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Iron plays a similar role, as its deficiency is often linked to anemia-related hair loss
However, a 2025 review noted only 3 RCTs, calling for larger trials (Nguyen et al., 2025)
Available Sizes & Weekly Preload Each Retatrutide auto-injection cartridge is prefilled as an approximate 4-week preload at the listed weekly research amount
Some important factors to consider include allergic responses, injection site reactions, electrolyte imbalances, kidney and liver function, skin-lightening concerns, drug interactions, gastrointestinal disturbances, and long-term safety
Some peptides may also be available in oral or nasal spray form depending on the formulation and purpose