Bioglan High Strength Magnesium Bedtime 4-in-1, 120 Tablets (375mg)

Bioglan High Strength Magnesium Bedtime 4-in-1 (120 vegan tablets) is down to £9.60 at Amazon. It has typically been selling for around £15.40 over recent months, so this works out at roughly 38% below its usual price.
Its currently ranked 9,151 in Health & Personal Care on Amazon and rated 4.5 out of 5 from 339 customer ratings.
Key features:
One daily tablet provides 375mg of elemental magnesium (100% NRV)
Combines four forms: magnesium oxide, phosphate, bisglycinate and citrate
Magnesium contributes to normal muscle function and normal protein synthesis
Contributes to a reduction in tiredness and fatigue
120 tablets for a four-month supply, suitable for vegetarians and vegans