Cephalexin and Plan b drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Cephalexin (cephalexin) and Plan b (levonorgestrel). Common drug interactions include cholelithiasis among females.

The phase IV clinical study analyzes what interactions people have when they take Cephalexin and Plan b. It is created by eHealthMe based on reports of 15 people who take the same drugs from the FDA, and is updated regularly.

What is Cephalexin?

Cephalexin has active ingredients of cephalexin. It is often used in infection. eHealthMe is studying from 30,580 Cephalexin users. Check the latest studies of Cephalexin.

What is Plan b?

Plan b has active ingredients of levonorgestrel. It is often used in birth control. eHealthMe is studying from 38,623 Plan b users. Check the latest studies of Plan b.

On Jul, 15, 2026

15 people who take Cephalexin and Plan b together, and have interactions are studied.

Cephalexin and Plan b drug interactions.

What are the common drug interactions of Cephalexin and Plan B, by gender? *:

female:

Cholelithiasis (the presence or formation of gallstones in the gallbladder or bile ducts)
Drug ineffective
Migraine (headache)
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Gallbladder disorder
Menstruation delayed (late menstruation cycle)
Nephrolithiasis (calculi in the kidneys)
Pain
Pelvic pain
Acne (skin problems that cause pimples)

male:

n/a

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

0-1:

n/a

2-9:

n/a

10-19:

Abortion spontaneous (naturally occurring miscarriage)
Cholecystitis (infection of gallbladder)
Gallbladder disorder
Nephrolithiasis (calculi in the kidneys)

20-29:

Cholecystitis chronic (long lasting infection of gallbladder)
Abortion spontaneous (naturally occurring miscarriage)
Aggression
Agitation (state of anxiety or nervous excitement)
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Anger
Anxiety
Bipolar disorder (mood disorder)
Borderline personality disorder
Depression

30-39:

Abdominal pain lower
Abortion spontaneous (naturally occurring miscarriage)
Breast pain
Cough
Diarrhoea
Drug ineffective
Dysphagia (a condition in which swallowing is difficult or painful)
Epistaxis (bleed from the nose)
Human chorionic gonadotropin decreased
Ingrowing nail

40-49:

n/a

50-59:

Adverse event
Blood pressure increased
Constipation
Dysgeusia (disorder of the sense of taste)
Dyspepsia (indigestion)
Menopause (end of monthly cycles in women)
Menstruation irregular
Pain
Cholelithiasis (the presence or formation of gallstones in the gallbladder or bile ducts)
Drug ineffective

60+:

n/a

What are the existing conditions these people have? *

Acne (skin problems that cause pimples): 4 people, 26.67%
Menstruation Irregular: 3 people, 20.00%
Skin Disorder (skin disease): 3 people, 20.00%
Dyspnea (difficult or laboured breathing): 2 people, 13.33%
Gastric Disorder (disease of stomach): 2 people, 13.33%
Hypersensitivity: 2 people, 13.33%
Insomnia (sleeplessness): 2 people, 13.33%
Urticaria (rash of round, red welts on the skin that itch intensely): 2 people, 13.33%
Pain: 2 people, 13.33%
Quit Smoking: 2 people, 13.33%

* Approximation only. Some reports may have incomplete information.

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