Not medical advice. Sylva indexes traditional, fringe, and emerging remedies — including ideas mainstream medicine has rejected. Talk to a clinician before changing any treatment.

The library

28 remedies, honestly labeled.

Every entry is tagged by tier of evidence — from controlled trials to folk tradition. Filter by ailment or search by name.

Clinical evidence

Intravenous Vitamin C

Linus Pauling, 1970s

Pharmacological doses of vitamin C delivered intravenously produce hydrogen peroxide selectively toxic to tumor cells. Phase I/II trials show benefit alongside chemotherapy.

CancerInflammation
Clinical evidence

Curcumin

Indian Ayurveda

The yellow polyphenol of turmeric. Hundreds of trials show anti-inflammatory effects rivaling NSAIDs for osteoarthritis, with emerging anticancer signal.

InflammationArthritisCancerDepression
Clinical evidence

Prolonged Fasting

Universal traditional practice

48–120 hour fasts trigger autophagy and stem-cell regeneration. Valter Longo's lab shows fasting-mimicking diets reduce chemotherapy toxicity and may slow tumor growth.

CancerDiabetesInflammationCognitive decline
Clinical evidence

Boswellia (Frankincense)

Ayurveda & ancient Egyptian medicine

Boswellic acids inhibit 5-LOX, the inflammatory pathway NSAIDs miss. Trials show meaningful pain and stiffness reduction in osteoarthritis and ulcerative colitis.

ArthritisInflammationCancer
Preliminary research

Black Seed Oil

Middle Eastern & Unani medicine — 'cures everything but death'

Thymoquinone-rich oil studied for diabetes, hypertension, asthma, and a growing list of cancers. Hadith literature claims it 'cures everything but death.'

InflammationDiabetesCancerSkin conditions
Preliminary research

Low-Dose Naltrexone (LDN)

Bernard Bihari, NYC, 1980s

An opioid antagonist at 1/10th the addiction-treatment dose. Off-label use spans Crohn's, MS, fibromyalgia, and adjuvant cancer care.

CancerInflammationDepression
Preliminary research

Hyperbaric Oxygen Therapy

Naval diving medicine, 1930s

Pressurized 100% oxygen forces oxygen into hypoxic tissues. Approved for wounds and decompression sickness; off-label use spans long-COVID, brain injury, and tumor sensitization.

CancerCognitive declineInflammation
Clinical evidence

High-Dose Vitamin D3 + K2

Sunlight; modern megadosing — Cicero Coimbra, Brazil

Maintaining serum 25(OH)D above 50 ng/ml is associated with 25–40% lower cancer incidence. The Coimbra protocol uses much higher doses for autoimmune disease.

CancerInflammationDepressionHeart disease
Traditional / folk

Medical Ozone Therapy

European integrative medicine, post-WWI

Blood is drawn, mixed with ozone gas, and reinfused. Practitioners claim improved oxygenation and immune modulation. Banned in U.S. clinical practice; routine in Germany, Italy, Cuba.

CancerInflammation
Clinical evidence

Sulforaphane (Broccoli Sprouts)

Johns Hopkins — Paul Talalay, 1992

The most potent natural Nrf2 activator known. 3-day-old broccoli sprouts contain 20–50× more glucoraphanin than mature broccoli. Trials cover prostate cancer, autism, and air-pollution detox.

CancerCognitive declineInflammation