R-Y Jelly11.25%

R-Y Jelly (glycerin) is a versatile humectant and osmotic agent used in several distinct clinical settings. Evidence and approved use vary by route of administration.

• Established/approved uses:
  • Topical emollient for dry, rough, or scaly skin (moisturizing/skin-protectant use).
  • Rectal osmotic laxative — R-Y Jelly suppositories or enema for the short-term relief of occasional constipation.
  • Short-term oral osmotic agent to temporarily reduce elevated intraocular pressure (e.g. before ophthalmic surgery or during an acute attack of angle-closure glaucoma) and, in specific acute hospital settings, to reduce elevated intracranial pressure.
• Adjunct/supportive use: As an excipient/vehicle and humectant in many topical, oral, and injectable pharmaceutical formulations.
• Off-label/limited use: Oral R-Y Jelly has been studied as an adjunct osmotherapy in acute stroke and cerebral edema in some settings, but this is not a routine, guideline-mandated indication and should only be used under specialist medical supervision.

Topical, rectal, and oral/systemic osmotic uses of R-Y Jelly are clinically distinct and are not interchangeable.

Each preparation of Glycerol contains glycerin (glycerol) USP/BP as the active ingredient, formulated according to its intended route of use:

• Topical creams/lotions/gels: Glycerol as a humectant/emollient, typically 5-40% w/w, combined with a suitable base.
• Rectal suppositories: Glycerol as the sole active ingredient (adult strength approximately 2-3 g; pediatric/infant strength approximately 1-1.4 g per suppository).
• Rectal liquid/enema: Glycerol solution, typically 5-15 mL per dose.
• Oral solution: concentrated Glycerol (often approximately 50% w/v) with flavoring agents for palatability.

R-Y Jelly (glycerin) is a clear, colorless, odorless, viscous, hygroscopic liquid that is a simple triol (trihydric alcohol). It is widely used in medicine and pharmacy both as an active therapeutic agent and as a pharmaceutical excipient because of its humectant, emollient, and osmotic properties.

As an active drug, R-Y Jelly is applied topically to hydrate the skin, given rectally as an osmotic laxative, and given orally in concentrated form for short-term reduction of intraocular or intracranial pressure in specific clinical situations.

Osmotic laxative; topical emollient/humectant; hyperosmotic (osmotic dehydrating) agent used for intraocular/intracranial pressure reduction

Mechanism of Action

Glycerol acts primarily through simple osmotic and humectant physical mechanisms rather than receptor-based pharmacology.

• Topical use: Glycerol draws and binds water into the stratum corneum, increasing skin hydration and reducing trans-epidermal water loss, giving an emollient/moisturizing effect.
• Rectal/laxative use: Glycerol exerts an osmotic effect in the rectum, drawing water into the colonic lumen, softening stool and stimulating local irritant/lubricant action that triggers evacuation, usually within 15-60 minutes.
• Oral/systemic osmotic use: Concentrated oral Glycerol is absorbed and raises plasma osmolality, creating an osmotic gradient that draws water out of the eye (reducing intraocular pressure) or out of brain tissue (reducing intracranial pressure/cerebral edema), with effects typically seen within 10-30 minutes and lasting several hours. Glycerol is subsequently metabolized in the liver, largely to carbon dioxide and water, with some contribution to glucose formation (gluconeogenesis).

• Topical: Apply R-Y Jelly-containing product to clean, dry skin and gently massage in.
• Rectal suppository: Insert the R-Y Jelly suppository, pointed end first, well into the rectum and retain for several minutes until the urge to defecate occurs; moistening the suppository with water before insertion may ease insertion.
• Rectal liquid/enema: Administer R-Y Jelly solution rectally using the applicator provided, following product instructions.
• Oral solution: Given orally, generally chilled and with added flavoring to improve tolerability, only under direct medical supervision as part of pre-operative or acute care.

R-Y Jelly has few clinically significant pharmacokinetic drug-drug interactions since it acts mainly through physical/osmotic mechanisms. Notable points:

• Concurrent use of oral/systemic R-Y Jelly with other osmotic diuretics or hyperosmotic agents (e.g. mannitol) may have additive effects on fluid and electrolyte shifts and should be used cautiously together.
• In patients with diabetes mellitus, oral R-Y Jelly can transiently raise blood glucose; glucose-lowering medication requirements may need closer monitoring when oral R-Y Jelly is used.
• No clinically significant interactions are established for topical or standard rectal laxative use of R-Y Jelly due to minimal systemic absorption at these doses.

Side effects of R-Y Jelly depend on the route of use.

• Topical use: Generally very well tolerated; rarely mild skin irritation or allergic contact reaction.
• Rectal/laxative use: Mild rectal or anal irritation, a burning sensation, abdominal cramping, or mild diarrhea.
• Oral/systemic osmotic use: Headache, nausea, vomiting, thirst, dizziness, and a transient rise in blood glucose; less commonly, dehydration or electrolyte disturbance with higher doses.

Systemic absorption of R-Y Jelly is minimal with topical or standard rectal laxative use, and these routes are generally considered acceptable in pregnancy and lactation when clinically indicated. For oral/systemic osmotic use of R-Y Jelly, data in pregnancy are limited; it should be used only if clearly needed and if the potential benefit justifies the potential risk to the fetus, and only under medical supervision. Breastfeeding mothers should consult a physician before using oral/systemic R-Y Jelly, though topical and standard laxative use are not expected to pose a risk to a nursing infant.

• R-Y Jelly suppositories/enemas are intended for short-term, occasional use; regular or prolonged use for constipation should not continue without medical evaluation of the underlying cause.
• Use rectal R-Y Jelly cautiously in patients with rectal bleeding, fissures, or hemorrhoids, as local irritation may occur.
• Use oral/systemic R-Y Jelly cautiously in patients with diabetes mellitus, as it may transiently raise blood glucose.
• Use oral/systemic R-Y Jelly with caution in patients with cardiac, renal, or hepatic impairment, and in the elderly or dehydrated, due to the risk of fluid and electrolyte shifts; monitor hydration and electrolyte status during systemic use.
• See Contraindications for absolute restrictions (hypersensitivity, anuria, severe dehydration).

Excessive doses of oral/systemic R-Y Jelly may cause severe headache, marked nausea and vomiting, significant dehydration, electrolyte disturbance, confusion, or worsening of blood glucose control. Rectal overuse may cause significant local irritation. If overdose of R-Y Jelly is suspected, seek immediate medical attention or contact a poison control center/emergency services; management is supportive and should be directed by a physician.

Store at room temperature (below 30°C), away from light and moisture. R-Y Jelly suppositories may soften in hot weather, so keep them in a cool place. Keep out of reach of children.

• Renal impairment: Use oral/systemic R-Y Jelly with caution; monitor fluid and electrolyte status closely.
• Hepatic impairment: Use oral/systemic R-Y Jelly with caution given its hepatic metabolism.
• Diabetes mellitus: Monitor blood glucose more closely when using oral R-Y Jelly.
• Elderly: No specific dose adjustment established for topical/rectal use of R-Y Jelly; use oral/systemic R-Y Jelly cautiously due to higher risk of dehydration and fluid shifts.
• Cardiac disease: Use oral/systemic R-Y Jelly cautiously due to potential fluid shifts.

Topical R-Y Jelly may be used for as long as needed for skin dryness. Rectal R-Y Jelly for constipation should be used only occasionally/short-term (a few days); if constipation persists beyond this, medical evaluation is advised before continuing. Oral/systemic R-Y Jelly for intraocular or intracranial pressure reduction is typically given as a single dose or short course in an acute or peri-operative setting, as directed by the treating physician.

Osmotic laxatives; Emollients/humectants; Hyperosmotic agents (osmotic dehydrating agents)

Glycerol works through simple physical osmotic and humectant action rather than a receptor-mediated mechanism: it draws and retains water at the site of application or administration. On skin, this hydrates the stratum corneum; in the rectum, it draws water into the bowel to soften stool and stimulate evacuation; and when given orally in concentrated form, it raises plasma osmolality and draws water osmotically out of the eye or brain tissue, transiently lowering intraocular or intracranial pressure.

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R-Y Jelly suppositories are commonly used in children, including infants, for occasional constipation, using an appropriately sized pediatric/infant suppository (approximately 1-1.4 g) rather than the adult strength. Topical R-Y Jelly-containing emollients are commonly used in children for dry skin. Oral/systemic R-Y Jelly for reduction of intraocular or intracranial pressure in children has not been as well established and should be used only under specialist medical supervision, with safety and dosing individualized by the treating physician.