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Tizanidine Hydrochloride vs Phentermine Hydrochloride, a side effect and effectiveness comparison for a female patient aged 45

This is personalized comparison of Tizanidine Hydrochloride vs Phentermine Hydrochloride for a female aged 45. The study is created by eHealthMe based on reports from FDA and social media.

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What are the drugs

Tizanidine hydrochloride (latest outcomes from 1,518 users) has active ingredients of tizanidine hydrochloride. It is often used in muscle spasms.

Phentermine hydrochloride (latest outcomes from 1,733 users) has active ingredients of phentermine hydrochloride. It is often used in obesity.

On Jun, 4, 2014: 5,123 female patients aged 40 who take the same drugs are studied in Tizanidine Hydrochloride vs Phentermine Hydrochloride

Information of patient in study:

GenderAgeReason for the drug

Drugs to compare:

Tizanidine Hydrochloride tizanidine hydrochlorideSandoz
Phentermine Hydrochloride phentermine hydrochlorideTg United Inc

eHealthMe real world results:

For females aged 40 (±5):

Comparison with the specified adverse outcomes:

(outcome and its % of total reports)

Tizanidine Hydrochloride (Sandoz)Phentermine Hydrochloride (Tg United Inc)
Phentermine Hydrochloride
Tizanidine Hydrochloride

Most common side effects:

(click on each outcome to view in-depth analysis, incl. how people recovered)
Tizanidine Hydrochloride (Sandoz)Phentermine Hydrochloride (Tg United Inc)
Nausea (feeling of having an urge to vomit)Dyspnoea Nos (difficult or laboured respiration)
Headache (pain in head)Chest Pain
PainValvular Heart Disease Nos (diseases of the heart valves)
Fatigue (feeling of tiredness)Palpitations (feelings or sensations that your heart is pounding or racing)
Asthenia (weakness)Pulmonary Hypertension Nos (increase in blood pressure in the lung artery)
Condition AggravatedCardiovascular Disorder Nos (heart diseases)
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath)Cardiac Murmur Nos (an heart sound in valve abnormality)
Chest PainMitral Valve Incompetence (inefficient heart valve)
FallTricuspid Valve Incompetence (inefficient heart valve)
AnxietyFatigue (feeling of tiredness)

Most common side effects experienced by people in long term use:

(click on each outcome to view in-depth analysis, incl. how people recovered)
Tizanidine Hydrochloride (Sandoz)Phentermine Hydrochloride (Tg United Inc)
Nausea (feeling of having an urge to vomit)Constipation
Tinnitus (a ringing in the ears)Nausea (feeling of having an urge to vomit)
Hearing LossImpaired Driving Ability
Chest PainFacial Spasm (involuntary muscle contractions face)
DepressionHeadache (pain in head)
Bacterial InfectionDyspnoea (difficult or laboured respiration)
AnxietyEye Swelling
Alanine Aminotransferase IncreasedRaynaud's Phenomenon (discoloration of the fingers, toes, and occasionally other areas)
Weight Gain - UnintentionalFatigue (feeling of tiredness)
Ovarian Cyst (fluid filled sac of the ovary)Flank Pain (a distressing sensation experienced around the lower back and the upper abdomen)

Drug effectiveness:

not at allsomewhatmoderatehighvery high
Tizanidine Hydrochloride1.80%34.23%38.74%21.62%3.60%
Phentermine Hydrochloride3.92%22.30%36.52%27.45%9.80%

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Drug effectiveness in real world:

Alternative drugs:

Side effects in real world:

On eHealthMe, Tizanidine Hydrochloride (tizanidine hydrochloride) is often used to treat muscle spasms. Phentermine Hydrochloride (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:

Recent related drug comparison:

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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