Conventionally, yes -- standard Vitamin D3 (cholecalciferol) is lanolin-derived, from the oily secretion found in sheep wool. Lichen-derived D3 is chemically identical cholecalciferol extracted from certain lichen species, making it fully vegan. Halea Life uses lichen D3 in this collection rather than D2 (ergocalciferol), because D3 raises serum 25(OH)D approximately 87% more effectively than D2.*

ALA (alpha-linolenic acid from flaxseed, chia, walnuts) is an Omega-3 precursor, but human conversion of ALA to EPA is approximately 5--10% efficient and conversion to DHA is less than 1%. The cardiovascular and neurological benefits attributed to Omega-3 are primarily from EPA and DHA -- not ALA. Algae-derived Omega-3 provides EPA and DHA directly, bypassing the inefficient conversion pathway. This is the reason vegans benefit from direct DHA+EPA supplementation rather than relying on ALA sources.*

Yes -- Creatine Monohydrate is synthesized from sarcosine and cyanamide through a chemical process unrelated to animal sources. The creatine in supplements has not been animal-derived for decades; it is entirely synthetic. This makes Creatine Monohydrate one of the most vegan-compatible performance supplements available -- while also being the most evidence-backed sports performance compound overall.*

B12 (cobalamin) is the critical one -- it is produced by bacteria and is essentially absent from plant foods. Deficiency develops over years of plant-based eating without supplementation and causes irreversible neurological damage if left untreated. Methylcobalamin is the bioactive form that doesn't require hepatic conversion. Other B vitamins (B6, folate, B1, B2, B3) are more available in plant diets, but B12 supplementation is non-negotiable for long-term vegans.*

Yes -- mushrooms are fungi, not animals, and mushroom extracts are fully vegan. The concern is capsule material: many mushroom products use gelatin capsules. Halea Life Lion's Mane, Reishi, Turkey Tail, Cordyceps, and other functional mushroom extracts all use HPMC vegetable capsules. The fruiting body extracts themselves are produced without animal inputs.*

Plant-based diets contain non-heme iron and zinc, both of which are significantly less bioavailable than the heme forms in animal products due to phytate binding. The Recommended Dietary Allowance for zinc is 50% higher for vegans than for omnivores precisely because of this reduced bioavailability. Zinc Bisglycinate has significantly higher absorption than zinc oxide or sulfate, and vitamin C co-ingestion improves non-heme iron absorption substantially -- both strategies are relevant for plant-based eaters.*