Frequently Asked Questions
General Questions
What are peptides?
Peptides are short chains of amino acids — the building blocks of proteins. Certain peptides, like GLP-1 receptor agonists (Semaglutide, Tirzepatide, Retatrutide), interact with specific receptors in the body to regulate appetite, blood sugar, and metabolism. They have been extensively studied in clinical research for their role in weight management and metabolic health.
Are peptides safe?
The peptides we carry are research-grade compounds that have been the subject of extensive scientific study. However, all peptides should be used responsibly and under the guidance of a qualified healthcare professional. We always recommend consulting your doctor before starting any new health protocol.
Who are these products for?
Our products are intended for research purposes. They are not intended to diagnose, treat, cure, or prevent any disease. Individuals interested in peptide protocols should consult a licensed medical professional for personalised guidance.
Products & Dosing
What is the difference between Semaglutide, Tirzepatide, and Retatrutide?
Semaglutide is a GLP-1 receptor agonist — it mimics the hormone that signals fullness and regulates blood sugar. It's typically the starting point for most protocols.
Tirzepatide is a dual agonist — it targets both GLP-1 and GIP receptors, offering enhanced metabolic effects compared to Semaglutide alone.
Retatrutide is a triple agonist — targeting GLP-1, GIP, and glucagon receptors simultaneously. It represents the most advanced option in this class and is associated with the most significant fat loss outcomes in research settings.
Which peptide should I start with?
Most people begin with a lower-dose Semaglutide protocol to assess tolerance before progressing. We recommend discussing your goals and health history with a healthcare professional to determine the most appropriate starting point.
What is reconstitution and do I need to do it?
Peptides are supplied in lyophilised (freeze-dried) powder form and need to be reconstituted with bacteriostatic water before use. This is a straightforward process — we recommend researching the correct reconstitution ratios for your specific product and dosing protocol.
What is GHK-Cu and what is it used for?
GHK-Cu (Copper Peptide) is a naturally occurring compound studied for its role in skin regeneration, wound healing, collagen synthesis, and anti-aging. It is popular in both topical and research applications.
What is Melanotan and what does it do?
Melanotan is a synthetic analogue of the melanocyte-stimulating hormone (MSH). It has been studied for its effects on skin pigmentation (tanning), libido support, and appetite suppression.
Ordering & Shipping
Where do you ship to?
We currently ship within South Africa only. Please check our shipping policy page for full details on delivery timeframes and costs.
How long does delivery take?
Orders are dispatched within 1–2 business days. Standard delivery typically takes 8–13 business days depending on your location. We'll send you tracking information once your order has been dispatched.
How is my order packaged?
All orders are packaged discreetly to protect your privacy. Products are stored and shipped in appropriate conditions to maintain integrity.
What payment methods do you accept?
We currently accept payment via EFT (Electronic Funds Transfer) only. Banking details will be provided in your order confirmation email. Please use your order number as the payment reference and send proof of payment to info@catalystpeptides.co.za to confirm your order.
Storage & Handling
How should I store my peptides?
Lyophilised (unreconstituted) peptides should be stored in a cool, dry place away from direct sunlight. Once reconstituted, they should be refrigerated and used within the recommended timeframe. Always follow product-specific storage guidelines.
Do peptides expire?
Yes. All products have a shelf life. Lyophilised peptides generally remain stable for longer than reconstituted solutions. Check the product label and store correctly to maintain potency.
Still Have Questions?
We're here to help. Reach out to us via our contact page and we'll get back to you as soon as possible. We're committed to making sure you have all the information you need to make informed decisions.
Disclaimer: All products sold by Catalyst Peptides are intended for research purposes only. They are not intended for human consumption, and no claims are made regarding their use in the diagnosis, treatment, cure, or prevention of any disease. Always consult a qualified healthcare professional.