are there preservatives in alaway eye drops
All eye drops in multi-use packaging have preservatives to keep the product safe for everyday use.. Polyquad-manufacturer's description: According to investigators in a clinical study, '...there is potential for certain biguanide-containing MPS systems to invoke significant corneal staining.ll eye drops in multi-use packaging have preservatives to keep the product safe for everyday use.. Polyquad-manufacturer's description: According to investigators in a clinical study, '...there is potential for certain biguanide-containing MPS systems to invoke significant corneal staining.