Brain & Focus

  • Krill

    Krill oil, derived from small marine crustaceans, is valued for its omega‑3 content and the antioxidant astaxanthin and is offered mainly as capsules. Research explores its antioxidant, anti‑inflammatory and cardiovascular effects, but responses vary and dosage should be matched to omega‑3 content.

  • Klamath

    Klamath is a blue‑green microalga harvested from Oregon’s Lake Klamath, prized for concentrated nutrients, phycocyanins and phenylethylamine. Used as a whole‑algae supplement in powders, tablets and capsules, it is associated with antioxidant and immune‑supporting properties. Consult a healthcare professional if taking anticoagulants.

  • Kola Nut

    An African seed long chewed to relieve fatigue and enhance alertness, kola nut is now supplied as powdered extract in capsules and tablets. Its dried seed contains caffeine alongside tannins and polyphenols and is noted for stimulant and antioxidant activity. Effects and tolerance vary by individual.

  • Iron

    Essential for oxygen transport and cellular function, iron supports hemoglobin formation and normal energy metabolism. Supplementation is used when intake or stores are insufficient, but effects vary by individual and excess can be harmful. Common side effects include gastrointestinal upset; consult healthcare guidance.

  • Green Tea

    Green tea is a traditional infusion made from Camellia sinensis leaves, rich in catechins and natural caffeine. It is valued for mild stimulation and antioxidant support, with common use in dietary supplements and weight‑management approaches. Individual responses vary and people sensitive to caffeine should take care.

  • Griffonia

    Griffonia simplicifolia seeds are a concentrated natural source of 5‑HTP used traditionally in West and Central Africa and now processed into standardized extracts and supplements for sleep and mood-related support. May help regulate sleep cycles and support mood in some people, but individual responses and risks vary.

  • Guarana

    Guarana seeds from the Amazon are roasted and powdered for use in supplements and beverages to support alertness and short-term cognitive performance. The seeds are rich in caffeine and polyphenols and are traditionally used to counter fatigue. Individual responses and tolerances vary.

  • Green Coffee

    Green Coffee is the unroasted seed of Coffea arabica used in herbal and supplemental preparations for stimulant and metabolic-associated effects. It contains caffeine and higher levels of chlorogenic acid than roasted beans and is studied for alertness, antioxidant activity and modest weight-related effects.

  • Gomphrena

    Gomphrena is a South American medicinal herb used traditionally as a general tonic with antioxidant and adaptogenic reputation. Root, leaf and flower extracts are used in supplements for their antioxidant and anti‑fatigue properties, though effects vary by species and preparation.

  • Ginseng

    Ginseng root is a traditional northeast Asian tonic used to support energy, resilience and vitality, valued for its ginsenosides and antioxidant profile. Individual responses vary and some people may experience side effects or interactions with medications. Consult a healthcare professional before using supplements.

  • Ginkgo Biloba

    Extracts from Ginkgo Biloba leaves are used in standardized supplements worldwide for their antioxidant activity and traditional support for circulation and cognitive function. Typical extract doses range from 120 to 240 mg per day, and responses can vary between individuals.

  • GABA

    GABA is an endogenous amino acid and the brain’s main inhibitory neurotransmitter, associated with relaxation, stress regulation and support for sleep onset. Supplemental GABA is used by some people to promote calm and help with falling asleep, though responses vary. Typical adult doses range from 250–750 mg daily.