Evidence-based supplement dosing

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Optimal Dose

Explore evidence-based calculators to help you discover personalized dosing for supplements, nutrition, and herbal support — tailored to your health goals.

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SMART TOOLS

Committed to Quality

Personalized, evidence-driven tools created to help you optimize nutrition, hormones, and wellness.

Doctor Created

Evidence Based

Built from current guidelines and peer-reviewed research.

Clinically Tested

Recommendations grounded in real-world clinical practice.

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Supplement Dosing Calculators

Vitamin D Calculator

Protein Intake Calculator

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About the Creator

Dr. Linda Nykin

Naturopathic Doctor · Certified Functional Medicine Practitioner

Dr. Linda Nykin is the founder of Pacha Integrative and Naturopathic Medicine in Berkeley, California, specializing in women’s health, gut health, and hormone balance. Her practice combines evidence-based medicine with a root-cause, integrative approach to care.

Clinical expertise, made accessible.

Dr. Nykin built these tools to answer the questions she hears most in practice — translating clinical nuance into clear, evidence-based recommendations personalized to each individual.

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Find YourOptimal Dose