Some of the top complaints for Andro400 are that it relies solely on its active ingredient, eurycoma longifolia, and that it doesn't treat severe sexual conditions, notes Consumer Health Digest. Another complaint is that the actual science behind the supplement isn't listed on the bottle.
Andro400 claims to be the best hormone-boosting supplement on the market, but there is no proof to back up this claim, according to Consumer Health Digest. Some of the side effects of Andro400 include redness and flushing of the face when first starting to take it, notes HealthResearchFunding.org. Other side effects include mild nausea, which is avoided by taking the supplement with food, and insomnia, which is a condition that needs to be addressed by a doctor.