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Review: taking Venlafaxine and Phentermine together

Summary: drug interactions are reported among people who take Venlafaxine and Phentermine together.

This review analyzes the effectiveness and drug interactions between Venlafaxine and Phentermine. It is created by eHealthMe based on reports of 194 people who take the same drugs from FDA and social media, and is updated regularly.


You are not alone: join a support group for people who take Venlafaxine and Phentermine >>>

On Mar, 31, 2015: 194 people who take Venlafaxine Hydrochloride, Phentermine are studied

Venlafaxine Hydrochloride, Phentermine outcomes

Drug combinations in study:
- Venlafaxine Hydrochloride (venlafaxine hydrochloride)
- Phentermine (phentermine hydrochloride)

Drug effectiveness over time :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Venlafaxine Hydrochloride is effective25.00%
(1 of 4 people)
(3 of 6 people)
(1 of 4 people)
(2 of 6 people)
(9 of 9 people)
(5 of 9 people)
(1 of 1 people)
Phentermine is effective22.22%
(2 of 9 people)
(6 of 17 people)
(5 of 5 people)
(0 of 2 people)
(0 of 1 people)

Drug effectiveness by gender :

Venlafaxine Hydrochloride is effective54.05%
(20 of 37 people)
(2 of 2 people)
Phentermine is effective37.50%
(12 of 32 people)
(1 of 2 people)

Drug effectiveness by age :

Venlafaxine Hydrochloride is effectiven/an/an/a60.00%
(3 of 5 people)
(6 of 13 people)
(5 of 14 people)
(7 of 13 people)
(1 of 1 people)
Phentermine is effectiven/an/an/a42.86%
(3 of 7 people)
(2 of 11 people)
(5 of 14 people)
(3 of 11 people)
(0 of 1 people)

Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
VomitingDyskinesiaGranuloma AnnulareRinging In The EarsHeart Rate IncreasedCyanosisn/aDyspnoea Nos
Pulmonary Hypertension PrimaryConvulsions NosMusculoskeletal StiffnessDyskinesiaChest Pressure SensationChest Pain
Exacerbation Of AnxietyMuscle SpasmsRinging In The EarsConvulsions NosBone And Joint PainValvular Heart Disease Nos
Pain In JawDyspnoeaCyanosisEye RollingRaynaud's PhenomenonPulmonary Hypertension Nos
Eye RollingBone And Joint PainRestlessnessMitral Valve Incompetence
Rash PapularChest Pressure SensationSweating IncreasedVomiting
Sweating IncreasedRaynaud's PhenomenonSleep TalkingPalpitations
Sleep TalkingRash PapularFatigue
RestlessnessMusculoskeletal StiffnessCardiomegaly Nos
Chest PainExacerbation Of AnxietyCardiovascular Disorder Nos

Most common drug interactions by gender * :

Dyspnoea NosChest Pain
Chest PainCardiovascular Disorder Nos
Valvular Heart Disease NosInsomnia Nec
Pulmonary Hypertension NosCardiac Failure Nos
Mitral Valve IncompetenceLibido Decreased
FatiguePulmonary Hypertension Nos
PalpitationsDrug Withdrawal Syndrome
VomitingAnxiety Nec
Cardiomegaly NosEpididymitis
Depression NecDyspnoea

Most common drug interactions by age * :

n/an/an/aNauseaChest PainChest PainValvular Heart Disease NosDiabetic Nephropathy
VomitingPulmonary Hypertension NosDrug IneffectiveInsomnia NecNeuropathy Peripheral
Major DepressionDyspnoea NosConfusionThinking Abnormal NecDiabetes Mellitus
HyperhidrosisCardiac ArrestDrug Withdrawal SyndromeAstheniaMuscle Spasms
PainSweating IncreasedDyspnoea NosPulmonary Hypertension NosDyspnoea
InsomniaBlood Cholesterol IncreasedFatigueCardiovascular Disorder NosChest Pain
ParonychiaValvular Heart Disease NosDepressionDyspnoea Nos
Vision BlurredCoughSuicidal IdeationPalpitations
TremorBronchitis Acute NosCryingChest Pain
RashBronchospasm NosNauseaPressure Of Speech

* 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.

Get connected: join our support group of Venlafaxine and Phentermine on

Do you take Venlafaxine and Phentermine?




You are not alone! Join a related support group:
- support group for people who take Phentermine
- support group for people who take Venlafaxine Hydrochloride

Recent related drug studies (Check your drugs):

Complete drug side effects:

On eHealthMe, Venlafaxine Hydrochloride (venlafaxine hydrochloride) is often used to treat depression. Phentermine (phentermine hydrochloride) is often used to treat obesity. 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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