Ondansetron

Oral disintegrating tablet (8mg)Available in all 50 states

Marketing purposes only. Actual medications, if prescribed, are dispensed by a licensed pharmacy.

other

OndansetronOndansetron

5-HT3 receptor antagonist for nausea and vomiting prevention. Commonly used for GLP-1 agonist-related nausea and post-operative/chemotherapy-induced nausea.

Effective anti-emetic

ODT formulation for convenience

Non-sedating

Rapid onset

No commitment · HSA/FSA eligibleNo commitment · HSA/FSA eligible

How it works

Mechanism of action

Blocks serotonin 5-HT3 receptors in the chemoreceptor trigger zone and vagal afferents, preventing nausea and vomiting signals from reaching the vomiting center.

The baseline panel.

Every Marek client receives this baseline panel before a provider review. Your provider may add additional biomarkers based on your health history, symptoms, and goals, pulling from 1,000+ available markers. See more biomarkers →

Hormone Profile

12 markers

Sex hormones

Total TestosteroneLC/MS
Free TestosteroneEquilibrium Dialysis
Estradiol, Sensitive / UltrasensitiveLC/MS
Sex Hormone Binding Globulin (SHBG)
ProgesteroneLC/MSFemale panel
Prolactin
Luteinizing Hormone (LH)
Follicle-Stimulating Hormone (FSH)
hCG, Total, QuantitativeFemale panel, pre-menopause

Adrenals & neurosteroids

Cortisol
DHEA-S

Growth hormone / IGF-1

Insulin-Like Growth Factor I (IGF-1)

Thyroid Status

3 markers

Thyroid hormones

Thyroid Stimulating Hormone (TSH)
Free T4
Free T3

Heart Health

9 markers

Cardiovascular health

Total Cholesterol
HDL Cholesterol
LDL Cholesterol
LDL:HDL Ratio
VLDL Cholesterol
Triglycerides
Apolipoprotein-B (ApoB)
C-Reactive Protein, High Sensitivity (hsCRP)
Lipoprotein(a) (Lp(a))

Metabolism

3 markers

Insulin sensitivity

Blood Glucose
Fasting Insulin
HbA1c

Organ Function

26 markers

Liver & pancreas

AST
ALT
Bilirubin, Total
γ-Glutamyl Transferase (GGT)

Kidney function

BUN
Creatinine w/ eGFR

Comprehensive Metabolic Panel (CMP)

Glucose
Blood Urea Nitrogen (BUN)
Creatinine
eGFR
BUN/Creatinine Ratio
Sodium
Potassium
Chloride
Carbon Dioxide, Total
Calcium
Protein, Total
Albumin
Globulin, Total
Albumin/Globulin (A/G) Ratio
Alkaline Phosphatase (ALP)
AST
ALT

Prostate health

Prostate-Specific Antigen (PSA)Male panel
Free PSAMale panel
% Free PSAMale panel

Nutrient Status

31 markers

Vitamins & minerals

Vitamin D, 25-OHD (25-Hydroxy)
Magnesium, RBC

Iron status

Iron
Iron Saturation
TIBC
UIBC
Ferritin

Complete Blood Count (CBC)

White Blood Count (WBC)
Red Blood Count (RBC)
Hemoglobin (Hgb)
Hematocrit (HCT)
MCV
MCH
MCHC
Red Cell Distribution Width (RDW)
Platelets
Neutrophils
Neutrophils (Absolute)
Lymphocytes
Lymphocytes (Absolute)
Neutrophil/Lymphocyte Ratio
Monocytes
Monocytes (Absolute)
Eosinophils
Eosinophils (Absolute)
Basophils
Basophils (Absolute)
Immature Cells
Immature Granulocytes
Immature Granulocytes (Absolute)
NRBC, w/ Reflex for Immature Cells

Safety profile

Monitoring & safety information.

Commonly reported side effects

Headache
Constipation
Fatigue

Less common but serious risks

QT prolongation (dose-dependent)
Serotonin syndrome (with other serotonergic agents)

Generally not appropriate for

Congenital long QT syndrome
Concurrent apomorphine

Typical monitoring

ECG if cardiac risk
QTc interval

FAQ

Quick answers.

5-HT3 receptor antagonist for nausea and vomiting prevention. Commonly used for GLP-1 agonist-related nausea and post-operative/chemotherapy-induced nausea.

Effective anti-emetic. ODT formulation for convenience. Non-sedating. Rapid onset.

Common side effects include: headache, constipation, fatigue. Most side effects are dose-dependent and may resolve with continued use or dose adjustment.

View all FAQs

See all FAQs

5-HT3 receptor antagonist for nausea and vomiting prevention. Commonly used for GLP-1 agonist-related nausea and post-operative/chemotherapy-induced nausea.

Treatments are dependent on licensed clinical prescription. Client costs vary based on individual labs and panel in treatments and services.