• Dosage of Gero in details
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Dosage of Gero in details

Gero Dosage

Generic name: Gero

Dosage form: injection, USP

The information at Drugs.com is not a substitute for medical advice. Always consult your doctor or pharmacist.

As with all local anesthetics, the dose of Gero varies and depends upon the area to be anesthetized, the vascularity of the tissues, the number of neuronal segments to be blocked, individual tolerance, and the technique of anesthesia. The lowest dose needed to provide effective anesthesia should be administered. For specific techniques and procedures, refer to standard textbooks.

RECOMMENDED DOSAGE FOR SPINAL ANESTHESIA

Extent of Anesthesia	Gero 10% Solution		Total Dose (mg)	Site of Injection (lumbar interspace)
	Volume of 10% Solution (mL)	Volume of Dilution (mL)
Perineum	0.5	0.5	50	4th
Perineum and lower extremities	1	1	100	3rd or 4th
Up to costal margin	2	1	200	2nd, 3rd or 4th

The diluent may be sterile normal saline, sterile distilled water, spinal fluid; and for hyperbaric technique, sterile dextrose solution.

The usual rate of injection is 1 mL per 5 seconds. Full anesthesia and fixation usually occur in 5 minutes.

STERILIZATION

The drug in intact ampuls is sterile. The preferred method of destroying bacteria on the exterior of ampuls before opening is heat sterilization (autoclaving). Immersion in antiseptic solution is not recommended.

Autoclave at 15-pound pressure, at 121°C (250°F), for 15 minutes. The diluent dextrose may show some brown discoloration due to caramelization.

Protect solutions from light.

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Professional resources

• Gero (AHFS Monograph)
• Gero (FDA)

Related treatment guides

• Local Anesthesia

What other drugs will affect Gero?

Before using Gero, talk to your doctor if you are taking any of the following medicines:

• warfarin (Coumadin);

• a monoamine oxidase inhibitor such as isocarboxazid (Marplan), phenelzine (Nardil), or tranylcypromine (Parnate);

• mecamylamine (Inversine);

• guanadrel (Hylorel) or guanethidine (Ismelin);

• a medicine to treat high blood pressure; or

• a medicine to improve muscle strength or tone for conditions such as myasthenia gravis.

You may not be able to use Gero, or you may require a dosage adjustment or special monitoring if you are taking any of the medicines listed above.

Drugs other than those listed here may also interact with Gero. Talk to your doctor and pharmacist before taking or using any other prescription or over-the-counter medicines, including vitamins, minerals, and herbal products.

Gero interactions

Anticholinesterases

Concurrent use of Gero and anticholinesterase agents may result in increased systemic toxicity since anticholinesterases inhibit the breakdown of Gero.

Antimyasthenics

Concurrent use of Gero and antimyasthenics may result in loss of control of symptoms of myasthenia gravis due to antagonism of the effects of antimyasthenics on skeletal muscle. Temporary dosage adjustment of antimyasthenics may be required. Also antimyasthenics may have anticholinesterase activity.

CNS depressant medications

Concurrent use of Gero and CNS depressant medications may result in additive depressant effects.

Hyaluronidase

Hyaluronidase may increase the diffusion rate of Gero, resulting in a decreased time of onset, but an increase in systemic toxicity.

Neuromuscular blocking agents (such as suxamethonium chloride)

Concurrent use of Gero and neuromuscular blocking agents may result in prolongation or enhancement of the neuromuscular blockade.

Sulfonamides

Concurrent use of Gero and sulfonamides may result in a reduction of the antibacterial action of the sulfonamide.

Acetazolamide

Concurrent use of acetazolamide and Gero may extend the plasma half-life of Gero.

References

1. FDA/SPL Indexing Data. "4Z8Y51M438: The UNique Ingredient Identifier (UNII) is an alphanumeric substance identifier from the joint FDA/USP Substance Registration System (SRS).". https://www.fda.gov/ForIndustry/Data... (accessed September 17, 2018).
2. MeSH. "Anesthetics, Local". https://www.ncbi.nlm.nih.gov/mesh/68... (accessed September 17, 2018).
3. European Chemicals Agency - ECHA. "Procaine: The information provided here is aggregated from the "Notified classification and labelling" from ECHA's C&L Inventory. ". https://echa.europa.eu/information-o... (accessed September 17, 2018).

Reviews

The results of a survey conducted on ndrugs.com for Gero are given in detail below. The results of the survey conducted are based on the impressions and views of the website users and consumers taking Gero. We implore you to kindly base your medical condition or therapeutic choices on the result or test conducted by a physician or licensed medical practitioners.

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Information checked by Dr. Sachin Kumar, MD Pharmacology