Giant Bladder Kelp (Macrocystis pyrifera) is a brown seaweed extract, which is valued for its iodine content (particularly in hypothyroidism) and to protect against cardiometabolic and inflammatory risk factors associated with conditions such as obesity, type 2 diabetes, metabolic syndrome, cardiovascular disease, inflammatory bowel disease, and certain cancers. Testing of Giant Bladder Kelp indicates that iodine is present at such potent levels that a very small, highly cost-effective dosage range can be used. Due to its constituent profile, Giant Bladder Kelp may also be an effective gut microbiota modulator and may aid in the management of intestinal dysbiosis. Additionally, Giant Bladder Kelp may be indicated to reduce gastrointestinal inflammation and to promote microbial balance in inflammatory gastrointestinal complaints due to its complementary demulcent, anti-inflammatory, nutritive, and selective antimicrobial activity. OptimalRx’s Giant Bladder Kelp is sustainably harvested, sourced from pristine southern waters. As many kelp beds around the world have been depleted due to overharvesting, it is important to note that OptimalRx Giant Bladder Kelp is harvested north of the Otago Harbour of Dunedin, New Zealand, from kelp rafts that have naturally detached from the seabed by wave action. Furthermore, due to the origin of Giant Bladder Kelp, potential contamination issues are further minimised.