Four Sigmatic Promo Codes & Coupons July 2026

New customers can get 15% off their initial purchase of any Four Sigmatic products. This offer is valid for one-time use.

Save up to 15% on various Mushroom Protein Powder flavors, including Peanut Butter and Creamy Cacao. Discount varies by product.

All orders totaling $50 or more qualify for complimentary standard shipping within the US. No minimum item count required.

Active military members and veterans receive a 10% discount on all purchases. Verification may be required during checkout.

Purchase a Four Sigmatic Starter Kit and receive up to 20% off the regular price. Kits include a variety of popular products.

Subscribe to the Four Sigmatic newsletter and receive a special 10% off coupon for your next purchase. One-time use per customer.

Receive 20% off every order when you sign up for a recurring subscription. This discount applies to all functional mushroom products.

Refer a friend to Four Sigmatic and receive a 15% discount on your next order. Your friend also gets a first-time discount.

Purchase one Mushroom Hot Cacao item and get a second item at 40% off. Offer applies to Mushroom Hot Cocoa with Reishi.

During the Prime Day event, select items are discounted by up to 20%. Look for deals on popular mushroom coffee blends.

Eligible students can claim a 10% reduction on their orders. Student ID or verification service may be necessary.

Select Mushroom Coffee with Lion's Mane products are available starting at $15. Check product page for specific pricing.

Healthcare professionals are eligible for a 10% discount on their Four Sigmatic purchases. Proper identification will be requested.

Save 15% on various Mushroom Capsules, including Lion's Mane and Reishi varieties. Discount applied to specific capsule products.

Get 10% off select bundle and save options during the New Year's promotional period. Available for various product combinations.