SwimClub Launches the First Clinically Dosed Sperm Performance Supplement

The Drop

SwimClub™ has officially launched as the first sperm performance supplement to combine evidence-based ingredients at their clinically effective doses, offering a comprehensive, science-backed solution for male fertility.

Led by CEO Steve Zanette and founded by Squared Circles — the consumer health venture studio behind brands like Freaks of Nature and Magic Molecule — SwimClub brings clinical rigor, modern brand-building, and cultural relevance to a topic long underserved: men’s reproductive health.

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Why It Exists

We’re living through what scientists now call “Spermageddon.”

• Global sperm counts have dropped 59% since 1973
• Testosterone levels have sharply declined in recent years
• Men account for ~50% of infertility cases, yet solutions overwhelmingly target women

Despite the scale of the problem, male fertility has remained stigmatized, fragmented, and poorly addressed. SwimClub was built to change that — directly, transparently, and with science leading the way.

As Dr. Michael Eisenberg, Stanford Professor of Urology and SwimClub’s Chief Scientist, explains:

“Sperm counts have plummeted due to modern stress, diet, and environmental toxins — yet no one has been addressing men directly. SwimClub represents a clinically grounded, male-first approach to this crisis.”

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The SwimClub Solution

At the core of SwimClub is its proprietary Spermatogen Complex™, formulated to target all four critical sperm parameters:

• Count
• Motility
• Morphology
• DNA integrity

Rather than requiring men to juggle 15–20 separate supplements, SwimClub delivers 12 of the most studied fertility-supporting ingredients, sourced for potency and bioavailability, in one daily regimen.

Key clinically supported ingredients include:

• Omega-3s (EPA & DHA): Support sperm motility and membrane health
• CoQ10: Enhances mitochondrial energy and protects against oxidative stress
• L-Carnitine: Improves motility and DNA integrity
• 5-MTHF Folate: Supports DNA methylation and genomic stability
• R-Alpha Lipoic Acid: Potent antioxidant linked to improvements in motility and morphology

The formulation is designed to work over a full spermatogenesis cycle (~90 days) — where real change happens.

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A Founding Story With Skin in the Game

SwimClub wasn’t built in a boardroom — it was built through lived experience.

For Squared Circles co-founder Osman Khan, fertility struggles required assembling complex supplement regimens during years of uncertainty. For CEO Steve Zanette, multiple miscarriages exposed just how few tools existed for men to meaningfully contribute to reproductive health.

SwimClub is the product both founders wish had existed sooner.

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The Playbook Take

SwimClub reflects a bigger shift happening across wellness: men are stepping into proactive ownership of reproductive health.

This isn’t about shame or blame — it’s about data, biology, and responsibility. By combining clinical science with cultural fluency, SwimClub is helping normalize a conversation that should have happened decades ago.

Male fertility is performance.
SwimClub treats it that way.