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Antiemetics Pharmacology

Pregnancy prevention

Postinor 2 Description 0.75 mg levonorgestrel in each tablet. Excipients/Inactive Ingredients: silica colloidal anhydrous, magnesium stearate, potato starch, talc, maize starch, lactose monohydrate. Action Pharmacotherapeutic Group: Sex hormones and modulators of the genital system, Emergency contraceptives. ATC Code: G03A Efficacy: It was estimated from the results of an earlier clinical study, that 750 micrograms of levonorgestrel (taken as two 750 microgram doses with a 12 hour interval) prevents 85% of expected pregnancies. Efficacy appears to decline with time of start of treatment after intercourse (95% within 24 hours, 85% 24-48 hours, 58% if started between 48 and 72 hours). Results from a recent clinical study showed that two 750 microgram tablets of levonorgestrel taken at the same time (and within 72 hours of unprotected sex) prevented 84% of expected pregnancies. There was no difference between pregnancy rates in case of women who were treated on the third or the fourth day after the unprotected act of intercourse (p>0.2).There is limited and inconclusive data on the effect of high body weight/high BMI on the contraceptive efficacy. In three WHO studies no trend for a reduced efficacy with increasing body weight/BMI was observed (Table 1), whereas in the two other studies (Creinin et al., 2006 and Glasier et al., 2010) a reduced contraceptive efficacy was observed with increasing body weight or BMI (Table 2). Both meta-analyses excluded intake later than 72 hours after unprotected intercourse (i.e. off-label use of levonorgestrel) and women who had further acts of unprotected intercourse. (See the recommended regimen, levonorgestrel is not expected to induce significant modification of blood clotting factors, and lipid and carbohydrate metabolism. Paediatric population: A prospective observational study showed that out of 305 treatments with levonorgestrel emergency contraceptive tablets, seven women became pregnant resulting in an overall failure rate of 2.3%. The failure rate in women under 18 years (2.6% or 4/153) was comparable to the failure rate in women 18 years and over (2.0% or 3/152).Pharmacokinetics: Orally administered levonorgestrel is rapidly and almost completely absorbed. The results of a pharmacokinetic study carried out with 16 healthy women showed that following ingestion of 1.5 mg levonorgestrel maximum drug serum levels of 18.5 ng/ml were found at 2 hours. After reaching maximum serum levels, the concentration of levonorgestrel decreased with a mean elimination half-life of about 26 hours.Levonorgestrel is not excreted in unchanged form but as metabolites. Levonorgestrel metabolites are excreted in about equal proportions with urine and faeces. The biotransformation follows the known pathways of steroid metabolism, the levonorgestrel is hydroxylated in the liver and the metabolites are excreted as glucuronide conjugates. No pharmacologically active metabolites are known.
Stephen_Moses_6913 · 1.6K Views

Love in Jade Cosmos

A modern elite in the field of pharmaceutical chemistry falls down from a waterfall and, through the mysterious power contained in a personal jade pendant, her soul is transported into the body of a young girl in the ancient oriental country. In there, she meets the royal family whose son is her destiny. The lovers jump between the real world and her jade cosmos as their mysterious and fantastical story unfolds. In her portable space accessed through the ancient jade pendant, the landscapes of mountains, rivers, lakes, and seas continuously unfold with the protagonist's journey. Advantaged by the time passes at a rate 20 times faster in this space, accompanied by the guardian spirit of this realm, the otherworldly soul, Tong Xiangbei, use her special power and knowledges in collaboratively pioneer and establish a stunning business empire. **Novel Outline: "Jade Cosmos Chronicles"** **Part One: Journey Across Realms** Renowned pharmaceutical chemist Tong Xiangbei unexpectedly finds herself traversing into an ancient oriental realm after a waterfall incident. Utilizing the mystical power contained in her ancient jade pendant, she discovers a parallel space with a time flow 20 times faster and a spatial map unlocking synchronously with her actions in the real world. This part will delve into her exploration and adaptation to the unfamiliar and mysterious world. **Part Two: Shaping Destiny** In the Jade Cosmos, Tong Xiangbei leads her family and mountain hunters in cultivating fields and processing, altering their destiny from poverty to prosperity. Leveraging modern knowledge and the accelerated time in her jade space, she pioneers a groundbreaking civilization, injecting a revolutionary vitality into the ancient oriental country. **Part Three: Prosperity Unveiled** Continuously collecting and transplanting new species, Tong Xiangbei finally activates the ancient spatial matrix left by the elder of the ancient Qi sect. This part will focus on her collaboration with General's heir Qiao Ziqiu, Eastshore Mo Wang, and her maternal uncle Nanyue Cheng Wang, as they drive away sea invaders, explore the southern seas, and establish prosperous trade routes, scripting a brilliant chapter of economic prosperity. **Part Four: Ascension into Mystical Realms** From their initial encounter to love and the grand wedding night, Tong Xiangbei and Eastshore Mo Wang enter the spatial realm, initiating the foundational stage of cultivating Qi. Post-wedding, they venture into the capital, building a harmonious relationship with the royal family, eventually assuming the responsibilities of the Crown Prince and collaborating with royal siblings to usher in a new era of civilization. **Climax: Unveiling the Ultimate Secret** As they break through the high-level Qi stage in the spatial matrix, Tong Xiangbei suddenly unravels the ultimate secret behind her time-travel, adding a suspenseful and gripping twist to the entire narrative. main characters 1. Tong Xiangbei: An eminent scientist in the field of modern pharmacology, unexpectedly transported to an ancient Eastern country. Utilizing modern knowledge and the power of the Jade Universe, he shapes a new civilization. 2. Eastshore DongBin Prince Mo: A prince of the ancient Eastern country, destined to meet Tong Xiangbei. Together, they experience mysterious and fantastical adventures, eventually becoming founders of a commercial empire. 3. Qiao Ziqiu: The second son of the Qiao family, heir to the General’s household. 4. Lord of Southern Area Nanyue, King Cheng:Tong Xiangbei’s maternal grandfather, who supports and assists her in establishing a new life in the ancient Eastern country. 5. Realm Spirit Symbiosis, Gong Sheng:The guardian spirit of the Jade Universe, left behind by ancient Qi sect elders. Together with Tong Xiangbei, they activate the Spatial Array, providing strength for the birth of a new civilization. 6. Cave Spirit, Fox Guardian of Jade Snowflake Cave.
CosmicAirbender · 131.7K Views
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