Phentermine and Daypro drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Phentermine (phentermine hydrochloride) and Daypro (oxaprozin). Common drug interactions include pharyngitis among females and dyspnoea among males.

The phase IV clinical study analyzes what interactions people have when they take Phentermine and Daypro. It is created by eHealthMe based on reports of 30 people who take the same drugs from the FDA, and is updated regularly.

What is Phentermine?

Phentermine has active ingredients of phentermine hydrochloride. It is often used in weight loss. eHealthMe is studying from 19,870 Phentermine users. Check the latest studies of Phentermine.

What is Daypro?

Daypro has active ingredients of oxaprozin. It is often used in osteoarthritis. eHealthMe is studying from 2,883 Daypro users. Check the latest studies of Daypro.

On Aug, 05, 2026

30 people who take Phentermine and Daypro together, and have interactions are studied.

Phentermine and Daypro drug interactions.

What are the common drug interactions of Phentermine and Daypro, by gender? *:

female:

Pharyngitis (inflammation of the pharynx, causing a sore throat)
Psychotic disorder
Renal failure (kidney dysfunction)
Renal impairment (severely reduced kidney function)
Rhinitis (a medical term for irritation and inflammation of the mucous membrane inside the nose)
Speech disorder
Tricuspid valve disease (disease of heart valve)
Weight decreased
Word salad
Chest pain

male:

Dyspnoea (difficult or laboured respiration)
Alopecia (absence of hair from areas of the body)
Depression
Drug maladministration
Feeling jittery
Gastrointestinal haemorrhage (bleeding gastrointestinal tract)
Headache (pain in head)
Neurotoxicity (when the exposure to natural or artificial toxic substances, which are called neurotoxins, alters the normal activity of the nervous system)
Oedema lower limb (fluid collection in tissue of lower leg)
Orthopnoea (shortness of breath (dyspnea) when lying down)

What are the common drug interactions of Phentermine and Daypro, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Chest pain
Dyspnoea (difficult or laboured respiration)
Abortion early (terminate pregnancy during its earliest stages, between 5 and 10 weeks)
Depression
Device dislocation
Drug ineffective
Emotional distress
Injury

30-39:

Cardiovascular disorder (heart diseases)
Confusion
Insomnia (sleeplessness)
Irritability
Thinking abnormal
Asthma
Chest pain
Cough
Crying
Depression

40-49:

Chest pain
Dyspnoea (difficult or laboured respiration)
Tachycardia (a heart rate that exceeds the range of 100 beats/min)
Alopecia (absence of hair from areas of the body)
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Anxiety
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Blood pressure increased
Cardiomegaly (increased size of heart than normal)
Cardiovascular disorder (heart diseases)

50-59:

Alopecia (absence of hair from areas of the body)
Angina pectoris (chest pain due to ischemia of the heart muscle)
Atrial fibrillation (fibrillation of the muscles of the atria of the heart)
Cardiac murmur (an heart sound in valve abnormality)
Chronic kidney disease
Diarrhoea
Hyperparathyroidism secondary (an abnormally high concentration of parathyroid hormone in the blood, resulting in weakening of the bones through loss of calcium-secondary)
Nephrogenic anaemia (anaemia due to kidney disease)
Nephropathy (damage to or disease of a kidney)
Renal failure (kidney dysfunction)

60+:

Chronic kidney disease
Gastrooesophageal reflux disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)
Renal injury (kidney injury)
Renal failure (kidney dysfunction)

What are the existing conditions these people have? *

Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 3 people, 10.00%
Infection: 3 people, 10.00%
High Blood Pressure: 3 people, 10.00%
Diabetes: 3 people, 10.00%
Diarrhea: 2 people, 6.67%
Appetite - Decreased (decreased appetite occurs when you have a reduced desire to eat): 2 people, 6.67%
Arthritis (form of joint disorder that involves inflammation of one or more joints): 2 people, 6.67%
Cardiac Failure Congestive: 2 people, 6.67%
Constipation: 2 people, 6.67%
Cough: 2 people, 6.67%

* Approximation only. Some reports may have incomplete information.

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