Indications
Carbomer is a group of large, water absorbing polymers (long chain molecules made from acrylic acid). In medicines and cosmetics it is mostly an inactive ingredient used to turn liquids into smooth gels and creams. As an active ingredient, carbomer eye gels are used as artificial tears to relieve dry, gritty and irritated eyes (dry eye disease).
How It Works
When carbomer is mixed with water and neutralised, it swells and forms a clear gel. In skin products this gives the right thickness and helps the active medicine spread evenly. In the eye, the gel clings to the surface longer than ordinary drops, forming a moist protective layer that reduces friction and dryness.
Dosage and Administration
As an ingredient, it has no dose of its own; follow the directions of the product it is in. For carbomer eye gel, adults usually apply 1 drop into the affected eye 3 to 4 times a day or as needed, as directed on the label or by your doctor. Wash hands first, do not let the tip touch the eye, and wait about 15 minutes before putting in contact lenses or other eye drops.
Interactions
No important interactions with medicines taken by mouth are known. If you use other eye drops, put the carbomer gel in last and leave about 5 minutes between products.
Contraindications
- Allergy to carbomer or to any other ingredient of the product, including preservatives such as Cetrimide or Benzalkonium chloride.
Side Effects
Carbomer itself is generally well tolerated. Eye gels may cause brief blurred vision, a sticky feeling on the eyelids, or mild stinging. Skin products may rarely cause irritation or rash, usually due to other ingredients.
Get urgent medical help if you notice severe eye pain, sudden loss of vision, or signs of a serious allergy such as swelling of the face, lips or throat or difficulty breathing.
Pregnancy and Lactation
Carbomer is not absorbed into the body in meaningful amounts and is considered safe in pregnancy and breastfeeding. Check the other ingredients of the product and ask a doctor if unsure.
Precautions and Warnings
Eye gel can blur vision for a few minutes; do not drive or use machines until vision is clear. See a doctor if eye symptoms worsen or last more than 72 hours, or if there is pain, redness or discharge. Do not share eye products, and discard opened eye gel after the time stated on the pack.
Overdose
Overdose is not expected. Using too much eye gel may only cause more blurring. If a product is swallowed, the carbomer is not absorbed; seek advice based on the other ingredients.
Therapeutic Class
Gelling agent (excipient); ocular lubricant (artificial tears)
Storage
Store below 30°C in a dry place, away from light and out of the reach of children. Keep the container tightly closed.
Prepared by the Oshud Alo team from standard drug references. For information only; always follow your doctor's advice.