Common side effects include:

local tenderness or pain at the site of injection
skin color change, mild diarrhea
mild nausea
headache
loss of appetite
vaginal discharge and itching
swelling of feet or legs.While cefoxitin has not been associated with alcohol incompatibility like other members of the second generation cephalosporins class, it has been with a higher risk of coagulopathy, a bleeding disorder.This is not a comprehensive list and not intended to provide medical advice. If any of the previous side effects are severe, or if an allergic reaction takes place immediately contact your doctor. Notable drug interactions
Contraindications
A contraindication means that the drug in question should not be used under particular circumstances. For cefoxitin, this includes patients who are hypersensitive to cephalosporin antibiotics.Patients with colitis, kidney disease, or liver disease are also advised not to take cefoxitin. However, some drug databases will considers the diseases means for caution rather than contraindications. Major or Severe
Aside from the above-mentioned contraindications and diseases which require monitoring by a doctor, the live cholera and live typhoid vaccines are known to have a severe interaction with cefoxitin.Individuals on a low sodium diet, undergoing dialysis, or who have experienced seizures, particularly following antibiotic therapy, should also consult their physician prior to taking cefoxitin. Moderate
Only take additional antibiotics, anticoagulants and blood thinners under doctor supervision. Cefoxitin may decrease the effectiveness of hormonal birth control. This increases the risk for pregnancy and a medical consult will help determine whether backup birth control methods should be used. Minor
Minor drug interactions do not usually require a change in treatment.
It may influence pair-bonding in voles. The high-density distributions of vasopressin receptor AVPr1a in prairie vole ventral forebrain regions have been shown to facilitate and coordinate reward circuits during partner preference formation, critical for pair bond formation.A very similar substance, lysine vasopressin (LVP) or lypressin, has the same function in pigs and its synthetic version was used in human AVP deficiency, although it has been largely replaced by desmopressin. Kidney
Vasopressin has three main effects which are:

Increasing the water permeability of distal and cortical collecting tubules (DCT & CCT), as well as outer and inner medullary collecting duct (OMCD & IMCD) in the kidney, thus allowing water reabsorption and excretion of more concentrated urine, i.e., antidiuresis. This occurs through increased transcription and insertion of water channels (Aquaporin-2) into the apical membrane of collecting tubule and collecting duct epithelial cells. Aquaporins allow water to move down their osmotic gradient and out of the nephron, increasing the amount of water re-absorbed from the filtrate (forming urine) back into the bloodstream. This effect is mediated by V2 receptors. Vasopressin also increases the concentration of calcium in the collecting duct cells, by episodic release from intracellular stores. Vasopressin, acting through cAMP, also increases transcription of the aquaporin-2 gene, thus increasing the total number of aquaporin-2 molecules in collecting duct cells.