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

Summary:

Drug interactions are reported among people who take Keflex (cephalexin) and Phentermine (phentermine hydrochloride). Common drug interactions include abdominal hernia among females and dyspnoea among males.

The phase IV clinical study analyzes what interactions people have when they take Keflex and Phentermine. It is created by eHealthMe based on reports of 44 people who take the same drugs from the FDA, and is updated regularly.

What is Keflex?

Keflex has active ingredients of cephalexin. It is often used in infection. eHealthMe is studying from 15,844 Keflex users. Check the latest studies of Keflex.

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.

On Jul, 26, 2026

44 people who take Keflex and Phentermine together, and have interactions are studied.

Keflex and Phentermine drug interactions.

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

female:

Abdominal hernia
Abdominal neoplasm (cancer of the stomach)
Abortion spontaneous (naturally occurring miscarriage)
Acinetobacter infection (infection by group of bacteria commonly found in soil and water)
Acute respiratory distress syndrome
Adnexa uteri pain
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Ankle fracture
Anxiety
Aortic valve incompetence

male:

Dyspnoea (difficult or laboured respiration)
Fall
Nephrolithiasis (calculi in the kidneys)
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Somnolence (a state of near-sleep, a strong desire for sleep)
Distress
Injection site infection
Oedema lower limb (fluid collection in tissue of lower leg)
Pain
Pulmonary embolism (blockage of the main artery of the lung)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Dyspnoea (difficult or laboured respiration)
Acute pulmonary oedema (sudden deposit of fluid in the lung))
Asthma
Cholelithiasis (the presence or formation of gallstones in the gallbladder or bile ducts)
Depression
Drug toxicity
Fatigue (feeling of tiredness)
Adnexa uteri pain
Arthralgia (joint pain)
Asthenia (weakness)

30-39:

Abasia (inability to walk)
Ankle fracture
Arrhythmia (irregular heartbeat)
Breast calcifications (deposits of calcium that can be seen on a mammogram of the breast)
Breast cancer in situ
Breast cyst
Breast fibrosis (the thickening and scarring of connective tissue, usually as a result of injury in breast)
Breast inflammation
Breast mass
Breast oedema (build-up of fluid in the breast tissue)

40-49:

Cardiac murmur (an heart sound in valve abnormality)
Hypoxia (low oxygen in tissues)
Pulmonary hypertension (increase in blood pressure in the lung artery)
Chronic kidney disease
Renal failure (kidney dysfunction)
Angina pectoris (chest pain due to ischemia of the heart muscle)
Arrhythmia (irregular heartbeat)
Back pain
Bradycardia (abnormally slow heart action)
Bronchospasm (spasm of bronchial smooth muscle producing narrowing of the bronchi)

50-59:

Cardiac failure
Chronic kidney disease
Renal failure (kidney dysfunction)
Thrombocytopenia (decrease of platelets in blood)
Valvular heart disease (diseases of the heart valves)

60+:

Blood glucose decreased
Blood glucose increased
Drug ineffective
Injection site pain

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 11 people, 25.00%
Depression: 7 people, 15.91%
Pain: 6 people, 13.64%
Insomnia (sleeplessness): 5 people, 11.36%
Vaginal Bleeding Between Periods: 4 people, 9.09%
Rashes (redness): 4 people, 9.09%
High Blood Pressure: 4 people, 9.09%
Fungal Infection: 4 people, 9.09%
Fluid Retention (an abnormal accumulation of fluid in the blood): 4 people, 9.09%
Disseminated Intravascular Coagulation (systemic activation of blood coagulation): 4 people, 9.09%

* Approximation only. Some reports may have incomplete information.

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