Arterosil HP 900 mg by Calroy Health Sciences

If you’re looking for an endothelial glycocalyx supplement because your clinician flagged endothelial function or vascular risk, this is the niche it serves. The endothelial glycocalyx is the gel-like sugar coat that lines blood vessels and helps regulate blood flow. It’s most relevant if you have risk factors like high blood pressure, diabetes or prediabetes, elevated hs-CRP (an inflammation marker), low nitric oxide–related symptoms like cold hands or erectile issues, or if your training loads are high and you want vascular recovery. Use it as an add-on to statins, blood pressure meds, and lifestyle, not a replacement.

This formula centers on seaweed-derived rhamnan sulfate, a sulfated polysaccharide that resembles parts of the natural endothelial glycocalyx. The glycocalyx acts as a barrier that limits LDL particles (the form your liver packages fat into for transport) from entering the vessel wall and as a sensor that triggers nitric oxide (the gas that relaxes arteries). Early human studies on rhamnan sulfate blends show improvements in noninvasive endothelial tests, often within 4 to 12 weeks. The proposed actions are shielding the glycocalyx from oxidative damage and providing building blocks for renewal, which can translate to smoother blood flow and better shear sensing.

Take two capsules daily with meals, ideally one in the morning and one in the evening for steady exposure. Food helps tolerance of seaweed concentrates. Stick with a daily routine for at least 8 to 12 weeks before judging effect; endothelial measures change gradually. If you track labs, pair use with hs-CRP and standard lipids, and consider repeating an endothelial test your clinician uses, such as flow‑mediated dilation (an ultrasound measure of artery widening).

Seaweed-derived sulfated polysaccharides can have mild blood-thinning effects. If you take anticoagulants or antiplatelets like warfarin, apixaban, rivaroxaban, clopidogrel, or aspirin, involve your clinician and monitor for bruising or bleeding. Pause before surgery as directed. Seaweed concentrates may contain trace iodine; those with thyroid disease requiring tight iodine control should confirm compatibility. Safety in pregnancy and nursing isn’t established, so avoid unless your obstetric clinician advises otherwise. For shellfish allergy specifically, this plant-based extract is not shellfish, but verify the facility’s allergen practices if you’re highly sensitive.