How Long After The Expiration Date Can I Take Chlorpheniramine Maleate 4mg?

Updated

How long after the expiration date can I take Chlorpheniramine Melate 4mg? I have a bottle that expired 11/2013.

Thank you.

4 Replies

Earliest Newest Votes
1

Hello, Rochelle! How are you?

Medications tend to lose efficacy over time, so it is most likely best to just dispose of it and purchase a new supply. This is available over the counter and rather inexpensive.

Side effects may include nausea, dizziness, drowsiness and dry mouth.

Was this helpful? 2
2

I did purchase a new bottle. This is for my 14 - 15lb dog - do you know what the correct dosage would be for her? Previously I had a toy poodle 7 - 8 lbs & the vet prescribed 1/4 tab twice daily for allergies.

Thank you for your help!

Was this helpful? 0
3

Re: Verwon (# 1) Expand Referenced Message

What if its 2 yrs old?

Was this helpful? 0
4

Re: Marilyn (# 3) Expand Referenced Message

It depends on how you've been storing it. You may find this interesting. The military ordered some tests in an attempt to reduce the amount of drugs they had to dispose of. Here are some of the findings (article link at the bottom)

Drug expiry debate: the myth and the reality



Most of drug expiration dates information is from the study conducted by the Food and Drug Administration at the request of the military. With a large and expensive stockpile of drugs, the military faced tossing out and replacing its drugs every few years. What they found from the study is 90% of more than 100 drugs, both prescription and over-the-counter, were perfectly good to use even 15 years after the expiration date.

The expiration date is the final day that the manufacturer guarantees the full potency and safety of a medication.

Proper storage of medications may help to extend their potency. The bathroom and medicine cabinet are not ideal places to store medications due to heat and humidity. Similarly, medications should not be left in a hot car. Medications remain most stable in dry, cool spaces away from light. Keep the prescription bottle caps tightly closed and always keep medications out of reach of children and pets.

Excluding nitroglycerin, insulin, and liquid antibiotics, most medications are as long-lasting as the ones tested by the military.

Medication's potency gradually decreases starting from the moment of its manufacture. This process is not in any way spontaneous after the expiry date.

Expired drugs have not necessarily lost their potency and efficacy. The expiration date is only an assurance that the labeled potency will last at least until that date. Ongoing research shows that stored under optimal conditions, many drugs retain 90% of their potency for at least five years after the labeled expiration date, and sometimes longer. Even 10 years after the expiration date many pharmaceuticals retain a significant amount of their original potency.

Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040264/

Was this helpful? 3

More Discussions:

Norcos how long after expiration can I take take them

I am in severe pain I'm out of my medicine I take Norcos I found two bottles of Norcos 1 with the expiration of Augu...

8 REPLIES
can i take this after the expiration date

i have hyospasmol tablets exp date march 2014 can i still use it ## Can my child 8 yrs old take hyospasmol liquid it exp...

1 REPLY
can i take lisinopril after the expiration date

My lisinopril (90 day supply, just opened) will expire in 1.5 months. Can I finish it off or do I have to destroy it at ...

6 REPLIES
how long is the medication good after date of expiration

Diovan only 2 months after expiration date. Is it safe to take? Next appointment with doctor is for next month. Please l...

1 REPLY
how long will shark cartilage last after the expiration date

Found 4 new bottles of shark cartilage and 7 new bottles of Red Yeast Rice in the back of my closet. All show an expirat...

3 REPLIES
can i take iophen c nr after expiration date

The bottle expired 9/11/2013 - is it still effective for nightime cough relief. ## Hello, Marlene! How are you? Accordin...

2 REPLIES
How long is Nitrofurantoin good after expiration date

I have Nitrofurantoin that expired in 2015 - Can I still take them? I suffered from UTI's on a regular basis at that...

1 REPLY
How Long Is Dicyclomine Good For After Expiration Date

How long will Dicyclomine HCL remain usable past the expiration date? ## According to Solco Healthcare, the shelf-life o...

14 REPLIES
How Long is Hydroxyzine Good for After Expiration Date

I took Hydroxyzine that technically expired in 2009. It's 2014 now. What's gonna happen? ## Hello, Ash! How are ...

1 REPLY
How Long Will B12 Remain Usable Past The Expiration Date

How long will B12 remain usable past the expiration date? ## When it comes to vitamins I think it is best to not take an...

4 REPLIES