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From Tucson to your door

Shipping & Returns

Free USPS shipping to all 50 states, with careful packaging for every item.

SHIPPING COSTAlways free
CARRIER & DESTINATIONUSPS · All 50 states
TYPICAL DELIVERY3–5 business days

Shipping

All orders ship exclusively through USPS from Tucson, Arizona. Shipping is free to all 50 U.S. states and typically takes 3–5 business days. We do not ship internationally.

Your delivery address

Please confirm that your shipping address is complete and correct before finalizing your purchase. You are responsible for providing the correct address. We cannot change an address once an order has shipped.

Returns & final sales

All research peptide purchases are final sale. Research peptides are not eligible for returns.

Damaged delivery?

Let us know within
3 business days.

Every item is packaged with care. If an item arrives damaged, email bigboygainz520@gmail.com within 3 business days of order delivery.

Please include:

  • Detailed photos of the shipping packaging, including the outer mailing box or envelope.
  • Detailed photos of the Big Boy Gains product packaging and the damaged item.
  • Your full name and delivery address.
  • Your original order number.
EMAIL SUBJECTDamaged Order - [Order Number]

Replace [Order Number] with your original order number and attach the required photos before sending.

Email about a damaged order ↗
Big Boy Gains

Your cart

Second identical item 40% off, plus an extra 15% off any 5+ items. Both apply automatically.

Add any 5 items for an extra 15% off.

Items before savings$0.00
Subtotal$0.00
Shipping · USPSFREE

USD · U.S. delivery only. Typically 3–5 business days. Merchandise subtotal shown; any applicable tax will be confirmed with your payment link.

Shipping & Returns ↗

Payment-link contact details

We’ll use these details to handle your request and email an external payment link as soon as possible. Web3Forms delivers your request details, including your mailing address, to our business inbox. Check your email carefully. Submitting does not charge you or confirm a paid order.

Enter your name, email, and full mailing address, then accept the agreement to request a payment link. We’ll email it as soon as possible.