**How Stackable Coupon Codes Actually Work

(Why 75% + 15% ≠ 90% Off)**

Stackable coupon codes are an awesome way to maximize savings—but they’re also commonly misunderstood. Many people assume that if you stack a 75% off code with a 15% off code, the result must be 90% off.

Unfortunately, that’s not how coupon stacking works.

Below is a simple explanation that breaks down the math in a clear and transparent way.

What “Stackable” Really Means

When coupon codes are stackable, it means you’re allowed to apply multiple discounts on the same order. But these discounts are always applied sequentially, not additively.

In other words:

• You apply the first discount to the original price.

• Then you apply the second discount to the remaining balance, not the original price.

This is how WooCommerce, Shopify, Square, Amazon, and virtually every e-commerce platform handles multiple discounts.

Example: 75% Off + 15% Off

Let’s use a simple $100 product so the numbers are easy to follow.

Step 1 — Apply the 75% Off Code

• Original price: $100

• 75% off = $75 discount

• New subtotal: $25

Step 2 — Apply the 15% Off Code

This 15% is not taken from the original $100.
It is taken from the remaining $25.

• 15% of $25 = $3.75 discount

• Final total: $21.25

Final Discount Total

Original price: $100
Final price after stacking: $21.25

Actual total discount = 78.75% off, ** NOT 90% off.**

Why You Can’t Simply Add Percentages

Percent-off coupons are multipliers, not simple addition.

• A 75% discount leaves you with 25% of the price remaining.

• Then a 15% discount removes 15% of that remaining 25%, not 15% of the original.

So stacking discounts compounds them; it doesn’t add them.

The formula looks like this:

Bottom Line

Stackable coupons provide amazing savings, but they don’t combine linearly.
A 75% off code + a 15% off code is still an incredible deal, but it does not equal 90% off.

Instead, it equals 78.75% off total due to how sequential discounts work.

Orders are only processed and shipped on business days (Monday through Friday).
We do not process or ship orders on weekends or federal holidays, as our shipping carriers are also closed or operate on limited schedules during those times.

If you place an order after business hours, on a weekend, or during a holiday, it will begin processing the next business day.
Please also allow 24–48 hours for order processing before your package ships.

For time-sensitive deliveries, we recommend selecting an express or 2-day shipping option at checkout to ensure the fastest possible delivery once processing is complete.

We always strive to get all orders received before 10am PST to be dropped off at USPS and UPS that same day, (However this is not a guarantee), all orders received after 10am PST will be dropped off the following morning before 11 AM PST. However, this is not always possible due to circumstances not in our control or during times of high-volume sales. USPS especially can take 24-48 hours to start updating tracking, that is out of our hands, and we can't control. Please allow at least 48 business hours, doesn't include weekends, before expect tracking movement on your orders. * This can change during heavy volume periods, especially during sales, we always work to get orders out as quickly as possible however there can be delays.

You can file a claim HERE

🚫 Reasons for Account or Order Bans

At Southern Aminos, we value respectful, transparent interactions with all customers. However, to maintain a safe and fair shopping environment for everyone, we reserve the right to refuse or cancel future orders under certain circumstances.

Below are common reasons a customer may be banned or restricted from ordering again:

1. Suspected or Confirmed Fraudulent Activity

• Use of stolen or unauthorized payment methods

• Multiple declined or chargeback attempts

• Suspicious ordering patterns suggesting resale, identity misuse, or abuse of promotions

• Providing false or misleading account or billing information

• Filing repeat or false package claims.

Fraudulent or high-risk behavior is automatically flagged by our payment processors and may result in permanent account suspension without notice.

2. Disrespectful or Abusive Behavior Toward Staff

• Using threatening, harassing, or vulgar language in emails, messages, or support chats

• Repeatedly disregarding staff instructions or policies

• Intentionally wasting staff time with false claims or excessive hostility

We treat all customers with respect and expect the same courtesy in return. Disrespectful or hostile behavior may lead to a permanent ban from future purchases.

3. Excessive Refund or Dispute History

• Frequent refund, chargeback, or “item not received” claims

• Abuse of replacement or insurance policies

• Filing disputes before contacting support for resolution

Repeated patterns of refund or dispute abuse may indicate account misuse and can result in suspension.

4. Violation of Store or Legal Policies

• Attempting to purchase items for human consumption or off-label medical use (research-only disclaimer violation)

• Using fake names, multiple accounts, or VPNs to bypass restrictions

• Reselling or repackaging Southern Aminos products without authorization

5. Shipping or Delivery Abuse

• False claims of missing packages after confirmed delivery

• Repeated refusal of deliveries or incorrect address submissions

• Using deceptive tactics to obtain duplicate shipments

6. Chargeback or Payment Dispute Misuse

• Filing a bank dispute or chargeback without contacting customer support first

• Using chargebacks as a method of refund negotiation

All chargebacks are reported to our fraud prevention partners, and any related accounts may be blacklisted from future orders.

7. Legal or Compliance Concerns

• Ordering from restricted regions or violating import/export laws

• Requests for peptides intended for non-research, human, or therapeutic use

We comply with all U.S. regulations regarding the sale and labeling of research compounds.

⚠️ Policy Enforcement

Southern Aminos reserves the right to:

• Refuse service or cancel any order at our discretion

• Permanently ban accounts linked to fraudulent, abusive, or policy-violating behavior

• Report serious incidents to relevant authorities or payment processors

If tracking shows delivery to the correct address, and you don't have the package. First you should check with any other people living in the same household to see if any of them got it, then you should check with neighbors. If no one says they, have it you should contact the U.S. postal service or UPS about the package and provide them the tracking. We highly suggest if you live in a shared complex or you have had issues in the past with packages that you contact us at time of order and request to have signature confirmation added to the shipping.

You can file a claim here

Order Processing & Shipping Times

We aim to process all orders within 24 to 48 hours of placement. However, during periods of high order volume, processing times may be extended due to increased workload up to 5 business days.

Once your order is packed and handed off to the carrier, delivery speed depends entirely on the shipping method you selected at checkout.

Please note:

• Estimated delivery times are provided by the carrier (e.g., USPS, UPS) and are not guaranteed by us.
• Once the package is in transit, we do not control delays or delivery speed.
• If you require expedited delivery, please be sure to select an appropriate shipping option during checkout.

We appreciate your patience during busy periods and always strive to get your order out as quickly and reliably as possible.

We accept Visa/Mastercard credit and debit cards through our secure payment processor.

Due to the sensitive nature of our products, cancellations after shipment are not permitted.

No, we only ship within the Continental United States.

• Shipping times depend on the delivery method you select at checkout.

  • Express or 2-Day Shipping: 1–3 business days (fastest and most reliable)

  • Standard / Ground Shipping: 3–7 business days depending on location

  💡 Please note: Processing time (24–48 hours) is separate from the shipping time. If you need your order quickly, we strongly recommend choosing an express option.

All rates are live depending on the weight and size of your order, shipping options are displayed on the checkout page.

No. Our peptides are sold strictly for research purposes only and are not intended for human consumption or veterinary use.

Our peptides typically have a purity level of ≥98%, confirmed through rigorous testing and quality control. Detailed product specifications are available on individual product pages.

Storage conditions may vary depending on the peptide. Generally, peptides should be stored in a cool, dry place, with some requiring refrigeration. Refer to the detailed product specifications are available on individual product pages.

Because of the sensitive nature of our products we do not accept returns once products have left the control of our facility. We will work with you on refunds or re-shipments for lost, stolen, or damaged items. you can file a claim HERE.

If you have any concerns or issues with your order, please contact our customer support team (cs@southernaminos.com) immediately. We are dedicated to promptly addressing and resolving any problems.

Yes, we take data security very seriously. Our website uses SSL encryption, TLS 1.2 transport protocol, and we adhere to strict privacy policies to ensure your personal information is kept secure. We do not store any credit card information.

We respect your privacy and will not share your personal information with third parties without your consent, except as necessary to fulfill your order or comply with the law.

To ensure the fastest resolution to your inquiries, please structure your customer service emails as follows. We aim to respond to all emails within 24 hours during the standard business week. Please note that during holidays, response times may be slightly longer.

Note: Due to legal regulations, any emails regarding product usage will not receive a response.

Please Provide:

• Order #
• Name of Person Ordering
• Description of Issue

This will help us resolve your issue as quickly as possible!

Southern Aminos products are sold strictly for Research Use Only (RUO) and are available solely to qualified researchers working in controlled laboratory environments. These materials are not approved by the U.S. FDA for human or veterinary use, including clinical trials, therapeutic procedures, or any form of consumption.

Southern Aminos operates in accordance with applicable regulatory guidelines, including Section 503A of the FDCA, and limits product access to professional research applications. Additionally, Southern Aminos does not provide usage guidance or protocol recommendations. It is the responsibility of each researcher to consult appropriately qualified experts for proper use and regulatory compliance.

This is a normal occurrence and does not affect product integrity. Peptide powders may settle into a compact mass during lyophilization or shipping, then fracture into smaller powder fragments upon handling. This visual change does not compromise purity, quality, or potency.

Lyophilized (freeze-dried) peptides remain stable for up to 24 months at room temperature, provided they are kept in dry, sealed conditions. Once reconstituted with solvent, peptides should be stored at 2–8°C (refrigerated) to preserve structural integrity and prevent degradation. Note: Always avoid repeated freeze–thaw cycles to maintain peptide purity and bioactivity.

Lyophilized refers to the freeze-drying process used to stabilize peptides and other biomolecules. During lyophilization, the material is rapidly frozen and subjected to vacuum conditions, removing moisture via sublimation. This results in a dry, porous powder with extended shelf life and enhanced stability, ideal for long-term storage and precise reconstitution.

Our products undergo HPLC testing at a reputable 3rd party lab. For testing results on our products, you can find Certificate of Analysis on each product pages

o. All products offered by Southern Aminos are strictly intended for research use only and are not approved for human consumption under any circumstances. Ingesting these compounds may pose serious health risks and violates the terms of purchase.

By placing an order, buyers confirm their agreement not to consume or administer these products in any form. Access is limited to qualified researchers operating within controlled laboratory settings.

While extensive information about peptides is publicly available, Southern Amino does not offer research advice, protocol guidance, or usage recommendations. Doing so would contravene multiple regulatory standards.

By completing a purchase, you confirm that you are a qualified researcher and agree not to ingest or administer any products. All items sold by Southern Amino are strictly intended for controlled laboratory research use only.

No. Delivery times are estimates only and are not guaranteed. Once an order leaves our facility, it becomes the responsibility of the selected carrier. Transit times may vary depending on location, carrier conditions, and seasonal factors.

If a shipment experiences a significant delay, we will work with you to reach a satisfactory resolution.

USPS tracking updates may occasionally stall, with packages remaining at the same location for 2–4 days before progressing. However, if there’s no movement for 8–10 calendar days, please file a claim HERE

We trust USPS (United States Postal Service) and UPS (United Parcel Service) for all our shipments. USPS has proven to be reliable, and we can even ship to P.O. Boxes when necessary.

We highly recommend against using shipping forwarders as customers have had tons of issues with them before. Use a shipping forwarder at your own risk.

We process a large volume of orders daily, and while USPS may log the tracking information, there may be a delay in updating the status at the sorting facility. Please allow 1-2 business days for the system to reflect the latest updates.

Orders are typically processed and shipped the same business day (Monday–Friday), however this is NOT a guarantee. Since we ship from within the United States, most domestic deliveries arrive promptly regardless of payment method.

Please note: During major holidays or global disruptions, USPS may experience staffing limitations that can cause temporary delays in transit.

No. All delivery timelines listed on our site are approximate and not guaranteed. Once an item has shipped, it is fully under the control of the carrier, and transit times may vary due to routing, weather, or service delays.

If your order experiences a notable delay, please contact our support team. We’ll work with you to identify a satisfactory resolution, which may include discounts or partial refunds depending on the situation.

We completely understand how frustrating it can be when a package arrives later than expected — especially when you’ve paid for expedited delivery.

Please note that expedited shipping refers only to the carrier’s transit speed, not overall processing time.
All orders require 24–48 hours of processing before shipment, even if you select an express service.

Once your order has left our facility, delivery times are controlled by the carrier (UPS, USPS, DHL, etc.). While delays are rare, they can occur due to weather, routing issues, or high seasonal volume. Unfortunately, these situations are outside of our control.

If your package is in transit and showing as delayed, we recommend:

1. Tracking your shipment using the link in your confirmation email.

2. Allowing an additional 1–2 business days for carrier resolution.

3. Contacting the carrier directly for real-time delivery updates.

If your order still hasn’t arrived after that timeframe, please reach out to us at cs@southernaminos.com — we’ll review your tracking and assist however we can.

If your order doesn’t seem to process, reach out to our support team at cs@southernaminos.com

US Credit/Debit Cards

Contact us so that we can verify why was it returned. If the package was delivered because it states, the address was not found or not deliverable you will need to provide a correct address or a new address and pay for the re-shipping. If it was an error in the address entry on our part, then we will of course re-ship at no cost to you.

No. If we are out of a product we will refund only, we will not substitute for any other size of the product. We have done this in the past by providing a larger mg size in substitute and had too many complaints and demands for not only the larger size received but also the original size.