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Amethyst
Amethyst is a combination oral contraceptive that contains ethinyl estradiol and desogestrel. It is primarily used for the prevention of pregnancy and may help regulate menstrual cycles. By using a combination of estrogen and progestin, Amethyst effectively prevents ovulation, thickens cervical mucus to block sperm, and alters the uterine lining to prevent implantation. This medication can also provide benefits such as reduced menstrual cramps and lighter periods.
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Frequently Asked Questions
How long does it take for Amethyst to become effective?
Amethyst is generally effective after 7 days of consistent use. For immediate protection, it is advisable to use backup contraception during this period.
What should I do if I miss a dose of Amethyst?
If you miss a dose, take it as soon as you remember. If it is close to the time for your next dose, skip the missed dose and continue with your regular dosing schedule.
Can I use Amethyst while breastfeeding?
Amethyst is not typically recommended for breastfeeding women, as estrogen may affect milk production. Consult your healthcare provider for alternatives if you are breastfeeding.
Will Amethyst affect my weight?
Weight changes can occur with hormonal contraceptives, but individual responses vary. It's important to discuss any concerns with your healthcare provider.
Can I stop using Amethyst suddenly?
Yes, you can stop using Amethyst without tapering, but consult your healthcare provider if you have concerns about ongoing contraception management.
Comprehensive Drug Guide
How Does Amethyst Work?
Amethyst works by combining two hormones: ethinyl estradiol (an estrogen) and desogestrel (a progestin). This combination inhibits the natural hormonal cycle, preventing the release of an egg (ovulation). Additionally, it thickens the cervical mucus, making it difficult for sperm to enter the uterus, and alters the endometrial lining, reducing the likelihood of implantation should fertilization occur.
Common Dosages
- Tablets: 0.15 mg desogestrel and 0.02 mg ethinyl estradiol
Typical Dosing
- The recommended dosing regimen is one tablet taken orally once daily at the same time every day. The treatment cycle usually consists of 28 active pills, with 21 active and 7 inactive pills.
Typical Dosing
FDA Approved Indications
- Prevention of pregnancy in women of reproductive age
Who Shouldn't Take Amethyst?
- Known hypersensitivity to ethinyl estradiol, desogestrel, or any components of the formulation
- History of thromboembolic disorders (e.g., deep vein thrombosis, pulmonary embolism)
- Certain types of cancers (e.g., breast cancer or hormone-sensitive tumors)
- Uncontrolled hypertension
Advice From The Pharmacist
- Take Amethyst exactly as prescribed, and do not skip doses to maintain contraceptive efficacy.
- If a dose is missed, follow the instructions provided by your healthcare provider regarding missed pills.
- Be aware of potential side effects, such as nausea or breast tenderness, particularly when starting the medication.
- Regular follow-up appointments with your healthcare provider are important to monitor for any adverse effects or complications.
Side Effects of Amethyst
Common Side Effects
- Nausea
- Headache
- Breast tenderness
- Mood changes
Uncommon/Severe Side Effects
- Blood clots (deep vein thrombosis or pulmonary embolism)
- Severe allergic reactions (e.g., rash, itching, swelling)
Risks and Warnings of Amethyst
- Thromboembolic Events: Women using combination oral contraceptives are at increased risk of blood clots. This risk is higher in smokers and those with other risk factors.
- Monitoring: Regular monitoring of blood pressure and other health parameters is recommended during use.
- Cancer Risk: Long-term use of oral contraceptives may have implications for breast and cervical cancer risk; patients should discuss their personal and family medical history with their healthcare provider.
Interactions with Amethyst
Common Drug Interactions
- Antibiotics: Some antibiotics may reduce the effectiveness of hormonal contraceptives; consult your healthcare provider for guidance if antibiotics are needed.
- Anticonvulsants and Antiretrovirals: Certain medications can affect the metabolism of Amethyst, potentially leading to decreased efficacy.
Alternatives to Amethyst
- Other hormonal contraceptives: Such as different combination oral contraceptives, progestin-only pills, or hormonal IUDs.
- Barrier methods: Including condoms or diaphragms.
- Long-acting reversible contraceptives (LARCs): Such as implants or IUDs that do not require daily attention.
