Bactrim and Lemtrada drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Bactrim (sulfamethoxazole; trimethoprim) and Lemtrada (alemtuzumab). Common drug interactions include albumin urine present among females and oropharyngeal pain among males.

The phase IV clinical study analyzes what interactions people have when they take Bactrim and Lemtrada. It is created by eHealthMe based on reports of 42 people who take the same drugs from the FDA, and is updated regularly.

What is Bactrim?

Bactrim has active ingredients of sulfamethoxazole; trimethoprim. It is often used in urinary tract infection. eHealthMe is studying from 89,117 Bactrim users. Check the latest studies of Bactrim.

What is Lemtrada?

Lemtrada has active ingredients of alemtuzumab. eHealthMe is studying from 8,317 Lemtrada users. Check the latest studies of Lemtrada.

On Jul, 26, 2026

42 people who take Bactrim and Lemtrada together, and have interactions are studied.

What are the common drug interactions of Bactrim and Lemtrada, by gender? *:

female:

Albumin urine present
Alpha 1 globulin decreased
Arthralgia (joint pain)
Aspartate aminotransferase decreased
Blood alkaline phosphatase decreased
Blood bicarbonate decreased
Blood calcium decreased
Blood creatine phosphokinase decreased
Blood phosphorus increased
Blood uric acid increased

male:

Oropharyngeal pain
Pyrexia (fever)
Fatigue (feeling of tiredness)
Asthenia (weakness)
Gait disturbance
Insomnia (sleeplessness)
Nasopharyngitis (inflammation of the nasopharynx)
Platelet count decreased
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Atrial fibrillation (fibrillation of the muscles of the atria of the heart)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Influenza like illness
Lymphopenia (an abnormally low level of lymphocytes in the blood)
Monocytopenia (a deficiency of monocytes)
Bone marrow failure
Dyspnoea (difficult or laboured respiration)
Headache (pain in head)
Hypersomnia (excessive daytime sleepiness (eds))
Leukopenia (less number of white blood cells in blood)
Melanocytic naevus (a type of lesion that contains nevus cells (a type of melanocyte))
Mobility decreased (ability to move is reduced)

30-39:

Chest discomfort
Headache (pain in head)
Dyspnoea (difficult or laboured respiration)
Heart rate increased
Nausea (feeling of having an urge to vomit)
Somnolence (a state of near-sleep, a strong desire for sleep)
Feeling cold
Feeling hot
Flushing (the warm, red condition of human skin)
Hypotension (abnormally low blood pressure)

40-49:

Lymphocyte percentage decreased
Neutrophil percentage increased
Urinary sediment present
White blood cells urine positive
Albumin urine present
Alpha 1 globulin decreased
Aspartate aminotransferase decreased
Blood alkaline phosphatase decreased
Blood bicarbonate decreased
Blood calcium decreased

50-59:

Contusion (a type of hematoma of tissue in which capillaries)
Gingival bleeding (bleeding gums)
Immune thrombocytopenic purpura (destruction of blood platelets due to the presence of antiplatelet auto antibodies)
Oropharyngeal pain
Petechiae (a small red or purple spot caused by bleeding into the skin)
Rash macular (small, flat red spots)
Skin haemorrhage (bleeding into skin)
Thrombosis (formation of a blood clot inside a blood vessel)
Tubulointerstitial nephritis (a form of nephritis affecting the interstitium of the kidneys surrounding the tubules)
Somnolence (a state of near-sleep, a strong desire for sleep)

60+:

Gait disturbance
Insomnia (sleeplessness)
Deafness unilateral
Decreased appetite
Diarrhoea
Drug-induced liver injury (diseases of the liver that are caused by physician-prescribed medications)
Dysphagia (a condition in which swallowing is difficult or painful)
Dyspnoea (difficult or laboured respiration)
Ear infection
Fall

What are the existing conditions these people have? *

Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 32 people, 76.19%
Relapsing-Remitting Multiple Sclerosis (reoccurrence of an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged): 8 people, 19.05%
Vitamin D Decreased: 4 people, 9.52%
Muscle Spasticity (tight or stiff muscles and an inability to control those muscles): 4 people, 9.52%
Muscle Spasms (muscle contraction): 4 people, 9.52%
Interstitial Nephritis (inflammation of the kidney): 4 people, 9.52%
Hypersensitivity: 4 people, 9.52%
High Blood Cholesterol: 4 people, 9.52%
Folate Deficiency (lack of folic acid): 4 people, 9.52%

* Approximation only. Some reports may have incomplete information.

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