MODERATE — Monitor Closely
Sea Moss and Warfarin — Unpredictable Anticoagulant Effects
Evidence level: LIMITED
Sea Moss contains a substance (carrageenan) that can thin the blood, similar to heparin. When combined with Warfarin, this may increase bleeding risk. However, Sea Moss also contains vitamin K which works in the opposite direction. The unpredictable net effect makes this combination risky.
Sea Moss contains carrageenan, a sulfated polysaccharide with anticoagulant properties structurally similar to heparin. Combined with Warfarin, additive anticoagulant effect may increase bleeding risk. Sea Moss also contains vitamin K which could paradoxically decrease Warfarin efficacy.
If on Warfarin, either avoid Sea Moss entirely or maintain a strictly consistent daily amount. Inform your anticoagulation clinic. Request more frequent INR monitoring when starting or changing Sea Moss intake.
Separate by 2+ hours from Warfarin to minimize absorption interference. However, the systemic effects are not timing-dependent.
Higher risk for: elderly patients, those with liver disease, history of GI bleeding, concurrent use of multiple blood thinners, recent surgery, vitamin K intake changes, alcohol use, or low body weight.
Unusual bruising, nosebleeds, blood in urine or stool, prolonged bleeding from cuts.
Inform your anticoagulation clinic about Sea Moss use. Discuss carrageenan anticoagulant properties and vitamin K content. Request frequent INR checks.
Blood thinners have narrow safety margins. Instead of Sea Moss, consider safer options: CoQ10 (with INR monitoring), vitamin D3, or probiotics — these have minimal anticoagulant interactions. Always inform your anticoagulation clinic about any supplements.
Sea Moss contains a substance (carrageenan) that can thin the blood, similar to heparin. When combined with Warfarin, this may increase bleeding risk. However, Sea Moss also contains vitamin K which works in the opposite direction. The unpredictable net effect makes this combination risky.
Separate by 2+ hours from Warfarin to minimize absorption interference. However, the systemic effects are not timing-dependent.
Unusual bruising, nosebleeds, blood in urine or stool, prolonged bleeding from cuts.
Blood thinners have narrow safety margins. Instead of Sea Moss, consider safer options: CoQ10 (with INR monitoring), vitamin D3, or probiotics — these have minimal anticoagulant interactions. Always inform your anticoagulation clinic about any supplements.
Inform your anticoagulation clinic about Sea Moss use. Discuss carrageenan anticoagulant properties and vitamin K content. Request frequent INR checks.
Or browse the full interaction database (121,000+ pairs).