evidence: Activated charcoal is most helpful in cases of drug overdoses and poisonings when administered immediately. According to data from 48 comparisons involving 26 drugs, volunteers who took at least 50 grams (g) of activated charcoal 30 minutes after ingesting poison reduced absorption by an average of 47 percent, per a 2005 position paper. Yet most of the comparisons involved small sample sizes, usually between 6 and 10 volunteers. (9) [...] Though activated charcoal may be an effective detoxifier in some cases — for acute poisonings in particular — the jury is still out as to whether it can help with diarrhea, gas, kidney problems, cosmetic issues, and many other touted benefits. Don’t try to treat poisonings or overdoses with activated charcoal on your own, either. (14,15,21,24,25) [...] Activated charcoal is available in pill and powder form at many online retailers, including Google Express and Amazon, and at supplement stores such as GNC. As with any supplement, follow the dosage and instructions on the label, and only buy from reputable brands that are third-party tested. Again, your healthcare team can help you identify a legitimate product that’s suited to your individual health.