L-lysinate is a supplement and medicine ingredient: the amino acid lysine paired with a mineral or a medicine, separating after oral intake into lysine. Lysine is used for cold sores, calcium uptake and stress. Evidence is modest and low certainty; cold-sore results conflict. The pairing mainly helps some pain medications enter the blood sooner. Risks look low at moderate amounts; mineral lysinates can add several grams of lysine daily. (Full Review)

Protocol

Herpes prevention dose

1–3 g/day

3 g/day in the positive trial; 1,248 mg/day effective but 624 mg/day not

Form

L-lysine hydrochloride

Used in trials; about 80% lysine by weight; lysine from mineral chelates and drug salts counts toward the daily total

Time of day

With meals, divided doses

Divided doses match the short blood peak (about 2 hours); no time of day has proven superior

Time to effect

Herpes recurrences

3–12 months

Length of herpes prevention trials; any benefit lasts only while taking it

Anxiety

1 week

Changes appeared after one week of lysine plus arginine

Blood-sugar rise

Same meal

Acute blunting; lasting benefit unproven

Benefits

Low: Fewer herpes simplex recurrences; fewer canker sores; higher calcium absorption; lower anxiety and stress response; fewer sick days in lysine-poor diets; smaller blood-sugar rise after meals; reduced hair shedding with iron; cardiovascular protection via lipoprotein(a); small gain in muscle strength; faster drug absorption from lysinate salts; add-on relief in schizophrenia

Speculative: Less protein glycation; kidney and blood-pressure protection; gentler stomach effects of lysine drug salts

Contraindications

Hyperlysinemia or hyperlysinuria

Pyridoxine-dependent epilepsy (ALDH7A1 deficiency)

Glutaric aciduria type I

Kidney or liver impairment

History of kidney stones or gallstones

Taking calcium supplements (relative)

Pregnancy

Key Interactions

Calcium-sparing drugs (thiazide diuretics such as hydrochlorothiazide; monitor, theoretical)

Aminoglycoside antibiotics (gentamicin, tobramycin, amikacin; caution, theoretical)

Over-the-counter analgesics formulated as lysinate salts (ibuprofen lysinate, ketoprofen lysine salt; monitor)

Oral anticoagulants (warfarin, acenocoumarol; monitor, theoretical)

Glucose-lowering drugs (metformin, glibenclamide, insulin; monitor, theoretical)

Arginine and citrulline supplements (caution, theoretical, for herpes use)

Supplements with additive effects (vitamin D; berberine, chromium; other magnesium, calcium or zinc products; monitor, theoretical)

Low-protein diets (monitor, theoretical)

Risk & Side Effects

Low: Digestive upset at high doses; kidney tubule injury; side effects of the partner mineral or drug

Speculative: Higher LDL cholesterol; gallbladder strain; rise in a diabetes-risk marker; excess calcium with calcium products; reduced arginine and nitric oxide

Monitoring

Marker	Target	Why
Serum creatinine and eGFR	Creatinine 0.6–1.3 mg/dL; eGFR 60 mL/min/1.73 m² or above	Safety check: a rise stops use
Urinalysis (glucose, protein)	Negative for glucose and protein	Safety check: new positives stop use
Serum calcium	8.5–10.2 mg/dL	Safety check when stacking calcium: high values stop use
LDL cholesterol	No established target for this purpose; track change from own baseline	Safety check: a sustained rise reduces dose
Lipoprotein(a)	Below 30 mg/dL (75 nmol/L)	Marker the lipoprotein(a) protocol aims to change

Cadence: Baseline before regular use; creatinine, urinalysis and calcium at 3 months, then every 6–12 months while supplemental lysine exceeds 3 g/day; LDL at 3 months; lipoprotein(a) at 3–6 months when it is the target

Qualitative Assessment

Frequency, severity and healing time of herpes outbreaks, kept in a simple diary
Digestive comfort (nausea, cramps, stool changes) after dose increases
Perceived anxiety and stress resilience
Speed of pain relief when lysinate analgesics are used

L-Lysinate for Health & Longevity

Protocol

Benefits

Risk & Side Effects

Monitoring

Qualitative Assessment