Cystine

• Support for immune deficiency.

SUGGESTED DOSAGE One dropper under tongue two times daily. Acute symptoms ½ dropper under tongue every 30 minutes for two hours.

Use only if cap seal is unbroken. As with drugs if you are pregnant or nursing a baby seek professional advice before using this product. Keep this and all medication out of the reach of children. To be used according to standard homeopathic indications.

1. 1Transplant Rejection267%
2. 2Abdominal Discomfort133%
3. 3Abdominal Pain133%
4. 4Anhedonia133%
5. 5Aortic Valve Incompetence133%
6. 6Aortic Valve Sclerosis133%
7. 7Asthenia133%
8. 8Atrial Fibrillation133%
9. 9Cardiac Aneurysm133%
10. 10Cardiac Murmur133%
11. 11Cardiomyopathy133%
12. 12Dyskinesia133%
13. 13Dyspnoea Exertional133%
14. 14Economic Problem133%
15. 15Electrocardiogram St-t Segment Depression133%

Recent PubMed references pinned to Cystine as a MeSH major topic. Citations link to pubmed.ncbi.nlm.nih.gov.

• Cystine: A Key Protective Factor Against Childhood Hypo-HDL Cholesterolemia and Dyslipidemia-A Matched Case-Control Study.
  Nutrients · 2026 · Yu L, Yue Q, Zhu Q, et al.
  PMID 42196947DOI 10.3390/nu18101488
• [Selenocystine inhibits colon cancer cell growth by promoting reactive oxygen species generation to trigger oxidative damage].
  Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2026 · Song Q, Miao Y, Feng X, et al.
  PMID 41887693DOI 10.12122/j.issn.1673-4254.2026.03.07
• L-Ergothioneine Attenuates Nephrolithiasis by Modulating Redox Signaling and Mitochondrial Function in Cystine and Calcium Oxalate Models.
  Antioxidants & redox signaling · 2026 · Mayayo-Vallverdú C, Vecino-Pérez M, Prat E, et al.
  PMID 41814506DOI 10.1177/15230864261431276
• Membrane-translocated SO₂/₃-PRDX3 disrupts cystine uptake and GPX4 activity: A pivotal mechanism of boron-induced renal ferroptosis in broiler.
  Ecotoxicology and environmental safety · 2026 · Li Y, Li Y, Guo M, et al.
  PMID 41775182DOI 10.1016/j.ecoenv.2026.119969
• A Refined Method for Micro-Scale Blood Cystine Measurement in Preclinical Cystinosis Models.
  International journal of molecular sciences · 2026 · De Leo E, Cairoli S, Rega LR, et al.
  PMID 41751789DOI 10.3390/ijms27041654
• Synergistic Effects in a Homochiral Metal-Organic Framework Enable Enhanced Enantiomeric Discrimination and Ultrasensitive Detection of Disulfide-Containing Biomarkers.
  ACS sensors · 2026 · Dong ZY, Xi FG, Li RX, et al.
  PMID 41747096DOI 10.1021/acssensors.5c04436
• Cystine Promotes the Development of Hair Follicle in Rabbits by Regulating Wnt Signalling Pathway.
  Journal of animal physiology and animal nutrition · 2026 · Liu C, Liu X, Li L, et al.
  PMID 41739955DOI 10.1111/jpn.70050
• A metal-free cascade nanoreactor reprograms the cystine-glutathione axis for disulfidptosis-pyroptosis therapy.
  Acta biomaterialia · 2026 · Yang N, Cao C, Li Y, et al.
  PMID 41662918DOI 10.1016/j.actbio.2026.02.011

The 10 most recently updated of 31 ClinicalTrials.gov registrations naming Cystine as an intervention. Registration is not evidence of efficacy or safety — reference crosswalk only.

• Use of Cysteamine in the Treatment of Cystinosis
  Recruiting · Observational · 330 enrolled · National Human Genome Research Institute (NHGRI)
  NCT00359684updated 2026-05-29
• Efficacy and Safety of Millet Seed Extract in Telogen Effluvium Treatment
  Completed · Interventional · 60 enrolled · Kasr El Aini Hospital
  NCT07348120updated 2026-05-05
• Lipoic Acid Supplement for Cystine Stone
  Completed · Phase 2 · Interventional · 50 enrolled · Thomas Chi, MD
  NCT02910531updated 2026-04-15
• Optimizing Treatment of Co-occurring Smoking and Unhealthy Alcohol Use Among PWH in Nairobi, Kenya
  Not yet recruiting · Phase 3 · Interventional · 300 enrolled · University of Chicago
  NCT06790342updated 2025-12-11
• The Effect of Sodium-glucose Cotransporter (SGLT) 2 Inhibitors on Cystine Stone Formation: A Preliminary Study
  Completed · Phase 2 · Interventional · 10 enrolled · University of California, San Francisco
  NCT04818034updated 2025-10-16
• Prandial Metabolic Phenotype in Adults
  Recruiting · Interventional · 50 enrolled · Texas A&M University
  NCT05400733updated 2025-10-01
• Mitochondrial Capacity Boost in ALS (MICABO-ALS) Trial
  Recruiting · Phase 2 · Interventional · 60 enrolled · Dallas VA Medical Center
  NCT04244630updated 2025-08-24
• Rare Kidney Stone Consortium Patient Registry
  Recruiting · Observational · 730 enrolled · Mayo Clinic
  NCT00588562updated 2025-07-04
• The Impact of a Nutritional Supplement (Impryl®) on Male Fertility
  Active not recruiting · Interventional · 1,200 enrolled · Radboud University Medical Center
  NCT03337360updated 2025-04-04
• Six-Month Single-Blind, Placebo-Controlled Study of a Dietary Supplement Supplement on Hair Growth in 45 Volunteers
  Recruiting · Interventional · 45 enrolled · Industrial Farmacéutica Cantabria, S.A.
  NCT06841458updated 2025-02-24

Frequently asked questions

What is Cystine used for?

According to FDA labeling, Cystine carries indications including: Support for immune deficiency.. This is a reference summary of labeled uses, not medical advice or a treatment recommendation.