Immunosuppressants (methotrexate, biologics) and blood

No, this one is a firm stop, for your safety or the patient’s. Medicines that suppress the immune system, methotrexate, azathioprine, biologics, close blood donation. ## The short answer These drugs act on immune cells present in donated blood, and your own stability on them matters. If you finished such treatment years ago for a short course, ask the centre, intervals apply. ## At the screening desk Tell the staff: Medicine, dose, and the condition being treated. That conversation is confidential and takes a minute, it exists so the medical officer can clear you safely on the day. Everyone meets the same basics: age 18,65, weight 50 kg+, haemoglobin on target, feeling well today. Men donate every 3 months, women every 4, the rest rules, simply. Not sure about your case? Try the Can I donate? checker or read who can donate and the deferral list in plain words. Still weighing it? Is blood donation safe? and the honest side-effects list are straight answers, not brochure talk. ## The one line that matters The medical officer at the centre makes the final call on the day, with your name, your file and your actual reading in front of them. Use this page to walk in informed, not to overrule anyone.