The 15% off promo code at the top of this page is the lead offer for 310 Nutrition. Use that code to get 15% off your order; it is the simplest choice if you want a one off saving across any items in your cart and you are not combining it with other offers. Subscription and multi bag deals listed below can save more if your purchase meets their conditions.
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Small orders under $90 or a single non selected shake: use the 15% off promo code. For example, on a $120 order, the promo code takes 15% off, reducing the price from $120 to $102, so you save $18. The code cannot be used with other offers, but it applies to a general cart where no sale condition is met.
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Orders that qualify for free shipping ($90 or more): aim to hit the $90 threshold to avoid shipping charges, then compare the 15% code with the product deals. If your cart is $90 exactly, the 15% code reduces it to $76.50, saving $13.50, and you keep free shipping because the site measures the threshold at $90 before any code if the terms do so; check the site for how threshold is measured if that is critical.
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Buying one selected shake bag: the site marked price with 16% off selected shakes applies without a code. If the single shake bag is $40, the 16% sale reduces it to $33.60, a saving of $6.40. Compare that to using the 15% promo code on the $40 bag, which would save $6 and leave the price at $34. The 16% sale is better for a single selected bag.
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Buying two selected shake bags: the buy two deal gives 20% off those selected items. On two $40 bags ($80 original), 20% off leaves $64, a $16 saving. That beats the 15% promo code, which would leave two $40 bags at $68, saving $12.
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Buying three selected shake bags: the three bag offer gives 25% off selected shake bags. On three $40 bags ($120 original), 25% off leaves $90, saving $30. That is clearly better than the 15% code, which would save $18 on $120.
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Subscription orders: the 25% off subscription order is the best pick for repeat deliveries. If you plan to subscribe, choose the subscription option to get 25% off that order rather than applying the 15% promo code, because the code cannot be used with other offers.
Deciding between the options: run the numbers for your exact cart and take whichever leaves the lower total. The code at the top is easiest for mixed carts and small spends; use the subscription or multi bag sale when your items meet their minimums because their percent saving is larger than 15% in those cases. The two bag, three bag and subscription offers do not require a promo code and cannot be combined with the code when the terms say offers cannot be used together, so pick the single option that gives the biggest reduction.
Our records in the 12 months to October 2026 show 33 offers listed for 310 Nutrition (27 sales and deals, 3 delivery offers, 2 codes, 1 other). Percentage codes in that period were 2 and the biggest code was 15% off (March 2026). The biggest percentage sale or deal in that time was up to 70% off in December 2025.