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If you are trying to improve fertility, this fertility supplement guide is your roadmap. Three steps, in order — each one builds on the last. Start with your mineral foundation, support cellular energy production, then build a complete protocol based on your specific situation.

Step 1: Fix Your Mineral Foundation

Magnesium and zinc are the two most underrated minerals in fertility. Together, they are involved in over 600 enzymatic reactions — including the ones that produce testosterone, progesterone, and estrogen. Without adequate levels of both, the hormonal cascade that drives reproduction cannot function properly.

Magnesium regulates cortisol, supports progesterone production, and improves insulin sensitivity. Most adults are deficient. Zinc is concentrated in the testes and ovaries, where it directly supports sperm production, egg maturation, and the LH surge that triggers ovulation. Both minerals are foundational — everything else you add works better when these are covered first.

Start here: Best Magnesium Supplements for Fertility and Best Zinc Supplements for Fertility. Each guide covers the right form, the right dose, and the right products — with specific recommendations for men and women.

Step 2: Support Cellular Energy

Fertility is an energy-intensive process. Eggs are the most mitochondria-dense cells in the human body. Sperm motility depends entirely on ATP production in the midpiece. When mitochondrial function declines — which happens naturally with age — egg quality drops, sperm slow down, and fertilization rates fall.

CoQ10 is the central molecule in mitochondrial energy production. Supplementing it is one of the few evidence-backed interventions that directly targets the cellular machinery behind egg and sperm quality. The form matters, the dose matters, and the timing matters.

Read all three CoQ10 guides: Best CoQ10 Supplements for Fertility covers product picks and what to look for. How Much CoQ10 for Fertility breaks down dosing by sex, age, and protocol. Ubiquinol vs CoQ10 for Fertility explains the critical difference between the two forms and which one to take.

Step 3: Build Your Full Protocol

Once your mineral foundation and cellular energy are covered — the core of any fertility supplement guide —, add vitamin D to your foundation, then build a complete supplementation protocol tailored to your goals. The approach differs depending on whether you are optimizing for female fertility, male fertility, or preparing for IVF.

The Best Supplements for Fertility guide is the pillar resource. It covers the top five evidence-based nutrients — CoQ10, magnesium, zinc, omega-3s, and vitamin D — with complete dosing protocols for general preconception, egg quality, male fertility, and IVF support stacks.

All Guides

Core Supplements:

Deep Dives:

By Situation: