Common questions about Synacthene (FAQ)
Q: What is the main difference between Synacthene and a standard steroid injection?
Synacthene is a synthetic hormone (an ACTH analogue) that works indirectly. It stimulates your own adrenal glands to produce and release natural steroid hormones inside your body. In contrast, a standard steroid injection directly introduces a synthetic form of those hormones into your system.
Q: Is Synacthene a natural or synthetic hormone replacement?
The active ingredient in Synacthene, Tetracosactide, is classified as a synthetic polypeptide. It is specifically manufactured to act like your body's natural ACTH (adrenocorticotropic hormone), which signals your adrenal glands to produce their own hormones.
Q: How quickly should I expect to feel any effects from a Synacthene shot?
Official product information states that serious reactions, particularly severe allergic responses, tend to occur within 30 minutes of administration. Regulatory documents state that patients should be kept under medical observation immediately following administration. The onset of therapeutic effects may vary.
Q: What are the most commonly reported mood changes from Synacthene?
The systemic effects from the stimulated hormones can cause psychological disturbances. These can include mood swings, euphoria (feeling unusually energized), insomnia (difficulty sleeping), or changes in personality. Official documents also note the possibility of severe depression or psychotic manifestations.
Q: Can Synacthene cause long-term weight gain?
Weight gain is listed as a possible undesirable effect in official labeling. The drug stimulates hormones that can cause sodium and fluid retention in the body. This fluid retention is a common side effect of the stimulated steroids and can contribute to an increase in body weight.
Q: How long does Synacthene stay active in your system after the injection?
Regulatory documents indicate that the active substance, Tetracosactide, is rapidly distributed throughout the body. The drug is quickly broken down by enzymes in the bloodstream into inactive components after it has delivered its signal to the adrenal gland.
Q: Is it common to have pain or swelling at the Synacthene injection site?
Local skin reactions at the injection site, such as redness or pain, are documented as possible signs of a hypersensitivity reaction. Regulatory warnings indicate that if these signs occur, they may be part of a reaction which typically requires discontinuation under medical guidance.
Q: What should I avoid eating or drinking when I am on Synacthene treatment?
The hormone effects stimulated by Synacthene can cause the body to retain salt and water. A low-sodium (low-salt) diet is a specific dietary measure documented in the official labeling to help manage or prevent this fluid retention effect.
Q: Is there any research on Synacthene's use for conditions other than adrenal issues?
Official indications can vary by region. Synacthene is approved in certain countries for the treatment of specific inflammatory conditions, such as Rheumatoid Arthritis, Psoriatic Arthritis, and Ulcerative Colitis. Official prescribing information restricts use to approved indications in each region.
Q: What happens if I forget about an upcoming Synacthene appointment or injection?
Since Synacthene is always administered by a healthcare professional (a doctor or nurse), official consumer information states that a missed dose is unlikely. Patients should address any concerns about their treatment schedule or upcoming appointment with their managing care team.
Q: Can Synacthene affect blood sugar levels, especially for non-diabetics?
Yes, regulatory documents list hyperglycemia (high blood sugar) and a decrease in carbohydrate tolerance as possible undesirable effects. The stimulation of natural steroid hormones can also potentially bring out previously undiagnosed diabetes mellitus.
Q: Does taking Synacthene increase the risk of developing infections?
Official product information lists an increased susceptibility to infection as a possible undesirable effect. The medication may also activate a latent or dormant infection, such as tuberculosis, due to the effects of the stimulated hormones on the immune system.
Q: Does Synacthene require any special monitoring like blood tests?
Due to the potential for adverse effects like changes in potassium levels or effects on carbohydrate tolerance, patients may require monitoring, such as blood tests, as determined by the prescriber. This ensures safe management of the stimulated hormone levels.
Q: Can Synacthene cause problems with sleep or insomnia?
Insomnia, or the inability to fall or stay asleep, is specifically listed in the official documents as one of the possible psychological disturbances that may occur during Synacthene treatment.
Q: Will using Synacthene affect my ability to drive or operate machinery?
Official product information advises caution when performing tasks requiring alertness, such as driving or operating machinery. This caution is advised because the medication can cause systemic effects that might affect attention or reaction time.
Q: What should I do if I experience nausea or stomach upset from Synacthene?
Nausea and vomiting are documented as symptoms associated with general hypersensitivity reactions to the drug. If a patient experiences these or any other persistent or concerning symptoms, they should be reported promptly to the healthcare professional managing their care.
Q: Why is Synacthene only available as a prescription drug?
Synacthene is classified as a Prescription Only Medicine (POM) by regulatory authorities. This classification is due to the nature of its pharmacological effects, the need for it to be administered under medical supervision, and the potential for serious adverse reactions that require professional management.
Q: Are there any known side effects on vision from Synacthene?
The official product labeling lists several potential effects on the eyes. These include an increase in pressure inside the eye (glaucoma), the formation of cataracts behind the lens, and bulging of the eyeballs (exophthalmoses).
Q: Is it normal to feel a bit flushed or warm right after receiving Synacthene?
Flushing of the skin is documented as a possible symptom of a hypersensitivity (allergic) reaction. Because flushing may be a symptom of a hypersensitivity reaction, regulatory information stresses that patients should be monitored for this and other related signs (such as itching or dizziness).
Q: Does Synacthene show up on a standard drug screening test?
The active substance in Synacthene, Tetracosactide, may interfere with routine drug testing in athletes. Regulatory documents state that patients may be required to disclose this medication to testing authorities, particularly in athletic competitions.
Q: Does Synacthene have any impact on fertility or reproductive health?
Regulatory documents indicate that no specific data is available on the effects of Synacthene on human fertility. For both pregnancy and breastfeeding, the drug is generally not recommended by regulatory authorities.
Q: What are the signs of a serious allergic reaction to Synacthene I should look out for?
Signs of a severe allergic reaction may include marked redness and pain at the injection site, hives (urticaria), intense itching, dizziness, difficulty breathing, or swelling of the face, lips, or tongue. If any of these signs occur, immediate medical attention is required.
Q: Why do patients sometimes call Synacthene a 'steroid' even though it's a hormone?
Synacthene is correctly classified as a hormone analogue, not a steroid. However, because its job is to trigger the release of your body's own powerful natural steroid hormones (glucocorticoids), its overall physiological effect is similar to receiving external steroid therapy. This similarity likely leads to the common usage of the term 'steroid' by patients.
