Generic Name: antivenin (LATRODECTUS MACTANS) (Injection route)
an-tee-VEN-in (lat-roe-DEK-tus MAK-tans)
Commonly used brand name(s)
In the U.S.
Available Dosage Forms:
- Powder for Solution
Therapeutic Class: Antivenom
Uses For Antivenin-Spider
Black widow spider antivenin belongs to a group of medicines known as immunizing agents. It is used to treat patients with serious symptoms caused by the bites of the black widow spider.
This medicine is to be given only by or under the direct supervision of a doctor.
Before Using Antivenin-Spider
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of antivenin injection in children.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of antivenin injection in the elderly. However, elderly patients are more likely to have unwanted effects from bites from the black widow spider, suggesting that antivenin should be given as a preferred initial therapy .
|All Trimesters||C||Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.|
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Interactions with Medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.
Interactions with Food/Tobacco/Alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other Medical Problems
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
- Allergy to horse serum, history of—Should not be used in patients with this condition unless absolutely necessary.
- Asthma, history of—Use with caution. May make this condition worse.
Proper Use of antivenin (latrodectus mactans)
This section provides information on the proper use of a number of products that contain antivenin (latrodectus mactans). It may not be specific to Antivenin-Spider. Please read with care.
A nurse or other trained health professional will give you this medicine in a hospital or clinic. This medicine is given as a shot into a muscle (thighs) or vein.
A single dose of this medicine is usually enough for most patients. However, a second dose may be given to some patients if needed.
Precautions While Using Antivenin-Spider
Your doctor will check your progress closely while you are receiving this medicine. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to receive it.
This medicine may cause a serious type of allergic reaction called anaphylaxis. Anaphylaxis requires immediate medical attention. The most serious signs of this reaction are very fast or irregular breathing, gasping for breath, wheezing, or fainting. Other signs may include changes in color of the skin of the face, very fast but irregular heartbeat or pulse, hive-like swellings on the skin, and puffiness or swellings of the eyelids or around the eyes. If these side effects occur, tell your doctor right away.
Check with your doctor right away if you have a feeling of discomfort, fever, inflammation of the joints, itching, muscle aches, rash, or swollen lymph glands within 8 to 12 days after receiving this medicine.
Antivenin-Spider Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor or nurse immediately if any of the following side effects occur:Incidence not known
- difficulty with swallowing
- fast heartbeat
- feeling of discomfort
- inflammation of the joints
- muscle aches or cramps
- puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
- reddening of the skin, especially around the ears
- shortness of breath
- skin rash
- swelling of the eyes, face, or inside of the nose
- swollen lymph glands
- tightness in the chest
- unusual tiredness or weakness (sudden and severe)
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
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