Multivitamins
GNC Energy & Metabolism Multivitamin
$19.99$34.99
Save $15 on a women's energy and metabolism multivitamin.
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GNC promo codes for October 2026
We tested every code and deal on this page against a real GNC cart today. 0 of 0 still work — the rest are listed below with the date they stopped.
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Prices read 21 Oct 2026 from GNC's deals page
Men's health
Mega Men® Ultra Testosterone Booster
$89.99$139.99
Buy one, get 50% off a second: a best-selling testosterone booster.
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Vitamin D
GNC Vitamin D-3 Tablets
$21.99$71.99
Buy one, get 50% off a best-selling 2000 IU vitamin D-3 supply.
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Sleep support
GNC Melatonin Lozenges 1 mg
$14.99$64.99
Buy one, get 50% off a best-selling cherry melatonin lozenge.
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