Ans. is a i.e. 20p.g -intensive pharmacological research clinical trials conducted to minimise the adverse effects of estrogen without reducing the contraceptive efficacy, resulted in lowering the dose of oestrogen to a minimum of 20gg or even 15gg." Examples of pills with 20p.g estrogen : Femilon : Loette Estrogen (EE) = 2opg Estrogen (EE) = 20pg Progestin (Desogestrel) = 0.15mg Progestin (Levonorgestrel) = 0.1mg Benefits of Low dose OCP's Decreased risk of Thromboembolic events with low dose OCP's.deg Note : Thrombosis risk is apparent by 4 months after staing estrogen containing OC's and does not increase fuher with continued use. Risk is highest during the first year of useq Decreased risk of high blood pressure (as compared to traditional high dose OCP's) Minimum adverse effect on lipid profile Less complains of Nausea and vomiting (as these complications are related to Estrogen component). The beneficial effects and efficacy of low dose OCP's is similar to traditional high dose OCP's whereas side effects have decreased. Extra Edge : Once a month (long acting pill). Contains : Ouniestrol (long acting estrogen) + sho acting progestin.