| Name | L-Serine |
| Uses | Amino acid used to support nervous system health, cellular function, and cognitive performance. May assist with neurotransmitter synthesis, cellular membrane formation, and overall brain health. Commonly used in wellness IV protocols for cognitive support, neuroprotection, and general cellular health. |
| Route Of Administration | Intravenous (IV) |
| Frequency Of Use | Typically administered once weekly for cognitive and neurological support. In neuro-recovery or performance programs, may be given up to twice weekly for 4 to 6 weeks, followed by reassessment. Long-term use should be reviewed every 8 to 12 weeks. |
| Concentration(s) | Common compounded concentrations range from 50 mg/mL to 100 mg/mL. |
| Maximum Dosage (Day, Wk) (g/mL)/mL | Maximum dose per infusion: 1,000 mg (1 g). Maximum weekly dose: 2,000 mg (2 g). Higher doses are not recommended for elective wellness patients without documented medical justification. |
| Contraindications | Severe renal impairment or dialysis dependency (risk of nitrogenous waste accumulation). Severe hepatic impairment. Known hypersensitivity to L-serine or any component of the formulation. Pregnancy and breastfeeding unless specifically cleared by OB provider. Active seizure disorder or history of neurological hypersensitivity. |
| Possible Side Effects | Nausea, headache, flushing, or mild dizziness during infusion. Injection site irritation. Rare: allergic reactions (rash, itching, hypersensitivity). |
| Compatibility With Other Drugs | Compatible with normal saline and D5W. Should not be mixed directly with calcium-containing solutions. May be combined with other amino acids, vitamins, or antioxidants in comprehensive wellness IVs, but compatibility must always be verified before mixing. |
| Allergies | True allergy to L-serine is rare. Reactions are more likely related to preservatives or stabilizers in compounded formulations. |
| Administration Time | Typical infusion time: 30 to 45 minutes for doses up to 1,000 mg. Slower infusion may improve tolerability in sensitive patients. |
| IV Dosing | For cognitive and neurological support: 500 mg to 1,000 mg IV once weekly. For intensive neuroprotection or cognitive optimization programs: 1,000 mg IV once or twice weekly for 4 to 6 weeks, followed by reassessment. Long-term use requires periodic clinical review. |
| IM/Push | May be given as a slow IV push for doses up to 500 mg over 5 to 10 minutes. Higher doses should be administered via drip for better tolerability. IM administration is not recommended due to local irritation and inconsistent absorption. |
| What To Do If Adverse Reaction Occurs | 1. Stop the infusion immediately. 2. Assess vital signs (blood pressure, heart rate, oxygen saturation). 3. If nausea, dizziness, or flushing occurs, place the patient in a comfortable position and provide oral fluids if tolerated. 4. For allergic reactions (rash, itching, shortness of breath), administer antihistamines and consider epinephrine if severe. 5. If symptoms persist or worsen, arrange for emergency transfer to a higher level of care (call 911 if necessary). |