Four Sigmatic Promo Codes for October 2026

Receive a complimentary frother when you meet a specific purchase threshold. Check promotion details for minimum spend.

Refer a friend to Four Sigmatic and both receive 10% off. Your friend's first purchase triggers the discount.

Warm beverage options like Mushroom Hot Cacao and Hot Cocoa are 15% off. This applies to all flavors.

Educators can save 10% on all mushroom protein powders. Present valid teacher credentials for this benefit.

Eligible students receive 10% off any mushroom blend products. Student ID verification is required.

The 10-Mushroom Blend product starts at a price of $30. This blend offers a variety of functional mushrooms.

First-time shoppers can save 15% on their initial purchase. This applies to all items in the catalog.

Orders totaling $50 or more qualify for complimentary standard shipping. No minimum item count is required.

Various mushroom protein powders, including creamy cacao and sweet vanilla, are available from $35. Choose your preferred flavor.

A 10% discount is available for verified first responders. This covers all products listed on the site.

Select mushroom coffee bundle packs are discounted by up to 20%. Look for pre-selected product combinations.

Verified military personnel receive 10% off their entire order. This offer applies to all functional mushroom items.

A seasonal promotion offers up to 20% off on various products. Check the website for current marked-down selections.

The Chill Coffee and Defend Coffee products are currently 10% off. These blends offer specific functional benefits.

Purchase one pack of mushroom capsules and receive a second pack at 50% off. Discount applies to items of equal or lesser value.

During the New Year New You sale, wellness blends like Focus and Calm are 15% off. Start your year with healthy habits.