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Yaz is recognised for its use in preventing pregnancy (contraception) and managing certain health conditions related to hormones.

Last Modified: 10 Jul 2024

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What is Yaz? 

Yaz is a combined oral contraceptive pill that contains ethinyl estradiol and drospirenone as active ingredients. This medication is recognised for its use in preventing pregnancy (contraception) and managing certain health conditions related to hormones. Yaz includes a synthetic estrogen (ethinyl estradiol) and a progestin (drospirenone). These ingredients are carefully synthesised in pharmaceutical labs to ensure their efficacy and safety in birth control and hormonal regulation. 

Global Name

  • Generic Name: Ethinyl estradiol and drospirenone 
  • Brand Names: Yaz, Yasmin, Ocella, Gianvi 


What is Yaz used for? 

Yaz is primarily used to prevent pregnancy. Additionally, it is effective in treating symptoms of premenstrual dysphoric disorder (PMDD) and is used in the management of moderate acne in women who seek an oral contraceptive for birth control. 

How do you use Yaz?  


Yaz is available in tablet form.

Dosage information:

  • One tablet daily, preferably at the same time each day. 
  • Follow the 24/4 day regimen: 24 active hormone pills followed by 4 placebo pills. 

Suitability across different age groups:  

  • Children: Not recommended for pre-pubertal children. 
  • Adults: Suitable for women of reproductive age. 
  • Elderlies: Generally not applicable, as it is not recommended post-menopause. 

Is there anyone who can’t take Yaz? 

  • Children: Not to be used by children. 
  • Adults: Women over 35 who smoke should not use Yaz. 
  • Elderlies: Not recommended for use. 
  • Pregnancy: Should not be taken during pregnancy. 
  • Lactation: Not recommended for breastfeeding mothers. 
  • Breast & other cancers: Not for use in patients with breast cancer or estrogen or progesterone-sensitive cancers. 
  • Liver disease or tumors: Not indicated for patients with these conditions. 
  • Arterial or venous thromboembolic disorders: Not for patient at high risk for blood clot formation 

Allergies and other contraindications: 
Individuals allergic to ethinyl estradiol, drospirenone, or any inactive ingredients in Yaz should avoid it. 

Warnings and Precautions:

Take after meals to reduce stomach upset. Avoid smoking as it increases the risk of serious cardiovascular side effects. 

Drug and Food/Beverage Interactions

  • Avoid using with drugs that have a high potential to increase potassium levels. 
  • Should not be used in people with renal impairment, adrenal insufficiency, or liver disease. 

Side Effects

Common side effects include nausea, headache, and breast tenderness. Severe side effects may include blood clots and hypertension. 

Pharmacist Tips

Storage information:

Store at room temperature away from moisture and heat. 
Handling instructions:

Handle the blister packs with care to avoid damaging the tablets. 



Where is Yaz available in Hong Kong?

Yaz is an over-the-counter (OTC) medication that can be sold without a prescription. It is found in all chain drug stores, including Mannings and Watsons in Hong Kong.



Can Yaz be used as emergency contraception? 

No, Yaz is not intended for use as emergency contraception.

How long does it take for Yaz to be effective?

Yaz becomes effective after 7 days of consecutive use.

Can I skip the placebo pills?

Yes, skipping the placebo pills is possible and does not affect the contraceptive efficacy.

What should I do if I miss a dose?

If you miss a dose, take it as soon as you remember. If it's near the time of the next dose, skip the missed dose and resume your usual dosing schedule.


This website provides content related to drug use and medicine for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Do not use the information on this website to diagnose or treat a health problem or disease without consulting a qualified healthcare provider. The website's owners and contributors are not liable for any repercussions, adverse effects, or consequences resulting from the use of any medication or information provided herein.

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