Search results: 71 results for "vitamin d3"

High Potency Vitamin D3 5000 IU | Bone & Immune Support | RetzlerRx®

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$ 28.00

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$ 24.95
Vitamin D3 2000 IU | Bone, Immune & Heart Health Support

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$ 21.95

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$ 21.95
Vitamin D3 5000 IU | High-Potency Bone & Immune Support w/ Olive Oil | RetzlerRx®

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$ 29.95

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$ 27.95
RetzlerRx® Vitamin D3 Plus K2 | 5,000 IU D3 + K1 + MK-7

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$ 31.95

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$ 31.95
D3 5000 180 Softgels

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$ 52.99

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$ 52.99
Synergy D3K2 PRO | Vitamin D3 5000 IU + K2 MK-7 180 mcg | RetzlerRx®

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$ 44.95

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$ 44.95
RetzlerRx® Vitamin D3 + K2 | 5000 IU D3 with MenaQ7® MK-7

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$ 62.00

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$ 55.95
K2-D3 10,000 120 Capsules

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$ 64.99

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$ 64.99
Vitamin D3 and Longevity

Feb 01, 2026 — AI Overview: Vitamin D3 is a hormone-like nutrient that supports bone health, immune function, muscle strength, and metabolic regulation. It is commonly measured in bloodwork and plays a role in...
Vitamin D3 and Brain Health: A Longevity Medicine Perspective

Apr 01, 2026 — AI Overview: Vitamin D3 plays an important role in brain health through its effects on inflammation, neurotransmitter activity, immune signaling, and neuroprotection. Suboptimal levels may...