At a glance
Learn about common medications used in PGT cycles in Thailand, including ovarian stimulation drugs, trigger shots, and how prescriptions are managed for international patients.
Understanding Medication Protocols for PGT Cycles
In vitro fertilization (IVF) with preimplantation genetic testing (PGT) involves a series of medications to control the menstrual cycle, stimulate the ovaries to produce multiple eggs, and prepare the uterus for embryo transfer. While specific protocols are tailored to each patient, there are common medication categories and delivery methods used in Thailand. This guide provides a general overview to help you plan your treatment journey. Always confirm your exact medication plan with your treating clinic.
Common Ovarian Stimulation Protocols
Two main protocols are used to stimulate the ovaries: the antagonist protocol and the agonist protocol. Your doctor will choose based on your age, ovarian reserve, and previous response to treatment.
Antagonist Protocol
This is the most common protocol for PGT cycles. It uses gonadotropin-releasing hormone (GnRH) antagonists to prevent premature ovulation. Typical steps include:
- Ovarian stimulation: Daily injections of follicle-stimulating hormone (FSH) and/or luteinizing hormone (LH) for about 10–12 days.
- GnRH antagonist: Added around day 5–6 of stimulation to suppress natural LH surge.
- Trigger shot: A single injection of human chorionic gonadotropin (hCG) or a GnRH agonist to finalize egg maturation, given 36 hours before egg retrieval.
Agonist (Long) Protocol
This older protocol uses a GnRH agonist to suppress the pituitary gland before stimulation. Steps include:
- Down-regulation: Daily GnRH agonist injections or nasal spray starting in the luteal phase of the previous cycle, continued for about 10–14 days.
- Ovarian stimulation: Once suppression is confirmed, FSH/LH injections are added while continuing the agonist.
- Trigger shot: hCG is used to trigger final maturation.
Medication Delivery Methods
Most fertility medications are injectable, but some are available as nasal sprays or oral tablets. Common delivery methods include:
- Subcutaneous injections: Given into the fatty tissue of the abdomen or thigh using a fine needle. Many patients self-administer after training.
- Intramuscular injections: Used for some trigger shots (e.g., hCG) and progesterone in oil. These are deeper injections often given by a nurse or partner.
- Nasal spray: GnRH agonists (e.g., buserelin) can be given as a spray.
- Oral tablets: Some medications like letrozole or clomiphene citrate may be used for mild stimulation, but are less common in PGT cycles.
Common Medication Names
Below are examples of medications used in PGT cycles. Brand names may vary in Thailand. Your clinic will prescribe specific products.
| Category | Generic Name | Common Brand Examples |
|---|---|---|
| FSH (follicle-stimulating hormone) | Follitropin alfa, follitropin beta | Gonal-F, Puregon, Follitrope |
| LH (luteinizing hormone) | Lutropin alfa | Luveris |
| hMG (human menopausal gonadotropin) | Menotropin | Menopur, Merional |
| GnRH antagonist | Cetrorelix, ganirelix | Cetrotide, Orgalutran |
| GnRH agonist | Leuprolide, buserelin, triptorelin | Lupron, Suprefact, Decapeptyl |
| hCG trigger | Chorionic gonadotropin | Pregnyl, Ovidrel, Novarel |
| Progesterone (luteal support) | Progesterone | Endometrin, Crinone, Prometrium |
How Prescriptions Are Managed for International Patients
For patients traveling to Thailand for PGT, medication management involves several steps:
- Prescription from Thai clinic: After your initial consultation and diagnostic tests, the Thai clinic will issue a prescription for your specific protocol. You may receive a detailed medication schedule.
- Purchasing medications: You can buy medications from the clinic’s pharmacy or a licensed pharmacy in Thailand. Some clinics may allow you to bring medications from your home country, but you must check import regulations and ensure proper storage during travel.
- Shipping medications: Some clinics can arrange to ship medications to your home country before travel, but this depends on customs laws. Confirm with your clinic.
- Self-administration training: Most clinics provide training on how to inject medications. You may need to practice under supervision before returning to your accommodation.
- Monitoring during stimulation: You will visit the clinic every 1–3 days for blood tests and ultrasounds to adjust medication doses. This is why staying near the clinic is recommended.
Important Considerations for International Patients
- Travel with medications: Keep medications in their original packaging with prescription labels. Carry a doctor’s letter explaining the medical necessity. Check with your airline for carry-on rules for needles and liquids.
- Temperature control: Some medications require refrigeration. Use a travel cooler pack and confirm storage at your accommodation.
- Customs regulations: Thailand allows import of personal medications for up to 30 days with a prescription. For larger quantities, you may need a permit. Always verify with the Thai Food and Drug Administration or your clinic.
- Cost of medications: Medication costs vary. Ask your clinic for a detailed cost estimate. Some medications may be cheaper in Thailand than in your home country.
Questions to Ask Your Clinic
- What specific medications will be in my protocol?
- Can I purchase medications at the clinic or a nearby pharmacy?
- Do you provide training for self-injection?
- What is the estimated cost of medications for my cycle?
- Can I bring medications from home? If so, what documentation is needed?
- How should I store medications during my stay?
Conclusion
Understanding the medications used in PGT cycles helps you prepare for treatment in Thailand. While protocols follow international standards, your clinic will customize your plan. Always communicate openly with your medical team and confirm all details before travel.
Frequently asked questions
What are the most common medications used in PGT cycles?
Common medications include FSH (e.g., Gonal-F), LH, hMG, GnRH antagonists (e.g., Cetrotide), GnRH agonists (e.g., Lupron), hCG trigger shots, and progesterone for luteal support.
Can I bring my own fertility medications to Thailand?
You may be able to bring personal medications with a prescription and doctor's letter, but check Thai customs regulations and confirm with your clinic. Some medications require refrigeration.
How are medications prescribed for international patients?
After consultation, the Thai clinic issues a prescription. You can purchase medications locally or, in some cases, have them shipped. The clinic will provide a schedule and training for self-administration.
Do I need to stay in Thailand during the entire medication cycle?
Yes, you need to be near the clinic for monitoring (blood tests and ultrasounds) every 1–3 days during ovarian stimulation, which lasts about 10–14 days. The entire cycle from start to embryo transfer may take 3–6 weeks.
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Medical information notice: This article is educational and does not replace individual assessment, diagnosis, genetic counselling or treatment advice from a licensed clinician. Provider services, availability, fees and policies should be verified directly before booking.
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