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Review: Flomax and Niacin

This review analyzes the effectiveness and drug interactions between Flomax and Niacin. It is created by eHealthMe based on reports of 735 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 Flomax and Niacin >>>

What are the drugs

Flomax (latest outcomes from 21,446 users) has active ingredients of tamsulosin hydrochloride. It is often used in enlarged prostate.

Niacin (latest outcomes from 6,307 users) has active ingredients of niacin. It is often used in high blood cholesterol.

On Sep, 28, 2014: 735 people who take Flomax, Niacin are studied

Flomax, Niacin outcomes

Drug combinations in study:
- Flomax (tamsulosin hydrochloride)
- Niacin (niacin)

Drug effectiveness over time :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Flomax is effective20.00%
(1 of 5 people)
(0 of 4 people)
(0 of 4 people)
(3 of 5 people)
(2 of 8 people)
(1 of 2 people)
(0 of 1 people)
Niacin is effective0.00%
(0 of 1 people)
(1 of 1 people)
(1 of 4 people)
(4 of 8 people)
(6 of 9 people)
(1 of 2 people)

Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
FlushingFlushingFlushingDizzinessPeptic Ulcer HaemorrhageRestless Leg SyndromeMean Cell Haemoglobin DecreasedFlushing
PruritusArthralgiaPruritusErectile DysfunctionGastric Ulcer HelicobacterLeg CrampsMean Cell Volume AbnormalPruritus
Feeling HotHyperhidrosisAnaemiaDiarrhoeaAstheniaNight SweatsRed Blood Cell Count DecreasedDizziness
DizzinessAstheniaParaesthesiaPancreatitis AcuteHelicobacter InfectionUrinary HesitationPlatelet Count DecreasedAsthenia
ParaesthesiaAbdominal DiscomfortInsomniaAgeusiaUlcerElevated Liver EnzymesElevated Liver EnzymesOedema Peripheral
Blood Glucose IncreasedRectal HaemorrhageRhabdomyolysisGastric UlcerDiarrhoeaDizzinessParaesthesia
DiarrhoeaFatigueHiatus HerniaHigh Density Lipoprotein DecreasedMuscle FatigueFatigue
Abdominal PainDiarrhoeaHigh Density Lipoprotein DecreasedMouth HaemorrhageDyspnoeaPneumonia
Chest PainSensory DisturbanceElectrocardiogram AbnormalEpistaxisCardiac Failure Congestive
Abdominal DistensionMuscular WeaknessDiverticulumMuscle WeaknessErythema

Drug effectiveness by gender :

Flomax is effectiven/a24.14%
(7 of 29 people)
Niacin is effectiven/a52.00%
(13 of 25 people)

Most common drug interactions by gender * :

Escherichia InfectionFlushing
Cardiac Failure CongestivePruritus
Neuropathy PeripheralOedema Peripheral
Therapeutic Agent ToxicityParaesthesia
Staphylococcal InfectionPneumonia
Muscle SpasmsFatigue

Drug effectiveness by age :

Flomax is effectiven/an/an/an/an/a0.00%
(0 of 1 people)
(2 of 8 people)
(5 of 21 people)
Niacin is effectiven/an/an/an/an/a0.00%
(0 of 1 people)
(2 of 7 people)
(11 of 18 people)

Most common drug interactions by age * :

n/an/an/an/an/aChest PainFlushingFlushing
FlushingPruritusCardiac Failure Congestive
Bipolar DisorderFatigueAsthenia
CellulitisFeeling HotOedema Peripheral
Cardiac DisorderBlood Pressure DecreasedPneumonia
ConstipationAtrial FibrillationDyspnoea
HeadacheCarcinoma In Situ Of EyeFatigue

* 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 Flomax and Niacin?

Get connected! Join a related mobile support group:
- support group for people who take Flomax and Niacin
- support group for people who take Flomax
- support group for people who take Niacin

Comments from related studies:

  • From this study (1 year ago):

  • later in the afternoons I feel better


  • From this study (1 year ago):

  • i have not changed any doctor ordered medications , however, due to allergies, I recently bought over the counter Claritin and then zyrtec. Since then, I am getting the tingling in my right hand? Can you advise?


Post a new comment    OR    Read more comments

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Complete drug side effects:

On eHealthMe, Flomax (tamsulosin hydrochloride) is often used to treat enlarged prostate. Niacin (niacin) is often used to treat high blood cholesterol. 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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