Improving Iron Levels in Female Endurance, Intermittent, and Power/Strength Athletes Aged 16-35

Inclusion Criteria: * Biologically female athlete * Age 16-35 * At least one year past the age of menarche * Complete and pass the Get Active Questionnaire (GAQ) * Suboptimal ferritin levels (≤50 mcg/L) * Provide informed consent to participate in study * Activity level based on Participant Classification Framework (McKay et al., 2022) * Tier 3: Highly Trained / National Level * Tier 4: Elite / International Level * Energy availability \>30 kcal/kg LBM * Have access to a smartphone, tablet, or computer * Able to swallow a capsule sized 25mm length and 8mm width (i.e. large dose omega 3 pill) Exclusion Criteria: * Non-English speaking * Anemic (hemoglobin \<120g/L) * Regular prebiotic (fiber) or probiotic use within 4 weeks of study enrollment * Current laxative use * Are a smoker or use tobacco products * Consume \>21 units of alcohol per week * Have donated blood in the previous 3 months * Have a BMI \<16 but \>30kg/m2 * Are dieting for weight loss or are following a low carbohydrate diet * Have participated in another clinical trial within the 30 days preceding study enrollment. * Known allergy of hypersensitivity to any ingredient, including non-medicinal ingredients, such as iron, yeast, cellulose, or maltodextrin * Are taking medications known to affect cardiovascular or metabolic responses to exercise such as beta-blockers, anti-coagulants etc. as assessed by the Principal Investigator * Known history of thalassemia or thalassemia trait * Known inherited bleedin…