The term “C4 tablets” most commonly refers to tablets with the imprint “C4,” which identify them as cyproheptadine hydrochloride 4 mg. Cyproheptadine is an antihistamine used to treat allergic reactions, stimulate appetite, and sometimes for other indications[2].
Common side effects of cyproheptadine tablets include:
- Drowsiness or sleepiness[1]
- Dizziness and loss of coordination[3]
- Dry mouth, nose, or throat[1]
- Blurred vision[5]
- Increased appetite and weight gain[7]
- Stomach upset, nausea, or vomiting[5]
- Constipation or diarrhea[5]
- Headache[5]
Serious but less common side effects may include:
- Severe allergic reactions: skin rash, swelling of the face/lips/tongue, difficulty breathing, hives[1][5]
- Seizures or convulsions: muscle twitching, stiffening, unconsciousness[1][5]
- Urinary retention: difficulty or inability to urinate[1][5]
- Confusion or agitation, especially in older adults[3][5]
- Yellowing of the eyes or skin (jaundice)[5]
- Irregular or rapid heartbeat, chest pain[5]
- Unusual bleeding or bruising[5]
- Unusual tiredness or weakness[5]
Cautions:
- Cyproheptadine can cause significant drowsiness, so avoid driving or operating heavy machinery until its effects are known[1][3].
- Older adults may experience more pronounced side effects, such as confusion and drowsiness[3].
- If you experience symptoms of a serious allergic reaction, seizures, or are unable to urinate, seek medical attention immediately[1][5].
This list does not describe all possible side effects. Notify your healthcare provider if you experience any unexpected effects while taking C4 (cyproheptadine) tablets.
References
- [1] Cyproheptadine (Periactin) – Uses, Side Effects, and More – WebMD
- [2] C4 Pill White Round 7mm – Pill Identifier
- [3] Cyproheptadine: Uses, Side Effects, FAQs & More – GoodRx
- [5] Cyproheptadine (Periactin): Uses & Side Effects – Cleveland Clinic
- [7] Label: CYPROHEPTADINE HYDROCHLORIDE tablet – DailyMed
Leave a Reply