]> 2026-04-12T08:58:44-07:00 PSK 0 en PSK (Polysaccharide Krestin) and other polysaccharides are generally considered safe with a low risk of side effects. However, there may be mild digestive upset. Since it's used as an Over-the-Counter supplement, its toxicity is notably lower than many other cancer treatments. However, each individual's responses can vary, and this does not exclude the possibility of uncommon adverse reactions. 2025-01-18T08:18:08Z 2460693.8459259 PSK