 30-50% of adults will not experience acute Hepatitis B symptoms, and those that do experience lethargy, nausea, upper abdominal pain, muscle aches, or a darkening of urine will need to connect these symptoms to a possible infection to seek care and limit spreading of the virus.Of all the ways to ingest drugs, injection carries the most risks by far as it bypasses the body's natural filtering mechanisms against viruses, bacteria, and foreign objects.There will always be much less risk of overdose, disease, infections, and health problems with alternatives to injecting, such as smoking, insufflation (snorting or nasal ingestion), or swallowing.