcid Ac (famotidine) is often used to treat gastroesophageal reflux disease. Tysabri (natalizumab) is often used to treat multiple sclerosis. 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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